US2944869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing keratinous material with ortho-diphenols
Assignee: L'Oréal SA
•
Filing: 1958-01-17
•
Granted: 1960-07-12
•
Expires: 1978-01-17
Abstract
No abstract record available.
Inventors
- 👤 Kalopissis Gregoire
- 👤 Ghilardi Giuliana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:48
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/34; A61K8/347; A61K8/36; A61K8/368; A61K8/40; A61K8/44; A61Q; A61Q5/00; A61Q5/10; D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/30; D06P3/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A PROCESS FOR DYEING HAIR AND OTHER KERATINOUS MATERIALS WHICH COMPRISES APPLYING THERETO AN AQUEOUS SOLUTION CONSISTING OF AT LEAST ONE ORTHODIPHENOL OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
26 words
A PROCESS FOR DYEING HAIR AND OTHER KERATINOUS MATERIALS WHICH COMPRISES APPLYING THERETO AN AQUEOUS SOLUTION CONSISTING OF AT LEAST ONE ORTHODIPHENOL OF THE GENERAL FORMULA:
References Cited (Backward Citations)
US2539202A
Cited
GB745144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |