US2770519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carroting process and solution
Assignee: Individual
•
Filing: 1954-09-15
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Granted: 1956-11-13
•
Expires: 1974-09-15
Abstract
No abstract record available.
Inventors
- 👤 Elod Egon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:56
CPC Classifications
D; D06; D06L; D06L4/00; D06L4/10; D06L4/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD OF PRODUCING HAIR FELT INCLUDING THE STEP OF SUBJECTING FUR FIBERS TO THE ACTION OF A CARROTING SOLUTION CONTAINING AT LEAST ONE OXIDIZING AGENT OF THE GROUP CONSISTING OF HYDROGEN PEROXIDE AND PERSALTS IN AN AMOUNT CORRESPONDING TO NOT MORE THAN ABOUT 5 PERCENT BY VOLUME OF 100% HYDROGEN PEROXIDE, AN ACID OF THE GROUP CONSISTING OF NITRIC ACID AND HYDROCHLORIC ACID IN AN AMOUNT OF ABOUT 3 TO 10 PERCENT BY VOLUME, CALCULATED ON 100% ACID, AND FORMAMIDE IN AN AMOUNT OF ABOUT 2 TO 10 PERCENT BY VOLUME.
Claim 2
Independent Claim
92 words
A METHOD OF PRODUCING HAIR FELT INCLUDING THE STEP OF SUBJECTING FUR FIBERS TO THE ACTION OF A CARROTING SOLUTION CONTAINING AT LEAST ONE OXIDIZING AGENT OF THE GROUP CONSISTING OF HYDROGEN PEROXIDE AND PERSALTS IN AN AMOUNT CORRESPONDING TO NOT MORE THAN ABOUT 5 PERCENT BY VOLUME OF 100% HYDROGEN PEROXIDE, AN ACID OF THE GROUP CONSISTING OF NITRIC ACID AND HYDROCHLORIC ACID IN AN AMOUNT OF ABOUT 3 TO 10 PERCENT BY VOLUME, CALCULATED ON 100% ACID, AND FORMAMIDE IN AN AMOUNT OF ABOUT 2 TO 10 PERCENT BY VOLUME.
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) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |