US3065191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disulpho-1-amino-4-(oxy-, thio-, or aminosubstituted-monohalogenotriazinylamino-aryl-or arylazo-amino) anthraquinone dyestuffs
Assignee: Imperial Chemical Industries Ltd
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Filing: 1958-07-18
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Granted: 1962-11-20
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Expires: 1978-07-18
Abstract
No abstract record available.
Inventors
- 👤 Heslop Robert Norman
- 👤 Reece Charles Hugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:00
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/04; C09B62/06; C09B62/08; C09B62/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
DYESTUFFS WHICH, IN THE FORM OF THEIR FREE ACIDS, ARE REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
14 words
DYESTUFFS WHICH, IN THE FORM OF THEIR FREE ACIDS, ARE REPRESENTED BY THE FORMULA:
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) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |