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US2874467A
Expired / Lapsed
US
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Artificial dentures and process of preparing
Assignee: Bayer AG
•
Filing: 1954-05-26
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Granted: 1959-02-24
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Expires: 1974-05-26
Abstract
No abstract record available.
Inventors
- 👤 Becker Wilhelm
- 👤 Steuer Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:47
CPC Classifications
A; A61; A61C; A61C13/00; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
AN ARTIFICAL DENTURE COMPRISING A HARD, ARTIFICIAL BASE MATERIAL AND A SOFT CUSHION LINING INATEGRALLY ATTACHED TO THE TISSUE SIDE OF SAID BASE MATERIAL, SAID LINING CONSISTING ESSENTIALLY OF A COPOLYMER OF (1) A MEMBER OF THE GROUP CONSISTING OF POLYMERIZABLE VINYL AND DIVINYL COMPOUNDS AND (2) BUTADIENE.
Claim 2
Dependent Claim
48 words
AN ARTIFICAL DENTURE COMPRISING A HARD, ARTIFICIAL BASE MATERIAL AND A SOFT CUSHION LINING INATEGRALLY ATTACHED TO THE TISSUE SIDE OF SAID BASE MATERIAL, SAID LINING CONSISTING ESSENTIALLY OF A COPOLYMER OF (1) A MEMBER OF THE GROUP CONSISTING OF POLYMERIZABLE VINYL AND DIVINYL COMPOUNDS AND (2) BUTADIENE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |