Patent US2902391A successfully refreshed from Google Patents.
US2902391A
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US
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Process for improving the properties of regenerated cellulose fibrous material wherein said material is treated while still in the gel state
Assignee: Courtaulds Inc
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Filing: 1957-01-23
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Granted: 1959-09-01
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Expires: 1977-01-23
Abstract
No abstract record available.
Inventors
- 👤 George C Daul
- 👤 Harold F Wise
- 👤 Wharton John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:01
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/55; D01; D01D; D01D10/00; D01D10/04; D01D10/049; D01F; D01F2/00; D01F2/06; D06M13/00; D06M13/10; D06M13/137; D06M15/39; D06M15/423
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A METHOD FOR IMPREGNATING REGENERATED CELLULOSE FIBROUS MATERIAL WITH A HEAT HARDENABLE RESINOUS MATERIAL WHICH COMPRISES TREATING THE FIBROUS MATERIAL WHILE IT IS STILL IN THE GEL STATE, AND BEFORE IT HAS EVER BEEN DRIED SUFFICIENTLY TO CONVERT IT FROM THE GEL STATE, WITH AN AQUEOUS LIQUID CONTAINING A HEAT HARDENABLE RESINOUS MATERIAL HAVING A MOLECULAR WEIGHT BETWEEN 100 AND 1000 AND THEN MECHANICALLY REDUCING THE LIQUID CONTENT OF THE TREATED FIBER TO LESS THAN THE NORMAL WATER IMBIBITION VALUE OF THE FIBER IN THE GEL STATE.
Claim 2
Independent Claim
87 words
A METHOD FOR IMPREGNATING REGENERATED CELLULOSE FIBROUS MATERIAL WITH A HEAT HARDENABLE RESINOUS MATERIAL WHICH COMPRISES TREATING THE FIBROUS MATERIAL WHILE IT IS STILL IN THE GEL STATE, AND BEFORE IT HAS EVER BEEN DRIED SUFFICIENTLY TO CONVERT IT FROM THE GEL STATE, WITH AN AQUEOUS LIQUID CONTAINING A HEAT HARDENABLE RESINOUS MATERIAL HAVING A MOLECULAR WEIGHT BETWEEN 100 AND 1000 AND THEN MECHANICALLY REDUCING THE LIQUID CONTENT OF THE TREATED FIBER TO LESS THAN THE NORMAL WATER IMBIBITION VALUE OF THE FIBER IN THE GEL STATE.
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) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |