Patent US3462401A successfully refreshed from Google Patents.
US3462401A
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Polytetrafluoroethylene molding powder and method of preparation thereof
Assignee: Daikin Industries Ltd
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Filing: 1966-01-04
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Granted: 1969-08-19
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Expires: 1986-01-04
Abstract
No abstract record available.
Inventors
- 👤 Yutaka Kometani
- 👤 Shun Koizumi
- 👤 Syozo Fumoto
- 👤 Singo Tanigawa
- 👤 Takeaki Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:13
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/08; C; C08; C08F; C08F14/00; C08F14/18; C08F14/26; C08F2438/00; C08F2438/01; Y; Y10; Y10S; Y10S526/00; Y10S526/909; Y10S526/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2952669A
Cited
US3345317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |