US2829071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of wool containing textiles
Assignee: Shell Development Co
•
Filing: 1954-04-26
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Granted: 1958-04-01
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Expires: 1974-04-26
Abstract
No abstract record available.
Inventors
- 👤 Carl W Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:11
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/55
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS FOR TREATING FABRICS CONTAINING AT LEAST 40% WOOL TO REDUCE THEIR TENDENCY TO SHRINK AND TO IMPROVE THEIR WATER REPELLANCY WHICH COMPRISES IMPREGNATING THE WOOL-CONTAINING FABRIC WITH AN AQUEOUS MEDIUM CONTAINING A POLYETHER POLYEPOXIDE OF THE GROUP CONSISTING OF GLYCIDYL POLYETHER OF POLYHYDRIC ALCOHOLS AND GLYCIDYL POLYETHER OF POLYHYDRIC PHENOLS, SAID GLYCIDYL ETHERS HAVING AN EPOXIDE EQUIVALENCY GREATER THAN 1.1 AND AN AMINE CATALYST AND SUBJECTING THE IMPREGNATED FABRIC TO AN ELEVATED TEMPERATURE TO CURE THE POLYETHER POLYEPOXIDE IN THE FIBERS OF THE FABRIC.
Claim 2
Dependent Claim
86 words
A PROCESS FOR TREATING FABRICS CONTAINING AT LEAST 40% WOOL TO REDUCE THEIR TENDENCY TO SHRINK AND TO IMPROVE THEIR WATER REPELLANCY WHICH COMPRISES IMPREGNATING THE WOOL-CONTAINING FABRIC WITH AN AQUEOUS MEDIUM CONTAINING A POLYETHER POLYEPOXIDE OF THE GROUP CONSISTING OF GLYCIDYL POLYETHER OF POLYHYDRIC ALCOHOLS AND GLYCIDYL POLYETHER OF POLYHYDRIC PHENOLS, SAID GLYCIDYL ETHERS HAVING AN EPOXIDE EQUIVALENCY GREATER THAN 1.1 AND AN AMINE CATALYST AND SUBJECTING THE IMPREGNATED FABRIC TO AN ELEVATED TEMPERATURE TO CURE THE POLYETHER POLYEPOXIDE IN THE FIBERS OF THE FABRIC.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |