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US3586475A
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Solvent dyeing of keratinous materials with disperse dyes or azo premetallized dyes
Assignee: Colgate Palmolive Co
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Filing: 1966-11-18
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Granted: 1971-06-22
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Expires: 1986-11-18
Abstract
Abstract KERATINOUS MATERIALS SUCH AS HAIR CAN BE DYED WITH DISPERSE DYES OR AZO PREMETALLIZED DYES IN AN ALCOHOLICAQUEOUS MEDIUM WITH A SOLVENT ASSIST ADJUVANT SUCH AS LOWER ALKYL N,N-DIMETHYL AMIDES AND ALKYL N,N-N'',N''TETRAMETHYL AMIDES.
Inventors
- 👤 Gordon Trent Hewitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:32
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/42; A61Q; A61Q5/00; A61Q5/06; A61Q5/065; D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/649; D06P1/6495; D06P3/00; D06P3/02; D06P3/04; D06P3/043; D06P3/046; D06P3/30; A61K2800/00; A61K2800/40; A61K2800/42; A61K2800/43; A61K2800/432; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/92; Y10S8/924
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |