Patent US2671006A successfully refreshed from Google Patents.
US2671006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating wool to render it nonfelting
Assignee: Kroy Unshrinkable Wools Ltd
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Filing: 1948-04-19
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Granted: 1954-03-02
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Expires: 1968-04-19
Abstract
No abstract record available.
Inventors
- 👤 John H Mclauchlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:49
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/07; D06M11/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS OF SHRINKPROOFING WOOL WHICH COMPRISES BRINGING WOOL INTO CONTACT WITH AN AQUEOUS HYPOCHLORITE ION CONTAINING SOLUTION HAVING AN AVAILABLE CHLORINE CONTENT OF FROM ABOUT 0.035% TO ABOUT 0.09%, A PH OF FROM ABOUT 2.2 TO ABOUT 3.5 AND A TEMPERATURE OF FROM ABOUT 4* C. TO ABOUT 24* C., MAINTAINING THE SOLUTION WITHIN SAID LIMITS CONTINUOUSLY BY ADDING AQUEOUS HYPOCHLORITE AND ACID TO COMPENSATE FOR LOSSES DUE TO REACTION WITH WOOL WHILE THE WOOL IS IN CONTACT WITH THE SOLUTION, AND REMOVING THE SOLUTION FROM THE WOOL AFTER A TREATMENT OF FROM ABOUT 30 SECONDS TO ABOUT 70 SECONDS.
Claim 2
Dependent Claim
101 words
A PROCESS OF SHRINKPROOFING WOOL WHICH COMPRISES BRINGING WOOL INTO CONTACT WITH AN AQUEOUS HYPOCHLORITE ION CONTAINING SOLUTION HAVING AN AVAILABLE CHLORINE CONTENT OF FROM ABOUT 0.035% TO ABOUT 0.09%, A PH OF FROM ABOUT 2.2 TO ABOUT 3.5 AND A TEMPERATURE OF FROM ABOUT 4* C. TO ABOUT 24* C., MAINTAINING THE SOLUTION WITHIN SAID LIMITS CONTINUOUSLY BY ADDING AQUEOUS HYPOCHLORITE AND ACID TO COMPENSATE FOR LOSSES DUE TO REACTION WITH WOOL WHILE THE WOOL IS IN CONTACT WITH THE SOLUTION, AND REMOVING THE SOLUTION FROM THE WOOL AFTER A TREATMENT OF FROM ABOUT 30 SECONDS TO ABOUT 70 SECONDS.
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) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |