Patent US2961338A successfully refreshed from Google Patents.
US2961338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating wool and other fibrous materials to impart water repellency and resistance to shrinkage
Assignee: Individual
•
Filing: 1958-05-07
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Granted: 1960-11-22
•
Expires: 1978-05-07
Abstract
No abstract record available.
Inventors
- 👤 Robbart Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:20
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M13/00; D06M13/50; D06M13/51; D06M13/513; Y; Y10; Y10S; Y10S8/00; Y10S8/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE METHOD OF TREATING WOOL IN PROCESS HAVING A REGAIN IN THE EXCESS OF ABOUT 12 PERCENT ON ITS DRY WEIGHT, TO RENDER SAID WOOL WATER REPELLENT AND SHRINK RESISTANT, COMPRISING DRYING SAID WOOL UNTIL ITS REGAIN IS IN AN AMOUNT LESS THAN 10 PERCENT ON ITS DRY WEIGHT BUT AT LEAST SUFFICIENT TO REACT WITH AN ORGANO SILICON HALIDE TO RENDER SAID WOOL WATER REPELLENT, AND THEREAFTER CONTACTING SAID WOOL WITH VAPORS OF AN ORGANO SILICON HALIDE UNTIL THE WOOL IS REDERED WATER REPELLENT.
Claim 2
Independent Claim
85 words
THE METHOD OF TREATING WOOL IN PROCESS HAVING A REGAIN IN THE EXCESS OF ABOUT 12 PERCENT ON ITS DRY WEIGHT, TO RENDER SAID WOOL WATER REPELLENT AND SHRINK RESISTANT, COMPRISING DRYING SAID WOOL UNTIL ITS REGAIN IS IN AN AMOUNT LESS THAN 10 PERCENT ON ITS DRY WEIGHT BUT AT LEAST SUFFICIENT TO REACT WITH AN ORGANO SILICON HALIDE TO RENDER SAID WOOL WATER REPELLENT, AND THEREAFTER CONTACTING SAID WOOL WITH VAPORS OF AN ORGANO SILICON HALIDE UNTIL THE WOOL IS REDERED WATER REPELLENT.
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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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |