US3093441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shrinkproofing wool with interpolymers
Assignee: Individual
•
Filing: 1961-05-10
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Granted: 1963-06-11
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Expires: 1981-05-10
Abstract
No abstract record available.
Inventors
- 👤 Robert E Whitfield
- 👤 Lowell A Miller
- 👤 William L Wasley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:04
CPC Classifications
D; D06; D06M; D06M23/00; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS FOR SHRINKPROOFING WOOL WITHOUT SIGNIFICANT IMPAIRMENT OF ITS HAND WHICH COMPRISES SERIALLY IMPREGNATING WOOL WITH TWO SOLUTIONS, ONE SOLUTION CONTAINING A DIAMINE IN A FIRST SOLVENT, THE OTHER SOLUTION CONTAINING AT LEAST TWO MEMBERS OF THE GROUP CONSISTING OF DIACID CHLORIDES, BISCHLOROFORMATES, AND DIISOCYANATES IN A SECOND SOLVENT, SAID FIRST AND SECOND SOLVENTS BEING SUBSTANTIALLY IMMISCIBLE WITH ONE ANOTHER.
Claim 2
Dependent Claim
61 words
A PROCESS FOR SHRINKPROOFING WOOL WITHOUT SIGNIFICANT IMPAIRMENT OF ITS HAND WHICH COMPRISES SERIALLY IMPREGNATING WOOL WITH TWO SOLUTIONS, ONE SOLUTION CONTAINING A DIAMINE IN A FIRST SOLVENT, THE OTHER SOLUTION CONTAINING AT LEAST TWO MEMBERS OF THE GROUP CONSISTING OF DIACID CHLORIDES, BISCHLOROFORMATES, AND DIISOCYANATES IN A SECOND SOLVENT, SAID FIRST AND SECOND SOLVENTS BEING SUBSTANTIALLY IMMISCIBLE WITH ONE ANOTHER.
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) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |