US3377412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl pyrrolidone in viscose and method of producing dye-receptive filaments
Assignee: Akzona Inc
•
Filing: 1967-08-14
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Granted: 1968-04-09
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Expires: 1987-08-14
Abstract
No abstract record available.
Inventors
- 👤 Neal E Franks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:31
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/02; D02G3/04; D02G3/045; C; C08; C08L; C08L1/00; C08L1/08; C08L1/22; C08L1/24; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10; D06; D06C; D06C23/00; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1629769A
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US2336341A
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US2975019A
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US2901457A
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US2882253A
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US2989360A
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US2897182A
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US3255275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |