US2565935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for insolubilizing vegetable seed globulin and phospho-protein artificial filamentary products
Assignee: Imperial Chemical Industries Ltd
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Filing: 1949-05-23
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Granted: 1951-08-28
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Expires: 1969-05-23
Abstract
No abstract record available.
Inventors
- 👤 William E Tetlow
- 👤 Robin H K Thomson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:12
CPC Classifications
D; D01; D01F; D01F4/00; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0481; Y; Y10; Y10S; Y10S425/00; Y10S425/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A METHOD OF INSOLUBILIZING ARTIFICIAL FILAMENTARY PRODUCTS OBTAINED BY SPINNING AQUEOUS ALKALINE SOLUTIONS OF PROTEINS SELECTED FROM THE GROUP CONSISTING OF VEGETABLE SEED GLOBULINS AND PHOPHO-PROTEINS INTO ACIDIFIED SALINE COAGULATING BATHS WHICH COMPRISES FIRST RELAXING THE FILAMENTARY PRODUCTS BY IMPREGNATING THE SAME WITH AN AQUEOUS SOLUTION CONTAINING NOT LESS THAN 240 GRAMS OF SODIUM CHLORIDE PER LITRE OF SOLUTION AND HAVING A PH OF BETWEEN 4 AND 7, AND BEING SUBSTANTIALLY FREE OF FORMALDEHYDE, THEREAFTER IMPREGNATING THE THUS TREATED FILAMENTARY PRODUCTS AT A TEMPERATURE NOT EXCEEDING 80* C. WITH AN AQUEOUS FORMALDEHYDE SOLUTION CONTAINING NOT LESS THAN 240 GRAMS OF SODIUM CHLORIDE PER LITRE AND HAVING A PH OF BETWEEN 4 AND 7 AND THEREAFTER IMPREGNATING THE FILAMENTARY PRODUCTS AT A TEMPERATURE BETWEEN 70* AND 98* C. IN A STRONGLY ACIDIFIED, AQUEOUS FORMALDEHYDE SOLUTION CONTAINING, PER LITRE OF SOLUTION, BETWEEN 250 AND 325 GRAMS OF-SULPHURIC ACID AND BETWEEN 370 AND 480 GRAMS OF SODIUM SULPHATE.
Claim 2
Independent Claim
155 words
A METHOD OF INSOLUBILIZING ARTIFICIAL FILAMENTARY PRODUCTS OBTAINED BY SPINNING AQUEOUS ALKALINE SOLUTIONS OF PROTEINS SELECTED FROM THE GROUP CONSISTING OF VEGETABLE SEED GLOBULINS AND PHOPHO-PROTEINS INTO ACIDIFIED SALINE COAGULATING BATHS WHICH COMPRISES FIRST RELAXING THE FILAMENTARY PRODUCTS BY IMPREGNATING THE SAME WITH AN AQUEOUS SOLUTION CONTAINING NOT LESS THAN 240 GRAMS OF SODIUM CHLORIDE PER LITRE OF SOLUTION AND HAVING A PH OF BETWEEN 4 AND 7, AND BEING SUBSTANTIALLY FREE OF FORMALDEHYDE, THEREAFTER IMPREGNATING THE THUS TREATED FILAMENTARY PRODUCTS AT A TEMPERATURE NOT EXCEEDING 80* C. WITH AN AQUEOUS FORMALDEHYDE SOLUTION CONTAINING NOT LESS THAN 240 GRAMS OF SODIUM CHLORIDE PER LITRE AND HAVING A PH OF BETWEEN 4 AND 7 AND THEREAFTER IMPREGNATING THE FILAMENTARY PRODUCTS AT A TEMPERATURE BETWEEN 70* AND 98* C. IN A STRONGLY ACIDIFIED, AQUEOUS FORMALDEHYDE SOLUTION CONTAINING, PER LITRE OF SOLUTION, BETWEEN 250 AND 325 GRAMS OF-SULPHURIC ACID AND BETWEEN 370 AND 480 GRAMS OF SODIUM SULPHATE.
References Cited (Backward Citations)
GB597497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |