US3142668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyestuffs having an azo, anthraquinone, nitro, or phthalocyanine chromophoric radical and a triazine ring having a 5-to 6-memberedheterocyclic-ring thio substituent
Assignee: Imperial Chemical Industries Ltd
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Filing: 1960-06-29
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Granted: 1964-07-28
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Expires: 1980-06-29
Abstract
No abstract record available.
Inventors
- 👤 Rattee Ian Durham
- 👤 Waite Frederick Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:40
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/14; D06P3/148; C; C09; C09B; C09B62/00; C09B62/02; C09B62/20; D06P3/58; D06P3/60; D06P3/66; D06P3/663
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
DYESTUFFS OF THE FORMULA:
Claim 2
Dependent Claim
4 words
DYESTUFFS OF THE FORMULA:
References Cited (Backward Citations)
US2950165A
Cited
US2795576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |