US2980965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making plastic film
Assignee: AMF Inc
•
Filing: 1958-02-28
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Granted: 1961-04-25
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Expires: 1978-02-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Infantino
- 👤 Donald A Savitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:03
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A METHOD OF MAKING POLYTETRAFLUOROETHYLENE FILM COMPRISING IN COMBINATION THE STEPS OF COATING AN ALUMINUM SURFACE WITH A DISPERSION OF POLYTETRAFLUOROETHYLENE IN A LIQUID, DRYING AND SINTERING SAID DISPERSION TO FORM A FILM AND THEREAFTER HEATING SAID FILM COATED ALUMINUM SURFACE TO REDUCE FILM ADHESION TO SAID ALUMINUM SURFACE AND PEELING SAID FILM FROM SAID SURFACE.
References Cited (Backward Citations)
CA547222A
Cited
US2485691A
Cited
US2540962A
Cited
US2578522A
Cited
US2751315A
Cited
US2774109A
Cited
US2710266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |