US3049445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shrinkproofing wool-containing textiles with polyepoxides and polyamides in the pressence of a reducing agent
Assignee: Individual
•
Filing: 1961-03-23
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Granted: 1962-08-14
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Expires: 1981-03-23
Abstract
No abstract record available.
Inventors
- 👤 Lundgren Harold Palmer
- 👤 Jr Clay E Pardo
- 👤 Robert E Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:12
CPC Classifications
C; C09; C09D; C09D177/00; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/55; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2402
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE PROCESS OF SHRINKPROOFING A WOOL-CONTAINING TEXTILE WITHOUT SIGNIFICANT IMPAIRMENT OF ITS HAND WHICH COMPRISES IMPREGNATING THE TEXTILE WITH A DISPERSION OF A POLYEPOXIDE CONTAINING AT LEAST TWO EPOXY GROUPS PER MOLECULE AND A POLYAMIDE OF A POLYAMINE AND A POLYCARBOXYLIC ACID, SAID IMPREGANTION BEING CONDUCTED IN THE PRESENCE OF A REDUCING AGENT WHICH IN AN AQUEOUS MEDIUM PROVIDES AN ION SELECTED FROM THE GROUP CONSISTING OF SULPHINATE, SULPHOXYLATE, SULPHITE, BISULPHITE, THIOSULPHATE AND HYDROSULPHITE, SAID REDUCING AGENT BEING SUPPLIED IN AN AMOUNT SUFFICIENT TO ENHANCE ABSORPTION OF THE POLYEPOXIDE AND POLYAMIDE ON THE FIBERS OF THE TEXTTILES BUT INSUFFICIENT TO DAMAGE THE SAID FIBERS.
Claim 2
Dependent Claim
104 words
THE PROCESS OF SHRINKPROOFING A WOOL-CONTAINING TEXTILE WITHOUT SIGNIFICANT IMPAIRMENT OF ITS HAND WHICH COMPRISES IMPREGNATING THE TEXTILE WITH A DISPERSION OF A POLYEPOXIDE CONTAINING AT LEAST TWO EPOXY GROUPS PER MOLECULE AND A POLYAMIDE OF A POLYAMINE AND A POLYCARBOXYLIC ACID, SAID IMPREGANTION BEING CONDUCTED IN THE PRESENCE OF A REDUCING AGENT WHICH IN AN AQUEOUS MEDIUM PROVIDES AN ION SELECTED FROM THE GROUP CONSISTING OF SULPHINATE, SULPHOXYLATE, SULPHITE, BISULPHITE, THIOSULPHATE AND HYDROSULPHITE, SAID REDUCING AGENT BEING SUPPLIED IN AN AMOUNT SUFFICIENT TO ENHANCE ABSORPTION OF THE POLYEPOXIDE AND POLYAMIDE ON THE FIBERS OF THE TEXTTILES BUT INSUFFICIENT TO DAMAGE THE SAID FIBERS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |