US2845362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of protein fibers
Assignee: Virginia Carolina Chemical Corp
•
Filing: 1956-12-03
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Granted: 1958-07-29
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Expires: 1976-12-03
Abstract
No abstract record available.
Inventors
- 👤 Jenkins Herschel Sidney
- 👤 Jr John R Magee
- 👤 Jr Herbert Seth Morgan
- 👤 Bernard M Saffian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:53
CPC Classifications
D; D01; D01F; D01F4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A PROCESS FOR THE PRODUCTION OF PROLAMINE FIBERS COMPRISING THE STEPS OF DISSOLVING THE PROLAMINE IN AN AQUEOUS ALKALINE SOLUTION AND SPINNING THE RESULTING SOLUTION INTO AN ACIDIC COAGULATING BATH THE IMPROVEMENT WHICH CONSISTS IN INCORPORATING FROM ABOUT 0.01% TO ABOUT 2.5% OF A WATER-SOLUBLE IONIZABLE SALT OF THE GROUP CONSISTING OF SODIUM SULFIDE, SODIUM SULFATE, AMMONIUM SULFATE, SODIUM SULFITE, SODIUM CHLORIDE, CALCIUM CHLORIDE, ALUMINIUM SULFATE, SODIUM HYDROSULFITE, AMMONIUM CHLORIDE AND SODIUM THIOGLYCOLATE BASED UPON THE WEIGHT OF THE PROLAMINE IN SAID SOLUTION.
Claim 2
Dependent Claim
84 words
IN A PROCESS FOR THE PRODUCTION OF PROLAMINE FIBERS COMPRISING THE STEPS OF DISSOLVING THE PROLAMINE IN AN AQUEOUS ALKALINE SOLUTION AND SPINNING THE RESULTING SOLUTION INTO AN ACIDIC COAGULATING BATH THE IMPROVEMENT WHICH CONSISTS IN INCORPORATING FROM ABOUT 0.01% TO ABOUT 2.5% OF A WATER-SOLUBLE IONIZABLE SALT OF THE GROUP CONSISTING OF SODIUM SULFIDE, SODIUM SULFATE, AMMONIUM SULFATE, SODIUM SULFITE, SODIUM CHLORIDE, CALCIUM CHLORIDE, ALUMINIUM SULFATE, SODIUM HYDROSULFITE, AMMONIUM CHLORIDE AND SODIUM THIOGLYCOLATE BASED UPON THE WEIGHT OF THE PROLAMINE IN SAID SOLUTION.
References Cited (Backward Citations)
US2429214A
Cited
US2521704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |