US3528955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polytetrafluoroethylene molding powder and process of preparing the same
Assignee: Zeneca Inc
•
Filing: 1967-05-16
•
Granted: 1970-09-15
•
Expires: 1987-05-16
Abstract
No abstract record available.
Inventors
- 👤 Edward H Lippman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:20
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; B; B29; B29B; B29B13/00; B29B13/10; B29C; B29C43/00; B29C43/006; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/18; Y; Y10; Y10S; Y10S526/00; Y10S526/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2936301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |