US3133059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper and nickel phthalocyanine dyestuffs having a mono- and di-halosubstituted triazine ring
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1962-03-02
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Granted: 1964-05-12
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Expires: 1982-03-02
Abstract
No abstract record available.
Inventors
- 👤 Clark Peter Frederick
- 👤 Howard Harold Thompson
- 👤 Wardleworth James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:06
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
PHTHALOCYANINE DYESTUFFS OF THE FORMULA:
Claim 2
Dependent Claim
5 words
PHTHALOCYANINE DYESTUFFS OF 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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |