US2776668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and preparations for the permanent dyeing of keratinous material
Assignee: Parbel of Florida Inc
•
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
2026-11-01 01:00
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.
References Cited (Backward Citations)
US1917101A
Cited
US2201929A
Cited
US2577710A
Cited
US2405166A
Cited
US2501184A
Cited
US2464281A
Cited
US2418664A
Cited
US2610941A
Cited
US2653121A
Cited
US2643211A
Cited
AT171725B
Cited
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 |