US2739868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of dyeing peroxide-bleached wool
Assignee: FMC Corp
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Filing: 1951-01-13
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Granted: 1956-03-27
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Expires: 1971-01-13
Abstract
No abstract record available.
Inventors
- 👤 Edward S Shanley
- 👤 Hans O Kauffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:46
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/14; D06L; D06L4/00; D06L4/10; D06L4/30; D06L4/70; D06P1/00; D06P1/0024; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/93; Y10S8/931
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
44 words
THE METHOD OF CONTROLLING THE HUE AND VARIATIONS IN SHADES IN THE DYEING OF PEROXIDE BLEACHED WOOL WHICH COMPRISES FIRST APPLYING TO THE WOOL 0.1% TO 1% BASED ON WOOL OF A REDUCING AGENT CAPABLE OF DECOMPOSING HYDROGEN PEROXIDE AND THEREAFTER DYEING THE WOOL.
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) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |