US2851734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing dentures provided with soft linings
Assignee: Bayer AG
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Filing: 1951-07-03
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Granted: 1958-09-16
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Expires: 1971-07-03
Abstract
No abstract record available.
Inventors
- 👤 Schnell Hermann
- 👤 Becker Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:12
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0025; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE METHOD OF MAKING DENTURES WHICH COMPRISES PREPARING A THIN SHEET OF SOFT RESILIENT COPOLYMERIZATE CONTAINING NO PLASTICIZER AND FORMED BY POLYMERIZING A MIXTURE APPROXIMATELY 35% METHYL METHACRYLATE AND APPROXIMATELY 65% BUTYL ACRYLATE; PLACING SAID SHEET IN CONTACT WIHT A DOUGH OF POLYMERIC UNSATURATED ESTER DISPERSED IN MONOMERIC UNSATURATED ESTER IN GUM-ENGAGING POSITION IN A DENTURE MOLD; SUBJECTING THE MOLD TO HEAT WHEREBY THE UNSATURATED MONOMER AND POLYMER BECOMES A STRONG, HARD DENTURE BODY AND WHEREBY THE RESILIENT SHEET OF UNSATURATED ESTER COPOLYMERIZATE BECOMES FIRMLY BONDED THERETO.
Claim 2
Independent Claim
87 words
THE METHOD OF MAKING DENTURES WHICH COMPRISES PREPARING A THIN SHEET OF SOFT RESILIENT COPOLYMERIZATE CONTAINING NO PLASTICIZER AND FORMED BY POLYMERIZING A MIXTURE APPROXIMATELY 35% METHYL METHACRYLATE AND APPROXIMATELY 65% BUTYL ACRYLATE; PLACING SAID SHEET IN CONTACT WIHT A DOUGH OF POLYMERIC UNSATURATED ESTER DISPERSED IN MONOMERIC UNSATURATED ESTER IN GUM-ENGAGING POSITION IN A DENTURE MOLD; SUBJECTING THE MOLD TO HEAT WHEREBY THE UNSATURATED MONOMER AND POLYMER BECOMES A STRONG, HARD DENTURE BODY AND WHEREBY THE RESILIENT SHEET OF UNSATURATED ESTER COPOLYMERIZATE BECOMES FIRMLY BONDED THERETO.
References Cited (Backward Citations)
GB484343A
Cited
US2551812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |