Patent US3540923A successfully refreshed from Google Patents.
US3540923A
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Method for treating textile materials with a fluorocarbon resin
Assignee: Dow Chemical Co
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Filing: 1967-12-15
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Granted: 1970-11-17
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Expires: 1987-12-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Rozek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:21
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; D06M13/00; D06M13/10; D06M13/12; D06M13/127; D06M23/00; D06M23/10; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2172; Y10T442/2189
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2642416A
Cited
US2803615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |