US3202748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic fibers containing protein and process therefor
Assignee: Fujibo Holdings Inc
•
Filing: 1963-02-26
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Granted: 1965-08-24
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Expires: 1983-02-26
Abstract
No abstract record available.
Inventors
- 👤 Naka Morio
- 👤 Umebayashi Yutaka
- 👤 Itaya Minoru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:55
CPC Classifications
C; C08; C08L; C08L1/00; C08L1/08; C08L1/22; C08L1/24; D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS FOR THE PRODUCTION OF SYNTHETIC FIBER WHICH COMPRISES (A) MIXING EPICHLOROHYDRIN WITH PROTEIN, THE EPICHLOROHYDRIN BEING IN AN AMOUNT OF FROM 0.5 TO 10% BY WEIGHT BASED ON THE PROTEIN, (B) MIXING THE SOOBTAINED PROTEIN DERIVATIVES WITH VISCOSE, THE RATIO OF CELLULOSE TO PROTEIN BEING ABOUT 9:1 TO 7:3, AND (C) SPINNING THE SO-OBTAINED VISCOSE IN A SPINNING BATH.
Claim 2
Dependent Claim
61 words
A PROCESS FOR THE PRODUCTION OF SYNTHETIC FIBER WHICH COMPRISES (A) MIXING EPICHLOROHYDRIN WITH PROTEIN, THE EPICHLOROHYDRIN BEING IN AN AMOUNT OF FROM 0.5 TO 10% BY WEIGHT BASED ON THE PROTEIN, (B) MIXING THE SOOBTAINED PROTEIN DERIVATIVES WITH VISCOSE, THE RATIO OF CELLULOSE TO PROTEIN BEING ABOUT 9:1 TO 7:3, AND (C) SPINNING THE SO-OBTAINED VISCOSE IN A SPINNING BATH.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |