Patent US4593401A successfully refreshed from Google Patents.
US4593401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endodontic film holder
Assignee: Individual
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Filing: 1984-03-29
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Granted: 1986-06-03
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Expires: 2004-03-29
Abstract
Abstract An endodontic film holder is disclosed which holds radiographic film in place for the taking of X-rays without necessitating removal from the tooth the endodontic file which is used during the root canal procedure. The device incorporates a dental floss loop to facilitate removal of the device and may be used in conjunction with a rubber dam and clamp.
Inventors
- 👤 James J. Colbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:47
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G03B42/04; G03B42/042; A; A61; A61B; A61B6/00; A61B6/50; A61B6/506
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
56 words
A radiographic film holder, comprising a one-piece, three-sided, box-shaped member means for placement over a tooth and for resting on said tooth so as to surround an endodontic file which is present in said tooth, and further having a slot therein into which radiographic film is inserted parallel to the direction of growth of said tooth.
Claim 2
Dependent Claim
56 words
A radiographic film holder, comprising a one-piece, three-sided, box-shaped member means for placement over a tooth and for resting on said tooth so as to surround an endodontic file which is present in said tooth, and further having a slot therein into which radiographic film is inserted parallel to the direction of growth of said tooth.
Claim 3
Dependent Claim
35 words
A radiographic film holder as described in claim 1, wherein said one-piece, box-shaped member means includes removal means, said removal means comprising a hole in one side thereof for receiving a loop of dental floss.
Claim 4
Dependent Claim
29 words
A radiographic film holder as described in claim 2, wherein said one-piece, box-shaped member means has a curved void means therein to facilitate reception of a rubber dam clamp.
Claim 5
Dependent Claim
29 words
A radiographic film holder as described in claim 1, wherein said one-piece, box-shaped member means has a curved void means therein to facilitate reception of a rubber dam clamp.
Claim 6
Dependent Claim
46 words
A radiographic film holder, comprising a one-piece, generally U-shaped member having a slot therein which is perpendicular to the plane of said "U" and into which radiographic film is inserted, and further having a curved void means therein to facilitate reception of a rubber dam clamp.
Claim 7
Dependent Claim
46 words
A radiographic film holder, comprising a one-piece, generally U-shaped member having a slot therein which is perpendicular to the plane of said "U" and into which radiographic film is inserted, and further having a curved void means therein to facilitate reception of a rubber dam clamp.
Claim 8
Dependent Claim
65 words
A radiographic film holder comprising: a. a one-piece, generally U-shaped member having a slot therein which is perpendicular to the plane of said "U" and into which radiographic film is inserted, and further having a hole through one point of said "U"; and b. means for facilitating removal of said member, said means comprising a loop of dental floss which is inserted through said hole.
Claim 9
Dependent Claim
65 words
A radiographic film holder comprising: a. a one-piece, generally U-shaped member having a slot therein which is perpendicular to the plane of said "U" and into which radiographic film is inserted, and further having a hole through one point of said "U"; and b. means for facilitating removal of said member, said means comprising a loop of dental floss which is inserted through said hole.
Claim 10
Dependent Claim
30 words
A radiographic film holder as described in claim 6, wherein said one-piece, box-shaped member has a curved void means therein so as to facilitate reception of a rubber dam clamp.
References Cited (Backward Citations)
US2926256A
Cited
US4114044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |