Patent US2984599A successfully refreshed from Google Patents.
US2984599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for bonding teflon sheet to prepared surfaces
Assignee: Individual
•
Filing: 1956-06-29
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Granted: 1961-05-16
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Expires: 1976-06-29
Abstract
No abstract record available.
Inventors
- 👤 George D Edwards
- 👤 Thomas K Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:21
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/48
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
THE METHOD OF BONDING POLYTETRAFLUOROETHYLENE SHEETS TO ANOTHER MATERIAL TO PROVIDE A STREE-FREE STRUCTURE WHICH COMPRISES PRE-COATING THE SURFACE OF THE OTHE MATERIAL WITH A COMPOSITION CONTAINING POLYTETRAFLUOROETHYLENE, DRYING AND FUSING SAID COATING AT TEMPERATURES OF ABOUT 90*C. AND ABOUT 380*C. RESPECTIVELY PLACING THE SURFACE OF A SHEET OF POLYTETRAFLUOROETHYLENE IN DIRECT CONTACT WITH SAID COATING, FUSING SAID COATING AND SAID SHEET, AND PRESSING SAID COATING AND THE SURFACE OF SAID SHEET TOGETHER WHILE ANNEALING THEM TO WELL BELOW THE FUSION TEMPERATURE OF POLYTETRAFLUOROETHYLENE.
References Cited (Backward Citations)
US2484484A
Cited
GB660398A
Cited
US2578522A
Cited
US2731068A
Cited
US2762116A
Cited
US2705691A
Cited
US2728698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |