US2728698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cementable polytetrafluoroethylene and the method of making articles thereof cementable
Assignee: UNITED STATES GASKET Co
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Filing: 1953-12-10
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Granted: 1955-12-27
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Expires: 1973-12-10
Abstract
No abstract record available.
Inventors
- 👤 Rudner Merritt Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:02
CPC Classifications
C; C08; C08J; C08J5/00; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/22; B32; B32B; B32B27/00; B32B37/00; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/18; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/902; Y10S425/00; Y10S425/055; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/109; Y10T442/131; Y10T442/133; Y10T442/148; Y10T442/20; Y10T442/2738
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
22 words
A CEMENTABLE ARTICLE OF POLYTETRAFLUOROETHYLENE COMPRISING A DENSE, NON-POROUS BODY OF POLYTETRAFLUOROETHYLENE AND AN INTEGRAL SHEET OF SEPARATELY PERFORMED POROUS ABSORBABLE MATERIAL.
References Cited (Backward Citations)
US2357513A
Cited
US2400091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |