Patent US20030199984A1 successfully refreshed from Google Patents.
US5645556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety penetrating instrument with triggered penetrating member retraction and single or multiple safety member protrusion
Assignee: Individual
•
Filing: 1994-07-22
•
Granted: 1997-07-08
•
Expires: 2014-07-22
Abstract
Abstract A safety penetrating instrument for establishing a portal in a wall of an anatomical cavity includes a cannula, a penetrating member disposed within the lumen of the cannula, a safety member movable relative to the penetrating member to place the tip of the penetrating member in a protected, non-exposed state, and various mechanisms for simultaneously retracting the penetrating member while extending one or both of the cannula and safety member from locked positions wherein the penetrating member is in an extended position and the cannula and safety member are in retracted positions. Retraction of the penetrating member and extension or protrusion of either or both of the safety member and portal sleeve is triggered individually or in combination by movement of one or more of the three members upon entering the anatomical cavity. Additionally, a probe can be carried by the safety penetrating instrument for triggering retraction and/or extension of the members in a similar manner or upon moving a predetermined proximal distance during penetration of the anatomical cavity wall.
Inventors
- 👤 Inbae Yoon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:54
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3494; A61B17/3496; A61B10/00; A61B10/02; A61B10/0233; A61B17/3417; A61B17/3474; A61B17/3498; A61B17/32; A61B17/320016; A61B2017/32004; A61B2017/348; A61B2017/3482; A61B2017/349; A61B90/00; A61B90/08; A61B2090/0801; A61B2090/08021
Claims Analysis
Total Claims: 63
Claim 1
Independent Claim
299 words
A safety penetrating instrument for establishing a portal in a wall of an anatomical cavity comprising a housing; a cannula mounted by said housing and having a distal end for positioning within the anatomical cavity, a proximal end for positioning externally of the anatomical cavity wall and a lumen extending between said distal and proximal ends of said cannula; a penetrating member disposed in said cannula and having a distal end for penetrating the anatomical cavity wall; a safety member movable relative to said housing between a safety member retracted position exposing said distal end of said penetrating member and a safety member extended position placing said distal end of said penetrating member in a protected, non-exposed state; retracting means for moving said penetrating member proximally relative to said housing from a penetrating member extended position to a penetrating member retracted position; extending means for moving at least one of said cannula and said safety member distally relative to said housing from a retracted position to an extended position; locking means for locking said penetrating member in said penetrating member extended position and at least one of said cannula and said safety member in said retracted position to prevent distal movement thereof relative to said housing beyond said retracted position; and releasing means responsive to entry of said safety penetrating instrument into the anatomical cavity for triggering release of said locking means to permit said retracting means to move said penetrating member proximally relative to said housing from said penetrating member extended position to said penetrating member retracted position and to permit said extending means to move at least one of said cannula and said safety member distally relative to said housing from said retracted position to said extended position to protect said distal end of said penetrating member.
Claim 2
Dependent Claim
299 words
A safety penetrating instrument for establishing a portal in a wall of an anatomical cavity comprising a housing; a cannula mounted by said housing and having a distal end for positioning within the anatomical cavity, a proximal end for positioning externally of the anatomical cavity wall and a lumen extending between said distal and proximal ends of said cannula; a penetrating member disposed in said cannula and having a distal end for penetrating the anatomical cavity wall; a safety member movable relative to said housing between a safety member retracted position exposing said distal end of said penetrating member and a safety member extended position placing said distal end of said penetrating member in a protected, non-exposed state; retracting means for moving said penetrating member proximally relative to said housing from a penetrating member extended position to a penetrating member retracted position; extending means for moving at least one of said cannula and said safety member distally relative to said housing from a retracted position to an extended position; locking means for locking said penetrating member in said penetrating member extended position and at least one of said cannula and said safety member in said retracted position to prevent distal movement thereof relative to said housing beyond said retracted position; and releasing means responsive to entry of said safety penetrating instrument into the anatomical cavity for triggering release of said locking means to permit said retracting means to move said penetrating member proximally relative to said housing from said penetrating member extended position to said penetrating member retracted position and to permit said extending means to move at least one of said cannula and said safety member distally relative to said housing from said retracted position to said extended position to protect said distal end of said penetrating member.
Claim 3
Dependent Claim
52 words
A safety penetrating instrument as recited in claim 1 wherein said penetrating member includes a proximal end and said safety member includes a proximal end, wherein said housing mounts said proximal end of said cannula and further comprising a hub mounting said proximal ends of said penetrating member and said safety member.
Claim 4
Dependent Claim
25 words
A safety penetrating instrument as recited in claim 1 wherein said releasing means is responsive to entry of said safety member into the anatomical cavity.
Claim 5
Dependent Claim
65 words
A safety penetrating instrument as recited in claim 3 and further comprising bias means for biasing said safety member distally while permitting a predetermined amount of proximal movement thereof during penetration of the anatomical cavity wall and wherein said releasing means is responsive to distal movement of said safety member caused by said bias means upon entry of said safety member into the anatomical cavity.
Claim 6
Dependent Claim
54 words
A safety penetrating instrument as recited in claim 4 wherein said extending means is operable to move said safety member distally toward said extended position and said locking means includes a latching member that engages said safety member in said retracted position to prevent distal movement of said safety member beyond a predetermined position.
Claim 7
Dependent Claim
51 words
A safety penetrating instrument as recited in claim 4 wherein said extending means is operable to move said cannula distally toward said extended position and said locking means includes a latching member that engages said cannula in said retracted position to prevent distal movement of said cannula beyond a predetermined position.
Claim 8
Dependent Claim
62 words
A safety penetrating instrument as recited in claim 4 wherein said extending means is operable to move said cannula and said safety member distally toward said extended positions and said locking means engages said cannula and said safety member in said retracted positions to prevent distal movement of said cannula beyond a predetermined position and said safety member beyond a predetermined position.
Claim 9
Dependent Claim
25 words
A safety penetrating instrument as recited in claim 1 wherein said releasing means is responsive to entry of said penetrating member into the anatomical cavity.
Claim 10
Dependent Claim
65 words
A safety penetrating instrument as recited in claim 8 and further comprising bias means for biasing said penetrating member distally while permitting a predetermined amount of proximal movement thereof during penetration of the anatomical cavity wall and wherein said releasing means is responsive to distal movement of said penetrating member caused by said bias means upon entry of said penetrating member into the anatomical cavity.
Claim 11
Dependent Claim
54 words
A safety penetrating instrument as recited in claim 9 wherein said extending means is operable to move said safety member distally toward said extended position and said locking means includes a latching member that engages said safety member in said retracted position to prevent distal movement of said safety member beyond a predetermined position.
Claim 12
Dependent Claim
51 words
A safety penetrating instrument as recited in claim 9 wherein said extending means is operable to move said cannula distally toward said extended position and said locking means includes a latching member that engages said cannula in said retracted position to prevent distal movement of said cannula beyond a predetermined position.
Claim 13
Dependent Claim
62 words
A safety penetrating instrument as recited in claim 9 wherein said extending means is operable to move said cannula and said safety member distally toward said extended positions and said locking means engages said cannula and said safety member in said retracted positions to prevent distal movement of said cannula beyond a predetermined position and said safety member beyond a predetermined position.
Claim 14
Dependent Claim
24 words
A safety penetrating instrument as recited in claim 1 wherein said releasing means is responsive to entry of said cannula into the anatomical cavity.
Claim 15
Dependent Claim
62 words
A safety penetrating instrument as recited in claim 13 and further comprising bias means for biasing said cannula distally while permitting a predetermined amount of proximal movement thereof during penetration of the anatomical cavity wall and wherein said releasing means is responsive to distal movement of said cannula caused by said bias means upon entry of said cannula into the anatomical cavity.
Claim 16
Dependent Claim
54 words
A safety penetrating instrument as recited in claim 14 wherein said extending means is operable to move said safety member distally toward said extended position and said locking means includes a latching member that engages said safety member in said retracted position to prevent distal movement of said safety member beyond a predetermined position.
Claim 17
Dependent Claim
51 words
A safety penetrating instrument as recited in claim 14 wherein said extending means is operable to move said cannula distally toward said extended position and said locking means includes a latching member that engages said cannula in said retracted position to prevent distal movement of said cannula beyond a predetermined position.
Claim 18
Dependent Claim
62 words
A safety penetrating instrument as recited in claim 14 wherein said extending means is operable to move said cannula and said safety member distally toward said extended positions and said locking means engages said cannula and said safety member in said retracted positions to prevent distal movement of said cannula beyond a predetermined position and said safety member beyond a predetermined position.
Claim 19
Dependent Claim
29 words
A safety penetrating instrument as recited in claim 1 wherein said releasing means is responsive to entry of said safety member and said penetrating member into the anatomical cavity.
Claim 20
Dependent Claim
93 words
A safety penetrating instrument as recited in claim 18 and further comprising bias means for biasing said safety member and said penetrating member distally while permitting a predetermined amount of proximal movement of said safety member and said penetrating member during penetration of the anatomical cavity wall and wherein said releasing means is responsive to distal movement of at least one of said safety member and said penetrating member caused by said bias means upon entry of said at least one of said safety member and said penetrating member into the anatomical cavity.
Claim 21
Dependent Claim
54 words
A safety penetrating instrument as recited in claim 19 wherein said extending means is operable to move said safety member distally toward said extended position and said locking means includes a latching member that engages said safety member in said retracted position to prevent distal movement of said safety member beyond a predetermined position.
Claim 22
Dependent Claim
51 words
A safety penetrating instrument as recited in claim 19 wherein said extending means is operable to move said cannula distally toward said extended position and said locking means includes a latching member that engages said cannula in said retracted position to prevent distal movement of said cannula beyond a predetermined position.
Claim 23
Dependent Claim
62 words
A safety penetrating instrument as recited in claim 19 wherein said extending means is operable to move said cannula and said safety member distally toward said extended positions and said locking means engages said cannula and said safety member in said retracted positions to prevent distal movement of said cannula beyond a predetermined position and said safety member beyond a predetermined position.
Claim 24
Dependent Claim
28 words
A safety penetrating instrument as recited in claim 1 wherein said releasing means is responsive to entry of said safety member and said cannula into the anatomical cavity.
Claim 25
Dependent Claim
89 words
A safety penetrating instrument as recited in claim 23 and further comprising bias means for biasing said safety member and said cannula distally while permitting a predetermined amount of proximal movement of said safety member and said cannula during penetration of the anatomical cavity wall and wherein said releasing means is responsive to distal movement of at least one of said safety member and said cannula caused by said bias means upon entry of said at least one of said safety member and said cannula into the anatomical cavity.
Claim 26
Dependent Claim
54 words
A safety penetrating instrument as recited in claim 24 wherein said extending means is operable to move said safety member distally toward said extended position and said locking means includes a latching member that engages said safety member in said retracted position to prevent distal movement of said safety member beyond a predetermined position.
Claim 27
Dependent Claim
51 words
A safety penetrating instrument as recited in claim 24 wherein said extending means is operable to move said cannula distally toward said extended position and said locking means includes a latching member that engages said cannula in said retracted position to prevent distal movement of said cannula beyond a predetermined position.
Claim 28
Dependent Claim
62 words
A safety penetrating instrument as recited in claim 24 wherein said extending means is operable to move said cannula and said safety member distally toward said extended positions and said locking means engages said cannula and said safety member in said retracted positions to prevent distal movement of said cannula beyond a predetermined position and said safety member beyond a predetermined position.
Claim 29
Dependent Claim
28 words
A safety penetrating instrument as recited in claim 1 wherein said releasing means is responsive to entry of said penetrating member and said cannula into the anatomical cavity.
Claim 30
Dependent Claim
89 words
A safety penetrating instrument as recited in claim 28 and further comprising bias means for biasing said penetrating member and said cannula distally while permitting a predetermined amount of proximal movement of said penetrating member and said cannula during penetration of the anatomical cavity wall and wherein said releasing means is responsive to distal movement of at least one of said penetrating member and said cannula caused by said bias means upon entry of said at least one of said penetrating member and said cannula into the anatomical cavity.
Claim 31
Dependent Claim
54 words
A safety penetrating instrument as recited in claim 29 wherein said extending means is operable to move said safety member distally toward said extended position and said locking means includes a latching member that engages said safety member in said retracted position to prevent distal movement of said safety member beyond a predetermined position.
Claim 32
Dependent Claim
51 words
A safety penetrating instrument as recited in claim 29 wherein said extending means is operable to move said cannula distally toward said extended position and said locking means includes a latching member that engages said cannula in said retracted position to prevent distal movement of said cannula beyond a predetermined position.
Claim 33
Dependent Claim
62 words
A safety penetrating instrument as recited in claim 29 wherein said extending means is operable to move said cannula and said safety member distally toward said extended positions and said locking means engages said cannula and said safety member in said retracted positions to prevent distal movement of said cannula beyond a predetermined position and said safety member beyond a predetermined position.
Claim 34
Dependent Claim
31 words
A safety penetrating instrument as recited in claim 1 wherein said releasing means is responsive to entry of said safety member, said penetrating member and said cannula into the anatomical cavity.
Claim 35
Dependent Claim
101 words
A safety penetrating instrument as recited in claim 33 and further comprising bias means for biasing said safety member, said penetrating member and said cannula distally while permitting a predetermined amount of proximal movement of said safety member, said penetrating member and said cannula during penetration of the anatomical cavity wall and wherein said releasing means is responsive to distal movement of at least one of said safety member, said penetrating member and said cannula caused by said bias means upon entry of said at least one of said safety member, said penetrating member and said cannula into the anatomical cavity.
Claim 36
Dependent Claim
54 words
A safety penetrating instrument as recited in claim 34 wherein said extending means is operable to move said safety member distally toward said extended position and said locking means includes a latching member that engages said safety member in said retracted position to prevent distal movement of said safety member beyond a predetermined position.
Claim 37
Dependent Claim
51 words
A safety penetrating instrument as recited in claim 34 wherein said extending means is operable to move said cannula distally toward said extended position and said locking means includes a latching member that engages said cannula in said retracted position to prevent distal movement of said cannula beyond a predetermined position.
Claim 38
Dependent Claim
62 words
A safety penetrating instrument as recited in claim 34 wherein said extending means is operable to move said cannula and said safety member distally toward said extended positions and said locking means engages said cannula and said safety member in said retracted positions to prevent distal movement of said cannula beyond a predetermined position and said safety member beyond a predetermined position.
Claim 39
Dependent Claim
91 words
A safety penetrating instrument as recited in claim 1 and further comprising a trigger member movable a predetermined proximal distance during penetration of the anatomical cavity wall for triggering release of said locking means to permit said retracting means to move said penetrating member from said extended position to said retracted position and to permit said extending means to move at least one of said safety member and said cannula from said retracted position to said extended position, said predetermined distance corresponding approximately to the thickness of the anatomical cavity wall.
Claim 40
Dependent Claim
34 words
A safety penetrating instrument as recited in claim 38 and further comprising a hub mounting a proximal end of said penetrating member, wherein said trigger member has a proximal end mounted on said hub.
Claim 41
Dependent Claim
34 words
A safety penetrating instrument as recited in claim 39 wherein said housing mounts said proximal end of said cannula and wherein said trigger member extends through said housing to be disposed alongside said cannula.
Claim 42
Dependent Claim
21 words
A safety penetrating instrument as recited in claim 39 wherein said trigger member extends between said cannula and said safety member.
Claim 43
Dependent Claim
22 words
A safety penetrating instrument as recited in claim 39 wherein said trigger member extends between said safety member and said penetrating member.
Claim 44
Dependent Claim
23 words
A safety penetrating instrument as recited in claim 39 wherein said trigger member extends through a bore formed lengthwise in said penetrating member.
Claim 45
Dependent Claim
51 words
A safety penetrating instrument as recited in claim 38 wherein said extending means is operable to move said cannula distally toward said extended position and said locking means includes a latching member that engages said cannula in said retracted position to prevent distal movement of said cannula beyond a predetermined position.
Claim 46
Dependent Claim
62 words
A safety penetrating instrument as recited in claim 38 wherein said extending means is operable to move said cannula and said safety member distally toward said extended positions and said locking means engages said cannula and said safety member in said retracted positions to prevent distal movement of said cannula beyond a predetermined position and said safety member beyond a predetermined position.
Claim 47
Dependent Claim
85 words
A safety penetrating instrument as recited in claim 1 wherein said locking means includes a first latch engaging said cannula and a second latch engaging said penetrating member and said safety member, and wherein said releasing means includes first trigger means responsive to entry of said portal sleeve into the anatomical cavity for releasing said first latch and second trigger means responsive to entry of at least one of said penetrating member and said safety member into the anatomical cavity for releasing said second latch.
Claim 48
Dependent Claim
27 words
A safety penetrating instrument as recited in claim 1 wherein said safety member is a tubular safety shield disposed between said penetrating member and said portal sleeve.
Claim 49
Dependent Claim
69 words
A safety penetrating instrument as recited in claim 1 wherein said penetrating member is a hollow tubular member defining one or more apertures adjacent said distal end and said safety member is a safety probe disposed within said hollow tubular member and having a distal end configured to pass through said apertures when in said extended position and to be flush with said apertures when in said retracted position.
Claim 50
Dependent Claim
57 words
A safety penetrating instrument as recited in claim 1 wherein said penetrating member includes a tapered portion defining said distal end and, when said penetrating member is in an extended position, distal ends of said safety member and said cannula are aligned with a proximal end of said tapered portion and chamfered to provide a smooth transition.
Claim 51
Dependent Claim
72 words
A safety penetrating instrument as recited in claim 1 wherein said penetrating member includes a tapered portion defining said distal end, and, when said penetrating member is in an extended position, a distal end of said cannula is aligned with a proximal end of said tapered portion and chamfered to provide a smooth transition, and a distal end of said safety member is spaced proximally from said distal end of said cannula.
Claim 52
Dependent Claim
73 words
A safety penetrating instrument as recited in claim 1 wherein said penetrating member includes a tapered portion defining said distal end, and, when said penetrating member is in an extended position, a distal end of said safety member is aligned with a proximal end of said tapered portion and chamfered to provide a smooth transition, and a distal end of said cannula is spaced proximally from said distal end of said safety member.
Claim 53
Dependent Claim
73 words
A safety penetrating instrument as recited in claim 1 wherein said penetrating member includes a tapered portion defining said distal end, and, when said penetrating member is in an extended position, a distal end of said safety member is aligned with a proximal end of said tapered portion and chamfered to provide a smooth transition, and a distal end of said cannula is spaced distally from said distal end of said penetrating member.
Claim 54
Independent Claim
214 words
A method of forming a portal in the wall of an anatomical cavity comprising the steps of moving a penetrating member of a safety penetrating instrument distally relative to a housing of the safety penetrating instrument from a penetrating member retracted position to a penetrating member extended position; moving at least one of a cannula and a safety member of the safety penetrating instrument proximally relative to the housing from an extended position to a retracted position to expose the distal end of the penetrating member; mechanically locking the penetrating member in the penetrating member extended position and at least one of the cannula and the safety member in the retracted position; penetrating the anatomical cavity wall with the penetrating member locked in the penetrating member extended position and at least one of the cannula and the safety member in the retracted position; mechanically unlocking the penetrating member and at least one of the cannula and the safety member when the safety penetrating instrument enters the anatomical cavity; moving the penetrating member proximally relative to the housing from the penetrating member extended position to the penetrating member retracted position; and moving at least one of the cannula and the safety member distally relative to the housing from the retracted position to the extended position.
Claim 55
Independent Claim
214 words
A method of forming a portal in the wall of an anatomical cavity comprising the steps of moving a penetrating member of a safety penetrating instrument distally relative to a housing of the safety penetrating instrument from a penetrating member retracted position to a penetrating member extended position; moving at least one of a cannula and a safety member of the safety penetrating instrument proximally relative to the housing from an extended position to a retracted position to expose the distal end of the penetrating member; mechanically locking the penetrating member in the penetrating member extended position and at least one of the cannula and the safety member in the retracted position; penetrating the anatomical cavity wall with the penetrating member locked in the penetrating member extended position and at least one of the cannula and the safety member in the retracted position; mechanically unlocking the penetrating member and at least one of the cannula and the safety member when the safety penetrating instrument enters the anatomical cavity; moving the penetrating member proximally relative to the housing from the penetrating member extended position to the penetrating member retracted position; and moving at least one of the cannula and the safety member distally relative to the housing from the retracted position to the extended position.
Claim 56
Dependent Claim
60 words
A method as recited in claim 53 and further comprising, after said locking step and prior to said penetrating step, biasing at least one of said penetrating member, safety member and said cannula in a distal direction while permitting a predetermined amount of proximal movement of said at least one of said penetrating member, safety member and cannula during penetration.
Claim 57
Dependent Claim
35 words
A method as recited in claim 54 wherein unlocking includes unlocking said penetrating member and at least one of said portal sleeve and said safety member upon entry of said cannula into the anatomical cavity.
Claim 58
Dependent Claim
36 words
A method as recited in claim 54 wherein unlocking includes unlocking said penetrating member and at least one of said portal sleeve and said safety member upon entry of said safety member into the anatomical cavity.
Claim 59
Dependent Claim
36 words
A method as recited in claim 54 wherein unlocking includes unlocking said penetrating member and at least one of said portal sleeve and said safety member upon entry of said penetrating member into the anatomical cavity.
Claim 60
Dependent Claim
39 words
A method as recited in claim 54 wherein unlocking includes unlocking said penetrating member and at least one of said portal sleeve and said safety member upon entry of said cannula and said safety member into the anatomical cavity.
Claim 61
Dependent Claim
38 words
A method as recited in claim 54 wherein unlocking includes unlocking said penetrating member and at least one of said portal sleeve and said safety member upon entry of said cannula and penetrating member into the anatomical cavity.
Claim 62
Dependent Claim
39 words
A method as recited in claim 54 wherein unlocking includes unlocking said penetrating member and at least one of said portal sleeve and said safety member upon entry of said safety member and penetrating member into the anatomical cavity.
Claim 63
Dependent Claim
48 words
A method as recited in claim 54 and further comprising contacting the anatomical cavity with a probe during said penetrating step and triggering unlocking of said penetrating member and at least one of said cannula and said safety member when the probe has moved a predetermined proximal distance.
References Cited (Backward Citations)
US1087845A
Cited
US1213001A
Cited
US1248492A
Cited
US1527291A
Cited
US2496111A
Cited
US2630803A
Cited
US2623521A
Cited
GB904635A
Cited
DE2544262A1
Cited
SU878265A1
Cited
US4345589A
Cited
US4254762A
Cited
US4442836A
Cited
SU897224A1
Cited
US4503856A
Cited
US4535773A
Cited
US4488545A
Cited
USRE32922E
Cited
US4601710B1
Cited
US4601710A
Cited
US4559041A
Cited
US4677979A
Cited
SU1435246A1
Cited
US4670008A
Cited
US4627841A
Cited
US4654030A
Cited
US4817603A
Cited
US5030206A
Cited
US4902280A
Cited
US4900307A
Cited
US4747831A
Cited
US4828547A
Cited
US4931042A
Cited
US4820275A
Cited
US4943280A
Cited
US5053016A
Cited
US4869717A
Cited
US5215526A
Cited
US5267965A
Cited
US5224952A
Cited
US5066288A
Cited
US4955870A
Cited
US4906236A
Cited
US5024665A
Cited
US4889117A
Cited
US4966593A
Cited
US4946446A
Cited
US5026388A
Cited
US4994042A
Cited
US5104383A
Cited
US5122122A
Cited
US4994068A
Cited
US4973316A
Cited
US5129885A
Cited
US5127909A
Cited
US5061251A
Cited
US5114407A
Cited
US5318580A
Cited
US5073169A
Cited
US5116353B1
Cited
US5116353A
Cited
US5318585A
Cited
US5226426A
Cited
US5261891A
Cited
US5104382A
Cited
US5338305A
Cited
US5152754A
Cited
US5224951A
Cited
US5368607A
Cited
US5295993A
Cited
US5256148A
Cited
US5290304A
Cited
WO1993004715A1
Cited
WO1993004632A1
Cited
WO1993004716A1
Cited
US5158552A
Cited
US5312354A
Cited
US5376082A
Cited
US5207647A
Cited
US5360405A
Cited
US5330432A
Cited
US5336176A
Cited
US5374252A
Cited
US5324268A
Cited
US5320610A
Cited
US5350393A
Cited
US5383859A
Cited
US5256149A
Cited
WO1993017626A1
Cited
US5226891A
Cited
US5248298A
Cited
US5290243A
Cited
US5246425A
Cited
US5275583A
Cited
US5372588A
Cited
US5364372A
Cited
US5366445A
Cited
US5380288A
Cited
US5346459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-07-07 | 2001-01-06 | 2001-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-07 | 2005-01-06 | 2005-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-07 | 2009-01-06 | 2009-07-08 | $7700.00 | Window Closed / Lapsed |