US3168442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions and methods of dyeing human hair with nitro-p-phenylenediamines
Assignee: P&G Hair Care Holding Inc
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Filing: 1964-06-12
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Granted: 1965-02-02
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Expires: 1984-06-12
Abstract
No abstract record available.
Inventors
- 👤 Walter H Brunner
- 👤 Halasz Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:41
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/418; A61Q; A61Q5/00; A61Q5/06; A61Q5/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A COMPOSITION FOR DYEING LIVING HUMAN HAIR COMPRISING AN AQUEOUS SOLUTION OF A TINCTORIALLY EFFECTIVE QUANTITY OF A P-PHENYLENE DIAMINE REPRESENTED BY THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
25 words
A COMPOSITION FOR DYEING LIVING HUMAN HAIR COMPRISING AN AQUEOUS SOLUTION OF A TINCTORIALLY EFFECTIVE QUANTITY OF A P-PHENYLENE DIAMINE REPRESENTED BY THE FOLLOWING FORMULA:
References Cited (Backward Citations)
GB741334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |