US3421972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for directly bonding polytetrafluoroethylene to metal,adhesive composition used therefor and laminated product thereof
Assignee: Beazer East Inc
•
Filing: 1965-06-28
•
Granted: 1969-01-14
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Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 John E Cromwell
- 👤 Arthur G Robson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:06
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B29; B29C; B29C65/00; B29C65/48; B29C65/486; B29C65/4865; B29C65/4885; B29C65/489; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/45; B29C66/70; B29C66/71; B29C66/73; B29C66/731; B29C66/7316; B29C66/73161; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49982; Y10T29/49986; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12063; Y10T428/12104; Y10T428/12111; Y10T428/12139; Y10T428/12472; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |