Patent US4939486A successfully refreshed from Google Patents.
Patent US493330A successfully refreshed from Google Patents.
Patent US3401003A successfully refreshed from Google Patents.
US3401003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaminoanthraquinones and their use as human hair dyes
Assignee: THERACHEMIC CHEMISCH THERAPEUT
•
Filing: 1964-08-27
•
Granted: 1968-09-10
•
Expires: 1984-08-27
Abstract
No abstract record available.
Inventors
- 👤 Boosen Karl-Josef
- 👤 Reese Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:48
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/35; A61K8/355; A61Q; A61Q5/00; A61Q5/06; A61Q5/065; C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/22; C09B1/26; C09B1/264; C09B1/268; C09B1/28; C09B1/32; C09B1/50; C09B1/54; C09B1/545; D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |