US2964520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insoluble dyestuffs of the monohalogeno-triazine-amino alkylene amino-azobenzene series
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1959-04-09
•
Granted: 1960-12-13
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Expires: 1979-04-09
Abstract
No abstract record available.
Inventors
- 👤 Baker Ronald
- 👤 Hadfield Harry Rose
- 👤 Johnson Eric Leslie
- 👤 Stephen William Elliot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:55
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/04; C09B62/08; C09B62/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
WATER-INSOLUBLE DYESTUFFS OF THE FORMULA:
Claim 2
Dependent Claim
5 words
WATER-INSOLUBLE DYESTUFFS OF THE FORMULA:
References Cited (Backward Citations)
US2873269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |