US3206344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bonding a copolymer film to metal
Assignee: EIDP Inc
•
Filing: 1962-01-26
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Granted: 1965-09-14
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Expires: 1982-01-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Vance Vernon Elkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:25
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/12; C08J5/124; B; B29; B29C; B29C63/00; B29C63/48; B32; B32B; B32B15/00; B32B15/04; B32B15/08; C08J2327/00; C08J2327/02; C08J2327/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS FOR BONDING A FILM OF A COPOLYMER OF HEXAFLUOROPROPYLENE AND TETRAFLUOROETHYLENE TO A METAL SURFACE COMPRISING: CLEANING SAID METAL SURFACE; COVERING SAID METAL SURFACE WITH AT LEAST ONE LAYER OF SAID COPOLYMER FILM; COVERING SAID COPOLYMER FILM COVERING WITH A LAYER OF POLYTETRAFLUOROETHYLENE FILM; COVERING SAID POLYTETRAFLUOROETHYLENE FILM LAYER WITH A LAYER OF A MATERIAL CONTAINING AN ACRYLONITRILE POLYMER; HEATING THE COVERED METAL SURFACE TO AT LEAST THE MELT TEMPERATURE OF SAID COPOLYMER FILM BUT BELOW THE MELT TEMPERATURE OF THE POLYTETRAFLUOROETHYLENE FILM; COOLING THE COVERED METAL SURFACE AND REMOVING THE ACRYLONITRILE CONTAINING MATERIAL AND THE POLYTETRAFLUOROETHYLENE FILM LAYER.
Claim 2
Dependent Claim
101 words
A PROCESS FOR BONDING A FILM OF A COPOLYMER OF HEXAFLUOROPROPYLENE AND TETRAFLUOROETHYLENE TO A METAL SURFACE COMPRISING: CLEANING SAID METAL SURFACE; COVERING SAID METAL SURFACE WITH AT LEAST ONE LAYER OF SAID COPOLYMER FILM; COVERING SAID COPOLYMER FILM COVERING WITH A LAYER OF POLYTETRAFLUOROETHYLENE FILM; COVERING SAID POLYTETRAFLUOROETHYLENE FILM LAYER WITH A LAYER OF A MATERIAL CONTAINING AN ACRYLONITRILE POLYMER; HEATING THE COVERED METAL SURFACE TO AT LEAST THE MELT TEMPERATURE OF SAID COPOLYMER FILM BUT BELOW THE MELT TEMPERATURE OF THE POLYTETRAFLUOROETHYLENE FILM; COOLING THE COVERED METAL SURFACE AND REMOVING THE ACRYLONITRILE CONTAINING MATERIAL AND THE POLYTETRAFLUOROETHYLENE FILM LAYER.
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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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |