US2794754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of textile materials
Assignee: Shell Development Co
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Filing: 1956-04-30
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Granted: 1957-06-04
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Expires: 1976-04-30
Abstract
No abstract record available.
Inventors
- 👤 Carl W Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:54
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/55; C; C08; C08L; C08L61/00; C08L61/20; C08L63/00; D06M15/39; D06M15/423; Y; Y10; Y10S; Y10S8/00; Y10S8/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A PROCESS FOR TREATING TEXTILE FABRICS TO RENDER THEM CREASE AND SHRINK RESISTANT WHICH COMPRISES IMPREGNATING THE TEXTILE FABRIC WITH AN AQUEOUS MEDIUM CONTAINING A SATURATED MONOMERIC POLYEPOXIDE HAVING AN EPOXY EQUIVALENCY PER 100 GRAMS BETWEEN .4 AND 2.0 A POLYMETHYLOLSUBSTITUTED NITROGEN COMPOUND, SAID POLYEPOXIDE MAKING UP FROM 15% TO 95% BY WEIGHT OF THE MIXTURE OF POLYEPOXIDE AND POLYMETHYLOL-SUBSTITUTED NITROGEN COMPOUND, AND ACID-ACTING EPOXY CURING AGENT, AND HEATING THE RESULTING IMPREGNATED FABRIC TO A TEMPERATURE ABOVE 100*C. FOR A SHORT PERIOD.
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) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |