Patent DE716944C successfully refreshed from Google Patents.
US2736680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamination of fluorocarbons such as polytrifluorochloroethylene with other materials
Assignee: Connecticut Hard Rubber Co
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Filing: 1953-04-07
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Granted: 1956-02-28
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Expires: 1973-04-07
Abstract
No abstract record available.
Inventors
- 👤 Alfred S Kidwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:59
CPC Classifications
B; B32; B32B; B32B27/00; Y; Y10; Y10S; Y10S138/00; Y10S138/03
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
105 words
THE METHOD OF BONDING A SHEET OF HIGH-MOLECULAR WEIGHT FLUOROCARBON POLYMER TO ANOTHER MATERIAL, WHICH COMPRISES FORMING AN INTIMATE MIXTURE OF FINELY DIVIDED FLUOROCARBON POLYMER AND FINELY DIVIDED POLYALKYLENE POLYSULFIDE RUBBER ON A SURFACE OF THE SHEET, FUSING IT THEREON TO PROVIDE ON THE SHEET A COMPOSITE PRIMING COATING, AND THEN ADHESIVELY SECURING THE SHEET TO THE OTHER MATERIAL BY THE USE OF A CEMENT APPLIED TO THE OTHER MATERIAL AND TO SAID PRIMING COATING, SAID CEMENT CONTAINING UNCURED POLYALKYLENE POLYSULFIDE RUBBER, AND LETTING THE RESULTING ASSEMBLY STAND FOR ABOUT 24 HOURS AT ROOM TEMPERATURE TO ACCOMPLISH THE CURING OF THE RUBBER IN THE CEMENT.
Claim 2
Independent Claim
105 words
THE METHOD OF BONDING A SHEET OF HIGH-MOLECULAR WEIGHT FLUOROCARBON POLYMER TO ANOTHER MATERIAL, WHICH COMPRISES FORMING AN INTIMATE MIXTURE OF FINELY DIVIDED FLUOROCARBON POLYMER AND FINELY DIVIDED POLYALKYLENE POLYSULFIDE RUBBER ON A SURFACE OF THE SHEET, FUSING IT THEREON TO PROVIDE ON THE SHEET A COMPOSITE PRIMING COATING, AND THEN ADHESIVELY SECURING THE SHEET TO THE OTHER MATERIAL BY THE USE OF A CEMENT APPLIED TO THE OTHER MATERIAL AND TO SAID PRIMING COATING, SAID CEMENT CONTAINING UNCURED POLYALKYLENE POLYSULFIDE RUBBER, AND LETTING THE RESULTING ASSEMBLY STAND FOR ABOUT 24 HOURS AT ROOM TEMPERATURE TO ACCOMPLISH THE CURING OF THE RUBBER IN THE CEMENT.
Claim 3
Dependent Claim
56 words
A LAMINATE OF HIGH-MOLECULAR-WEIGHT FLUOROCARBON POLYMER AND ANOTHER MATERIAL, THE FLUOROCARBON LAYER HAVING ON ONE SURFACE A STRONGLY ADHERENT FUSED COATING OF PARTICLES OF THE SAME FLUOROCARBON POLYMER AND PARTICLES OF POLYALKYLENE POLYSULFIDE RUBBER, AND THE LAYER OF THE OTHER MATERIAL BEING BONDED TO SAID COATING BY A LAYER OF CURED CEMENT CONTAINING POLYALKYLENE POLYSULFIDE RUBBER.
Claim 4
Dependent Claim
56 words
A LAMINATE OF HIGH-MOLECULAR-WEIGHT FLUOROCARBON POLYMER AND ANOTHER MATERIAL, THE FLUOROCARBON LAYER HAVING ON ONE SURFACE A STRONGLY ADHERENT FUSED COATING OF PARTICLES OF THE SAME FLUOROCARBON POLYMER AND PARTICLES OF POLYALKYLENE POLYSULFIDE RUBBER, AND THE LAYER OF THE OTHER MATERIAL BEING BONDED TO SAID COATING BY A LAYER OF CURED CEMENT CONTAINING POLYALKYLENE POLYSULFIDE RUBBER.
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) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |