Patent US2776668A successfully refreshed from Google Patents.
US2776668A
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Method and preparations for the permanent dyeing of keratinous material
Assignee: Parbel of Florida Inc
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Filing: 1951-06-28
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Granted: 1957-01-08
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Expires: 1971-06-28
Abstract
No abstract record available.
Inventors
- 👤 William E Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:36
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/10; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/46; D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/30; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
THE METHOD FOR THE PERMANENT DYEING OF KERATINOUS MATERIAL, WHICH COMPRISES TREATING THE MATERIAL TO BE DYED WITH A FRESHLY PREPARED AQUEOUS SOLUTION CONTAINING A QUANTITY OF A WATER SOLUBLE MERCAPTO COMPOUND OF LOW TOXICITY EQUIVALENT WITH RESPECT TO SH GROUP TO ABOUT 0.1 TO ABOUT 6% BY WEIGHT OF THE SOLUTION OF THIOGLYCOLIC ACID AND, AS SOLE COLORING AGENT, ABOUT 0.033 TO ABOUT 6.2% BY WEIGHT OF THE SOLUTION OF A DYESTUFF OF THE GROUP CONSISTING OF THE EXT. D & C, D & C, AND F D & C CERTIFIED, COLORS AND MIXTURES THEREOF, THE SOLUTION HAVING A PH VALUE BETWEEN ABOUT 6.6 AND ABOUT 11.3, THEN WASHING THE DYED MATERIAL WITH AN AQUEOUS MEDIUM AND DRYING THE SAME.
Claim 2
Independent Claim
121 words
THE METHOD FOR THE PERMANENT DYEING OF KERATINOUS MATERIAL, WHICH COMPRISES TREATING THE MATERIAL TO BE DYED WITH A FRESHLY PREPARED AQUEOUS SOLUTION CONTAINING A QUANTITY OF A WATER SOLUBLE MERCAPTO COMPOUND OF LOW TOXICITY EQUIVALENT WITH RESPECT TO SH GROUP TO ABOUT 0.1 TO ABOUT 6% BY WEIGHT OF THE SOLUTION OF THIOGLYCOLIC ACID AND, AS SOLE COLORING AGENT, ABOUT 0.033 TO ABOUT 6.2% BY WEIGHT OF THE SOLUTION OF A DYESTUFF OF THE GROUP CONSISTING OF THE EXT. D & C, D & C, AND F D & C CERTIFIED, COLORS AND MIXTURES THEREOF, THE SOLUTION HAVING A PH VALUE BETWEEN ABOUT 6.6 AND ABOUT 11.3, THEN WASHING THE DYED MATERIAL WITH AN AQUEOUS MEDIUM AND DRYING THE SAME.
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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) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |