US2881046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reacting protein fibers with
Assignee: —
•
Filing: —
•
Granted: 1959-04-07
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Expires: 1976-04-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:25
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D01; D01F; D01F4/00; D01F4/02; D06M15/01; D06M15/15; D06M16/00; D06M16/003; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/842
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
72 words
A MODIFIED PROTEIN FIBER COMPRISING A PROTEIN FIBER HAVING CHEMICALLY COMBINED THEREWITH ABOUT FROM 0.1 TO 25% OF ITS WEIGHT OF A DISCARBOXYLIC ACID DIAZIDE, PRODUCED BY REACTING SAID PROTEIN FIBER WITH SAID DICARBOXYLIC ACID DIAZIDE AT A TEMPERATURE ABOUT FROM 0 TO 100* C., SAID MODIFIED PROTEIN FIBER EXHIBITING DECREASED DEGREE OF SUPERCONTRACTION, DECREASED TENDENCY TO SHRINK, AND INCREASED RESISTANCE OF ALKALIS AND ACIDS, SAID DICARBOXYLIC ACID DIAZDE HAVING THE FORMULA
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) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |