Patent US2524042A successfully refreshed from Google Patents.
US2524042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing prolamine fibers with aldehyde in liquid organic medium
Assignee: Individual
•
Filing: 1948-04-20
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Granted: 1950-10-03
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Expires: 1968-04-20
Abstract
No abstract record available.
Inventors
- 👤 Croston Clarence Bradford
- 👤 Cyrid D Evans
- 👤 Leonard L Mckinney
- 👤 John C Cowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:42
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A METHOD WHICH COMPRISES TREATING A PROLAMINE SHAPED BODY WITH A MEMBER OF THE GROUP CONSISTING OF ALDEHYDES AND ALDEHYDE YIELDING COMPOUNDS IN AN INERT LIQUID ORGANIC MEDIUM, IN THE PRESENCE OF AN ACID HAVING A DISSOCIATION CONSTANT NOT LESS THAN K=1.5X10**-3, THE ACID BEING PRESENT IN A QUANTITY NOT MORE THAN 5 PERCENT BY WEIGHT OF THE ALDEHYDE AND THE INERT LIQUID ORGANIC MEDIUM, THE TOTAL WATER CONTENT RANGING FROM ZERO TO NOT MORE THAN 2% BY WEIGHT, THE TREATMENT BEING AT 75*-150*C., WASHING THE SHAPED BODY, AND DRYING IT.
Claim 2
Independent Claim
91 words
A METHOD WHICH COMPRISES TREATING A PROLAMINE SHAPED BODY WITH A MEMBER OF THE GROUP CONSISTING OF ALDEHYDES AND ALDEHYDE YIELDING COMPOUNDS IN AN INERT LIQUID ORGANIC MEDIUM, IN THE PRESENCE OF AN ACID HAVING A DISSOCIATION CONSTANT NOT LESS THAN K=1.5X10**-3, THE ACID BEING PRESENT IN A QUANTITY NOT MORE THAN 5 PERCENT BY WEIGHT OF THE ALDEHYDE AND THE INERT LIQUID ORGANIC MEDIUM, THE TOTAL WATER CONTENT RANGING FROM ZERO TO NOT MORE THAN 2% BY WEIGHT, THE TREATMENT BEING AT 75*-150*C., WASHING THE SHAPED BODY, AND DRYING IT.
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) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |