Patent US3889374A successfully refreshed from Google Patents.
US3889374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental prosthetic appliance
Assignee: Dentsply Research and Development Corp
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Filing: 1971-01-29
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Granted: 1975-06-17
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Expires: 1991-01-29
Abstract
Abstract An improvement in dental prosthetic appliances is disclosed wherein fluorinated resins in particular fluorinated polyolefins are employed in the denture base material.
Inventors
- 👤 Jacob A Saffir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:21
CPC Classifications
A; A61; A61C; A61C13/00; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
47 words
A DENTAL PROSTHETIC APPLIANCE COMPRISING ARTIFICIAL TEETH ATTACHED TO A DENTURE BASE MATERIAL WHEREIN SUBSTANTIALLY ALL OF THE EXPOSED SURFACES OF SAID DENTURE BASE MATERIAL THEREOGF CONTAINS LAMINATED THERETO A LAYER OF A POLYMERIZED FLUOROCARBON RESIN SELECTED FROM THE GROUP CONSISTING OF FLUORINATED POLYOLEFINS AND FLUORINATED POLYVINYLIDENE.
Claim 2
Dependent Claim
47 words
A DENTAL PROSTHETIC APPLIANCE COMPRISING ARTIFICIAL TEETH ATTACHED TO A DENTURE BASE MATERIAL WHEREIN SUBSTANTIALLY ALL OF THE EXPOSED SURFACES OF SAID DENTURE BASE MATERIAL THEREOGF CONTAINS LAMINATED THERETO A LAYER OF A POLYMERIZED FLUOROCARBON RESIN SELECTED FROM THE GROUP CONSISTING OF FLUORINATED POLYOLEFINS AND FLUORINATED POLYVINYLIDENE.
Claim 3
Dependent Claim
13 words
The dental prosthetic applicance of of claim 1 wherein the resin is polytetrafluoroethylene.
Claim 4
Dependent Claim
15 words
The dental prosthetic appliance of claim 1 wherein the resin is a fluorinated ethylene-propylene copolymer.
Claim 5
Dependent Claim
13 words
The dental prosthetic appliance of claim 1 wherein the resin is chlorinated trifluoroethylene.
Claim 6
Dependent Claim
16 words
A dental prosthetic appliance wherein the entire denture base is made of a polymerized fluorocarbon resin.
Claim 7
Dependent Claim
16 words
A dental prosthetic appliance wherein the entire denture base is made of a polymerized fluorocarbon resin.
Claim 8
Dependent Claim
49 words
A dental prosthetic appliance wherein the lingual portion of the denture base and the exposed buccal and labial portion of the denture base are coated with a polymerized fluorocarbon resin laminate and the remainder of the tissue touching surfaces of the denture base consists predominately of polymerized acrylic resins.
Claim 9
Dependent Claim
49 words
A dental prosthetic appliance wherein the lingual portion of the denture base and the exposed buccal and labial portion of the denture base are coated with a polymerized fluorocarbon resin laminate and the remainder of the tissue touching surfaces of the denture base consists predominately of polymerized acrylic resins.
Claim 10
Dependent Claim
20 words
A dental prosthetic appliance wherein substantially all of the exposed surfaces of said appliance consist essentially of polymerized fluorocarbon resins.
Claim 11
Dependent Claim
20 words
A dental prosthetic appliance wherein substantially all of the exposed surfaces of said appliance consist essentially of polymerized fluorocarbon resins.
References Cited (Backward Citations)
US2825706A
Cited
US3241238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |