US5829977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-piece dental abutment
Assignee: Biomet 3I LLC
•
Filing: 1996-10-15
•
Granted: 1998-11-03
•
Expires: 2016-10-15
Abstract
Abstract A two-piece abutment system is disclosed. The first part includes a tapering inner surface which is part of a bore extending entirely through the first part. The first part includes a socket for mating with a boss or post on a dental implant. The elongated second part includes a threaded stem for engaging a threaded bore with a dental implant and a post which extends above the first part. The second part extends through the bore of the first part and is screwed into the implant. As the second part is screwed into the implant, a tapering external surface on the post of the second part frictionally locks with the tapering inner surface of the first part.
Inventors
- 👤 Dan Paul Rogers
- 👤 Daniel Y. Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:47
CPC Classifications
B; B21; B21J; B21J5/00; B21J5/06; B21J5/12; A; A61; A61C; A61C8/00; A61C8/0048; A61C8/005; A61C8/0066; A61C8/0069; A61C8/0059; A61C8/006; A61C8/0071
Claims Analysis
Total Claims: 63
Claim 1
Independent Claim
228 words
The combination of a dental implant and an abutment, said implant for integrating with living jawbone and including a threaded bore and a boss protruding away from an upper portion thereof for engaging said abutment, said abutment comprising: a first part having an upper end, a lower end, a central axis, and a bore extending therethrough along said central axis, said first part having adjacent to said lower end a socket for receiving said boss of said implant, a portion of said bore being defined by a surface that tapers inwardly toward said central axis in a direction toward said lower end at a predetermined angle, said first part including an annular shoulder positioned below said upper end for supporting a dental prosthesis, said first part diminishing in cross-section from said shoulder to said upper end; and an elongated second part for extending through said bore of said first part, said second part including a threaded portion for engaging said threaded bore of said implant and a post protruding substantially above said upper end of said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle for engaging said tapered surface of said first part, said post engaging the wall defining said bore immediately adjacent to said upper end of said first part.
Claim 2
Dependent Claim
228 words
The combination of a dental implant and an abutment, said implant for integrating with living jawbone and including a threaded bore and a boss protruding away from an upper portion thereof for engaging said abutment, said abutment comprising: a first part having an upper end, a lower end, a central axis, and a bore extending therethrough along said central axis, said first part having adjacent to said lower end a socket for receiving said boss of said implant, a portion of said bore being defined by a surface that tapers inwardly toward said central axis in a direction toward said lower end at a predetermined angle, said first part including an annular shoulder positioned below said upper end for supporting a dental prosthesis, said first part diminishing in cross-section from said shoulder to said upper end; and an elongated second part for extending through said bore of said first part, said second part including a threaded portion for engaging said threaded bore of said implant and a post protruding substantially above said upper end of said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle for engaging said tapered surface of said first part, said post engaging the wall defining said bore immediately adjacent to said upper end of said first part.
Claim 3
Dependent Claim
56 words
The combination of claim 1, wherein said shoulder separates first and second regions of said first part, said first region being adjacent to said implant and flaring outwardly from said central axis in a direction away from said lower end, said second region flaring inwardly toward said central axis in a direction toward said upper end.
Claim 4
Dependent Claim
30 words
The combination of claim 1, wherein said predetermined angle is in the range from about 5° to about 20° for providing a locking taper between said first and second parts.
Claim 5
Dependent Claim
24 words
The combination of claim 1, wherein said post includes a threaded hole for receiving a screw to attach a component onto said second part.
Claim 6
Dependent Claim
28 words
The combination of claim 4, further including an impression coping fitting over said post and being attached thereon by a screw engaging said threaded hole in said post.
Claim 7
Dependent Claim
28 words
The combination of claim 4, further including a healing cap fitting over said post and being attached thereon by a screw engaging said threaded hole in said post.
Claim 8
Dependent Claim
34 words
The combination of claim 4, further including a cylinder fitting over said post and being attached thereon by a screw engaging said threaded hole in said post, said cylinder for holding a permanent denition.
Claim 9
Dependent Claim
21 words
The combination of claim 1, wherein said post includes a flat surface for non-rotationally engaging components attached on said second part.
Claim 10
Dependent Claim
23 words
The combination of claim 1, wherein said post includes a recessed surface to be engaged by a tool for rotating said second part.
Claim 11
Dependent Claim
42 words
The combination of claim 1, wherein said socket and said boss have a non-round shape to resist the rotation of said abutment around said implant, said socket further including anti-rotational structure to resist the turning of said first part on said implant.
Claim 12
Dependent Claim
13 words
The combination of claim 10, wherein said anti-rotational structure includes a shim-like structure.
Claim 13
Dependent Claim
13 words
The combination of claim 10, wherein said anti-rotational structure includes a block-like structure.
Claim 14
Dependent Claim
14 words
The combination of claim 1, further including an artificial tooth attached on said post.
Claim 15
Dependent Claim
14 words
The combination of claim 1, wherein said socket is a portion of said bore.
Claim 16
Dependent Claim
26 words
The combination of claim 1, wherein said first part has an exterior surface for engaging soft tissue overlying said jawbone with a portion thereof being non-round.
Claim 17
Dependent Claim
26 words
The combination of claim 1, wherein said post protrudes above said first part by a distance that is larger than the height of said first part.
Claim 18
Dependent Claim
38 words
The combination of claim 1, wherein said post protrudes above said first part by a distance that is at least as large as approximately the length of said second part below said upper end of said first part.
Claim 19
Dependent Claim
18 words
The combination of claim 1, wherein said threaded portion is a threaded stem integral with said second part.
Claim 20
Dependent Claim
239 words
The combination of a dental implant and an abutment, said implant for integrating with living jawbone and including a boss protruding away from an upper portion of said implant for engaging said abutment and a threaded bore, said abutment comprising: a first part having an upper end, a lower end, a central axis, and a bore extending therethrough along said central axis, said bore including adjacent to said lower end a socket including anti-rotational structure for receiving said boss of said implant, a portion of said bore being defined by a surface that tapers inwardly toward said central axis in a direction toward said lower end at a predetermined angle being between about 5° and 20°, said first part having a shoulder facing away from said implant for engaging another component; and an elongated second part for extending through said bore of said first part, said second part including a threaded stem for engaging said threaded bore of said implant and a post protruding above said upper end of said first part, said second part including an outer surface with a tapered portion tapering at an angle substantially the same as said predetermined angle for engaging said surface of said first part and providing a locking engagement between said first and second parts, said second part having a flat surface for engaging said another component and a threaded hole for receiving a screw for attaching said another component thereon.
Claim 21
Dependent Claim
239 words
The combination of a dental implant and an abutment, said implant for integrating with living jawbone and including a boss protruding away from an upper portion of said implant for engaging said abutment and a threaded bore, said abutment comprising: a first part having an upper end, a lower end, a central axis, and a bore extending therethrough along said central axis, said bore including adjacent to said lower end a socket including anti-rotational structure for receiving said boss of said implant, a portion of said bore being defined by a surface that tapers inwardly toward said central axis in a direction toward said lower end at a predetermined angle being between about 5° and 20°, said first part having a shoulder facing away from said implant for engaging another component; and an elongated second part for extending through said bore of said first part, said second part including a threaded stem for engaging said threaded bore of said implant and a post protruding above said upper end of said first part, said second part including an outer surface with a tapered portion tapering at an angle substantially the same as said predetermined angle for engaging said surface of said first part and providing a locking engagement between said first and second parts, said second part having a flat surface for engaging said another component and a threaded hole for receiving a screw for attaching said another component thereon.
Claim 22
Dependent Claim
35 words
The combination of claim 19, further including an impression coping fitting over said post and being attached thereon by a screw engaging said threaded hole in said post, said impression coping being said another component.
Claim 23
Dependent Claim
35 words
The combination of claim 19, further including a healing cap fitting over said post and being attached thereon by a screw engaging said threaded hole in said post, said healing cap being said another component.
Claim 24
Dependent Claim
40 words
The combination of claim 19, further including a cylinder fitting over said post and being attached thereon by a screw engaging said threaded hole in said post, said cylinder for holding a permanent denition, said cylinder being said another component.
Claim 25
Dependent Claim
13 words
The combination of claim 19,further including an artificial tooth attached on said post.
Claim 26
Dependent Claim
26 words
The combination of claim 19, wherein said first part has an exterior surface for engaging soft tissue overlying said jawbone with a portion thereof being non-round.
Claim 27
Dependent Claim
191 words
An abutment for attaching to a dental implant embedded in living jawbone and having a fitting at its upper end, said abutment comprising: a first part having an upper end, a lower end, a central axis, and a bore extending therethrough along said central axis, said first part having adjacent to said lower end a interlocking fitting for mating with said fitting of said implant, said bore being defined in part by a surface that tapers inwardly toward said central axis in the direction of said lower end at a predetermined angle; and an elongated second part for extending through said bore of said first part, said second part including a threaded stem for engaging said threaded bore of said implant and a post protruding substantially above said upper end of said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle, said tapered portion lockingly engaging said surface of said first part to hold said first and second part together, said post further having a non-round cross-sectional shape for non-rotationally mating with a dental prosthesis.
Claim 28
Dependent Claim
191 words
An abutment for attaching to a dental implant embedded in living jawbone and having a fitting at its upper end, said abutment comprising: a first part having an upper end, a lower end, a central axis, and a bore extending therethrough along said central axis, said first part having adjacent to said lower end a interlocking fitting for mating with said fitting of said implant, said bore being defined in part by a surface that tapers inwardly toward said central axis in the direction of said lower end at a predetermined angle; and an elongated second part for extending through said bore of said first part, said second part including a threaded stem for engaging said threaded bore of said implant and a post protruding substantially above said upper end of said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle, said tapered portion lockingly engaging said surface of said first part to hold said first and second part together, said post further having a non-round cross-sectional shape for non-rotationally mating with a dental prosthesis.
Claim 29
Dependent Claim
24 words
The abutment of claim 25, wherein said post includes a threaded hole for receiving a screw to attach a component onto said second part.
Claim 30
Dependent Claim
21 words
The abutment of claim 25, wherein said post includes a flat surface for non-rotationally engaging components attached on said second part.
Claim 31
Dependent Claim
22 words
The abutment of claim 25, wherein said socket includes anti-rotational structure to resist the turning of said first part on said implant.
Claim 32
Dependent Claim
26 words
The abutment of claim 25, wherein said first part has an exterior surface for engaging soft tissue overlying said jawbone with a portion thereof being non-round.
Claim 33
Dependent Claim
18 words
The abutment of claim 25, wherein said threaded portion is a threaded stem integeral with said second part.
Claim 34
Dependent Claim
208 words
An abutment for holding a dental prosthesis that is to be attached to a dental implant embedded in living jawbone, said abutment comprising: a first part having a bore extending therethrough along said central axis, said first part having means for non-rotationally mating with said implant and an internal surface that tapers inwardly toward said central axis, said first part including an annular shoulder positioned below said upper end for supporting a dental prosthesis, said first part diminishing in cross-section from said shoulder to said upper end; and an elongated second part for extending through said bore of said first part, said second part including a threaded stem for threadably engaging said threaded bore of said implant and a post protruding above said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle, said tapered portion engaging said internal surface of said first part in response to said threaded stem being threadably engaged in said threaded bore of said implant, said post engaging the wall defining said bore immediately adjacent to said upper end of said first part, said post further having a non-round cross-section shape for non-rotationally mating with said dental prosthesis.
Claim 35
Dependent Claim
208 words
An abutment for holding a dental prosthesis that is to be attached to a dental implant embedded in living jawbone, said abutment comprising: a first part having a bore extending therethrough along said central axis, said first part having means for non-rotationally mating with said implant and an internal surface that tapers inwardly toward said central axis, said first part including an annular shoulder positioned below said upper end for supporting a dental prosthesis, said first part diminishing in cross-section from said shoulder to said upper end; and an elongated second part for extending through said bore of said first part, said second part including a threaded stem for threadably engaging said threaded bore of said implant and a post protruding above said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle, said tapered portion engaging said internal surface of said first part in response to said threaded stem being threadably engaged in said threaded bore of said implant, said post engaging the wall defining said bore immediately adjacent to said upper end of said first part, said post further having a non-round cross-section shape for non-rotationally mating with said dental prosthesis.
Claim 36
Dependent Claim
24 words
The abutment of claim 31, wherein said post includes a threaded hole for receiving a screw to attach a component onto said second part.
Claim 37
Dependent Claim
27 words
The abutment of claim 31, wherein non-round cross section of said post is defined by a flat surface for non-rotationally engaging components attached on said second part.
Claim 38
Dependent Claim
11 words
The abutment of claim 31,wherein said mating means is a socket.
Claim 39
Dependent Claim
22 words
The abutment of claim 34, said mating means includes anti-rotational structure to resist the turning of said first part on said implant.
Claim 40
Dependent Claim
26 words
The abutment of claim 31, wherein said first part has an exterior surface for engaging soft tissue overlying said jawbone with a portion thereof being non-round.
Claim 41
Dependent Claim
34 words
The abutment of claim 31, wherein said tapered portion of said bore and said tapered outer surface are angled between 5° to 20° to provide a locking engagement between said first and second parts.
Claim 42
Dependent Claim
20 words
The abutment of claim 31, wherein said shoulder is in a plane that is generally perpendicular to said central axis.
Claim 43
Dependent Claim
221 words
An abutment for holding a dental prosthesis that is to be attached to a dental implant embedded in living jawbone, said abutment comprising: a first part having a bore extending therethrough along said central axis, said first part having means for non-rotationally mating with said implant and an internal surface that tapers inwardly toward said central axis, said first part further having an annular shoulder facing away from dental implant for engaging a dental prosthesis, at least a portion of said shoulder being below said upper end such that said first part is capable of providing lateral support to said dental prosthesis, said first part diminishing in cross-section from said shoulder to said upper end; and an elongated second part for extending through said bore of said first part, said second part including a threaded stem for threadably engaging said threaded bore of said implant and a post protruding above said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle, said tapered portion engaging said internal surface of said first part in response to said threaded stem being threadably engaged in said threaded bore of said implant, said post engaging the wall defining said bore immediately adjacent to said upper end of said first part.
Claim 44
Dependent Claim
221 words
An abutment for holding a dental prosthesis that is to be attached to a dental implant embedded in living jawbone, said abutment comprising: a first part having a bore extending therethrough along said central axis, said first part having means for non-rotationally mating with said implant and an internal surface that tapers inwardly toward said central axis, said first part further having an annular shoulder facing away from dental implant for engaging a dental prosthesis, at least a portion of said shoulder being below said upper end such that said first part is capable of providing lateral support to said dental prosthesis, said first part diminishing in cross-section from said shoulder to said upper end; and an elongated second part for extending through said bore of said first part, said second part including a threaded stem for threadably engaging said threaded bore of said implant and a post protruding above said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle, said tapered portion engaging said internal surface of said first part in response to said threaded stem being threadably engaged in said threaded bore of said implant, said post engaging the wall defining said bore immediately adjacent to said upper end of said first part.
Claim 45
Dependent Claim
18 words
The abutment of claim 39, further including an artificial tooth attached on said post and on said shoulder.
Claim 46
Dependent Claim
12 words
The abutment of claim 39, wherein said shoulder has an annular shape.
Claim 47
Dependent Claim
12 words
The abutment of claim 39, wherein said shoulder is in one plane.
Claim 48
Dependent Claim
208 words
A kit of dental components comprising: an abutment including a first part having a bore extending therethrough along said central axis, said first part having means for non-rotationally mating with said implant and an internal surface that tapers inwardly toward said central axis, said abutment further including an elongated second part for extending through said bore of said first part, said first part including a shoulder positioned below said upper end for supporting a dental prosthesis, said second part including a threaded stem for threadably engaging a threaded bore of a dental implant and a post protruding above said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle, said tapered portion frictionally engaging said internal surface of said first part in response to said threaded stem being threadably engaged in said threaded bore of said implant, said post portion engaging the wall defining said bore immediately adjacent to said upper end of said first part; a healing cap for placement over said post including means for attaching said healing cap to said post; and an impression coping for placement over said post including means for attaching said impression coping to said post.
Claim 49
Dependent Claim
208 words
A kit of dental components comprising: an abutment including a first part having a bore extending therethrough along said central axis, said first part having means for non-rotationally mating with said implant and an internal surface that tapers inwardly toward said central axis, said abutment further including an elongated second part for extending through said bore of said first part, said first part including a shoulder positioned below said upper end for supporting a dental prosthesis, said second part including a threaded stem for threadably engaging a threaded bore of a dental implant and a post protruding above said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle, said tapered portion frictionally engaging said internal surface of said first part in response to said threaded stem being threadably engaged in said threaded bore of said implant, said post portion engaging the wall defining said bore immediately adjacent to said upper end of said first part; a healing cap for placement over said post including means for attaching said healing cap to said post; and an impression coping for placement over said post including means for attaching said impression coping to said post.
Claim 50
Dependent Claim
28 words
The kit of claim 43, wherein said second part includes a threaded hole and said means for attaching said healing cap includes a screw engaging said threaded hole.
Claim 51
Dependent Claim
28 words
The kit of claim 43, wherein said second part includes a threaded hole and said means for attaching said impression coping includes a screw engaging said threaded hole.
Claim 52
Dependent Claim
18 words
The kit of claim 45, wherein said screw is elongated and said impression coping is a pick-up coping.
Claim 53
Dependent Claim
20 words
The kit of claim 45, wherein said screw is a wide-head screw and said impression coping is a transfer coping.
Claim 54
Dependent Claim
16 words
The kit of claim 43, wherein said shoulder on said abutment further supports said impression coping.
Claim 55
Dependent Claim
16 words
The kit of claim 43, wherein said shoulder on said abutment further supports said healing cap.
Claim 56
Dependent Claim
177 words
An abutment for attaching to a dental implant embedded in living jawbone and having a fitting at its upper end, said abutment comprising: a tubular first part having an upper end, a lower end, a central axis, and a bore extending therethrough along said central axis, said tubular first part having adjacent to said lower end an interlocking fitting for mating with said fitting of said implant, said bore including a tapered portion, said tubular first part having a height measured between said lower end and said upper end, said first part including a shoulder positioned below said upper end for supporting a dental prosthesis; and an elongated second part for extending through said bore of said first part, said second part including a threaded stem for engaging said threaded bore of said implant and a post protruding above said upper end of said first part by a distance that is larger than said height of said tubular first part, said elongated second part including a tapered outer surface for engaging said tapered portion of said bore.
Claim 57
Dependent Claim
177 words
An abutment for attaching to a dental implant embedded in living jawbone and having a fitting at its upper end, said abutment comprising: a tubular first part having an upper end, a lower end, a central axis, and a bore extending therethrough along said central axis, said tubular first part having adjacent to said lower end an interlocking fitting for mating with said fitting of said implant, said bore including a tapered portion, said tubular first part having a height measured between said lower end and said upper end, said first part including a shoulder positioned below said upper end for supporting a dental prosthesis; and an elongated second part for extending through said bore of said first part, said second part including a threaded stem for engaging said threaded bore of said implant and a post protruding above said upper end of said first part by a distance that is larger than said height of said tubular first part, said elongated second part including a tapered outer surface for engaging said tapered portion of said bore.
Claim 58
Dependent Claim
39 words
The abutment of claim 50, wherein said tapered portion of said bore and said tapered outer surface of said elongated second part are angled between 5° to 20° to provide a locking engagement between said first and second parts.
Claim 59
Dependent Claim
56 words
The abutment of claim 50, wherein said shoulder separates first and second regions of said first part, said first region being adjacent to said implant and flaring outwardly from said central axis in a direction away from said lower end, said second region flaring inwardly toward said central axis in a direction toward said upper end.
Claim 60
Dependent Claim
168 words
An abutment for attaching to a dental implant embedded in living jawbone and having a fitting at its upper end, said abutment comprising: a tubular first part having an upper end, a lower end, a central axis, and a bore extending therethrough along said central axis, said tubular first part having adjacent to said lower end an interlocking fitting for mating with said fitting of said implant, said bore including a tapered portion, said first part including a shoulder positioned below said upper end for supporting a dental prosthesis; and an elongated second part for extending through said bore of said first part, said second part including a threaded stem for engaging said threaded bore of said implant and a post protruding above said first part by a distance that is at least as large as approximately the length of said second part below said upper end of said first part, said elongated second part including a tapered outer surface for engaging said tapered portion of said bore.
Claim 61
Dependent Claim
168 words
An abutment for attaching to a dental implant embedded in living jawbone and having a fitting at its upper end, said abutment comprising: a tubular first part having an upper end, a lower end, a central axis, and a bore extending therethrough along said central axis, said tubular first part having adjacent to said lower end an interlocking fitting for mating with said fitting of said implant, said bore including a tapered portion, said first part including a shoulder positioned below said upper end for supporting a dental prosthesis; and an elongated second part for extending through said bore of said first part, said second part including a threaded stem for engaging said threaded bore of said implant and a post protruding above said first part by a distance that is at least as large as approximately the length of said second part below said upper end of said first part, said elongated second part including a tapered outer surface for engaging said tapered portion of said bore.
Claim 62
Dependent Claim
257 words
The combination of a dental implant, an abutment, and an impression coping, said implant for integrating with living jawbone and including a threaded bore and a boss protruding away from an upper portion thereof for engaging said abutment, said abutment comprising: a first part having an upper end, a lower end, a central axis, and a bore extending therethrough along said central axis, said first part having adjacent to said lower end a socket for receiving said boss of said implant, a portion of said bore being defined by a surface that tapers inwardly toward said central axis in a direction toward said lower end at a predetermined angle, said first part including a shoulder positioned below said upper end for supporting a dental prosthesis; and an elongated second part for extending through said bore of said first part, said second part including a threaded portion for engaging said threaded bore of said implant and a post protruding substantially above said upper end of said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle for engaging said tapered surface of said first part, said post engaging the wall defining said bore immediately adjacent to said upper end of said first part and including a threaded hole for receiving a screw to attach a component onto said second part; and wherein said impression coping fits over said post and is attached thereon by a screw engaging said threaded hole in said post.
Claim 63
Dependent Claim
257 words
The combination of a dental implant, an abutment, and an impression coping, said implant for integrating with living jawbone and including a threaded bore and a boss protruding away from an upper portion thereof for engaging said abutment, said abutment comprising: a first part having an upper end, a lower end, a central axis, and a bore extending therethrough along said central axis, said first part having adjacent to said lower end a socket for receiving said boss of said implant, a portion of said bore being defined by a surface that tapers inwardly toward said central axis in a direction toward said lower end at a predetermined angle, said first part including a shoulder positioned below said upper end for supporting a dental prosthesis; and an elongated second part for extending through said bore of said first part, said second part including a threaded portion for engaging said threaded bore of said implant and a post protruding substantially above said upper end of said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle for engaging said tapered surface of said first part, said post engaging the wall defining said bore immediately adjacent to said upper end of said first part and including a threaded hole for receiving a screw to attach a component onto said second part; and wherein said impression coping fits over said post and is attached thereon by a screw engaging said threaded hole in said post.
References Cited (Backward Citations)
GB1291470A
Cited
DE2114323A1
Cited
US3958471A
Cited
US4011602A
Cited
US4177562A
Cited
US4624673A
Cited
US4547157A
Cited
US4772204A
Cited
WO1985002337A1
Cited
DE3531389A1
Cited
US5344457A
Cited
US5071351A
Cited
US4738623A
Cited
US4713004A
Cited
US4872839A
Cited
US4988297A
Cited
DE4028855A1
Cited
US5035619A
Cited
US5073111A
Cited
US5145372A
Cited
US5350300A
Cited
US5286195A
Cited
US5169308A
Cited
US5334024A
Cited
US5135395A
Cited
US5195892A
Cited
US5209659A
Cited
US5100323A
Cited
US5122059A
Cited
US5104318A
Cited
US5125839A
Cited
US5437551A
Cited
US5197881A
Cited
US5538426A
Cited
US5588838A
Cited
US5476382A
Cited
US5431567A
Cited
US5362235A
Cited
US5547377A
Cited
US5297963A
Cited
US5368483A
Cited
US5433606A
Cited
US5362234A
Cited
US5533898A
Cited
US5417570A
Cited
US5564924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-02 | 2002-05-04 | 2002-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-02 | 2006-05-04 | 2006-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-02 | 2010-05-04 | 2010-11-03 | $7700.00 | Window Closed / Lapsed |