Patent US3816614A successfully refreshed from Google Patents.
US3816614A
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Hair bleaching compositions and process
Assignee: Procter and Gamble Co
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Filing: 1971-08-05
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Granted: 1974-06-11
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Expires: 1991-08-05
Abstract
Abstract HAIR BLEACHING COMPOSITIONS CONTAINING BARBITURIC ACID, CERTAIN DERIVATIVES OF BARBITURIC ACID OR CERTAIN SALTS OF BARBARUTIC ACID AND DERIVATIVES THEREOF, AND A PEROXYGEN COMPOUND AS ESSENTIAL COMPONENTS, SAID COMPOSITIONS HAVING A PH IN A RANGE OF FROM ABOUT 8 TO ABOUT 11, AND HAIR BLEACHING PROCESS.
Inventors
- 👤 E Zeffren
- 👤 R Knohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:03
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/494; A61K8/4953; A61Q; A61Q5/00; A61Q5/08; Y; Y10; Y10S; Y10S424/00; Y10S424/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |