US3629330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Components for hair dyeing compositions
Assignee: P&G Hair Care Holding Inc
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Filing: 1965-05-24
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Granted: 1971-12-21
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Expires: 1985-05-24
Abstract
Abstract A GROUP OF N-SUBSTITUTED ALKYL DERIVATIVES OF NITROAMINOBENZENES WHICH ARE CHARACTERIZED BY THE FACT THAT THE ALKYL GROUP CARRY FURTHER SUBSTITUENTS SUCH AS -O-ALKYL, -NH-CO-ALKYL, -NH-CO-HYDROXYALKYL, -NHCO-ARYL, -NHSO2-ALKYL, -NHSO2-ARYL, -NHCONH2, -NH-CO-ALKYL; -NH-C(=S)-NH2; -CO-ALKYL; -CN; -SO2-NH2; -SO2-NH-ALKYL; -SO2-NH-HYDROXYALKYL; -SO2-N(-ALKYL)-ALKYL -SO2-N(-HYROXYALKYL)-ALKYL; -SO2-N(-HYDROXYALKYL)-HYDROXYALKYL AND -SO2-ALKYL; THESE ARE USEFUL AS DYES OR DYE INTERMEDIATES THAT ARE PARTICULARLY SUITABLE FOR DYEING HAIR.
Inventors
- 👤 Frederick Brody
- 👤 Alexander Halasz
- 👤 Milos S Bil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:31
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/418; A61Q; A61Q5/00; A61Q5/06; A61Q5/065; A61Q5/10; C; C07; C07C; C07C235/00; C07C235/02; C07C235/04; C07C235/10; C07C255/00; C07C271/00; C07C271/06; C07C271/08; C07C271/10; C07C271/20; C07C275/00; C07C275/04; C07C275/06; C07C275/14; C07C335/00; C07C335/04; C07C335/06; C07C335/08
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |