Patent US4533325A successfully refreshed from Google Patents.
US4533325A
Expired / Lapsed
US
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Method and apparatus to produce artificial teeth for dentures
Assignee: Dentsply Research and Development Corp
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Filing: 1983-07-01
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Granted: 1985-08-06
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Expires: 2003-07-01
Abstract
Abstract This invention pertains to a method and apparatus to fabricate economical full arch unitary upper and lower sets of artificial teeth for use in preparing dentures for edentulous dental patients and attaching said sets of teeth to denture base material by a process developed for the purpose of utilizing these sets of teeth and converting them into finished upper and lower dentures by the use of a specialized apparatus. The process and apparatus, per se, are the subject of another related application and eliminates the conventional procedure of mounting individual artificial teeth in the normal process of fabricating dentures.
Inventors
- 👤 John J. Blair
- 👤 Frank P. Fonvielle
- 👤 Richard A. Smith
- 👤 Barry D. Dehoff
- 👤 Roger C. Shue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:04
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/10; A61C13/1003; A61C13/1013; A61P; A61P11/00; C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/84; C07D233/90
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
87 words
A plurality of integral artificial teeth comprising at least one anterior tooth having its labial face disposed at an angle from the vertical of about 0° to 10° sloping backward from the incisal edge for at least about 70 percent of the length of the tooth, and at least one posterior tooth having its buccal face disposed at an angle from the vertical of about 1° to about 10° sloping inward from the gingival edge for at least about 90 percent of the length of the tooth.
Claim 2
Dependent Claim
87 words
A plurality of integral artificial teeth comprising at least one anterior tooth having its labial face disposed at an angle from the vertical of about 0° to 10° sloping backward from the incisal edge for at least about 70 percent of the length of the tooth, and at least one posterior tooth having its buccal face disposed at an angle from the vertical of about 1° to about 10° sloping inward from the gingival edge for at least about 90 percent of the length of the tooth.
Claim 3
Dependent Claim
17 words
The plurality of integral teeth according to claim 1 wherein said anterior tooth is a canine tooth.
Claim 4
Dependent Claim
59 words
The plurality of integral teeth of claim 1 wherein a planar member can be laid against the said buccal face of said posterior tooth and extend from the occlusal edge to the gingival edge of said tooth and not being out of contact with said tooth by more than 10° for 90 percent of the height of said tooth.
Claim 5
Dependent Claim
24 words
The plurality of integral teeth of claim 1 wherein there are at least two juxtapositioned anterior teeth and at least two juxtapositioned posterior teeth.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |