US3455897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble reactive metal-complex azo dyestuffs containing halogeno-s-triazine or pyrimidine groups
Assignee: Imperial Chemical Industries Ltd
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Filing: 1966-03-10
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Granted: 1969-07-15
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Expires: 1986-03-10
Abstract
No abstract record available.
Inventors
- 👤 Ian Knowles Barben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:31
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/4401; C09B62/4422; C09B62/002; C09B62/006; C09B62/012; C09B62/02; C09B62/022; C09B62/026; C09B62/032; C09B62/4403; C09B62/4411; C09B62/4416
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3297678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |