Patent US3758458A successfully refreshed from Google Patents.
US3758458A
Expired / Lapsed
US
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Low d p high d p viscose mixture using high cellulose concentration
Assignee: FMC Corp
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Filing: 1971-12-08
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Granted: 1973-09-11
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Expires: 1991-12-08
Abstract
Abstract A MIXTURE OF VISCOSE SOLUTIONS SUITBLE FOR PREPARING SHAPED REGENERATED CELLULOSE ARTICLES WHEREIN ONE VISCOSE CONTAINS A MEDIUM TO LOW CELLULOSE CONTENT AND THE CELLULOSE HAS A HIGH MOLECULAR WEIGHT AND THE OTHER VISCOSE CONTAINS A LARGE AMOUNT OF CELLULOSE WHICH HAS A MEDIUM TO LOW MOLECULAR WEIGHT, IS DISCLOSED HEREIN.
Inventors
- 👤 J Dyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:51
CPC Classifications
C; C08; C08B; C08B16/00; C08B9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |