US3368941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo compounds for dyeing human hair
Assignee: Therachemie Chemische Therapeutische GmbH
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Filing: 1964-08-27
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Granted: 1968-02-13
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Expires: 1984-08-27
Abstract
No abstract record available.
Inventors
- 👤 Karl-Josef Boosen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:20
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/06; A61Q5/065; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/411; A61K8/415; 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
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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) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |