Patent US2909502A successfully refreshed from Google Patents.
US2909502A
Expired / Lapsed
US
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Method of producing vinyl alcohol polymer fibers and products thereof
Assignee: Kurashiki Rayon Co Ltd
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Filing: 1955-05-26
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Granted: 1959-10-20
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Expires: 1975-05-26
Abstract
No abstract record available.
Inventors
- 👤 Matsumoto Masakazu
- 👤 Osugi Tetsuro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:06
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/12; D; D01; D01F; D01F6/00; D01F6/28; D01F6/34
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
42 words
A FIBER SOLUBLE IN WATER AT 50*C. AND HAVING A TENACITY OF AT LEAST ABOUT 1.5 G./D. CONSISTING ESSENTIALLY OF A MIXTURE OF A VINYL ALCOHOL-ALLYL ALCOHOL COPOLYMER WITH VINYL ALCOHOL HOMOPOLYMER AND CONTAINING 2 TO 10 MOL PERCENT OF ALLYL ALCOHOL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |