US3646003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymerizable (alkoxycarbonylphenylazo) phthalocyanine dyestuffs
Assignee: Rhodiaceta SA
•
Filing: 1969-03-28
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Granted: 1972-02-29
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Expires: 1989-03-28
Abstract
Abstract PHTHALOCYANINE DYESTUFFS OF EXCELLENT FASTNESS TO LIGHT AND SOLVENTS, WHICH ARE PARTICULARLY USEFUL FOR COLOURING POLYESTERS AND POLYAMIDES IN GREEN AND BLUE SHADES, HAVE THE FORMULA: PC-(-D-AR(COOR)N)P WHERE PC IA PHTALOCYANINE NUCLEUS, D IS -O-,-S-, ALKYLENE, -CO-, OR -N=N-, AR IS AN AROMATIC RADICAL, R IS HYDROGEN ATOM OR A HYDROCARBON RADICAL AND N AND P ARE EACH 1 TO 4.
Inventors
- 👤 Bernard Lamure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:01
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/681; C09; C09B; C09B43/00; C09B47/00; C09B47/04; C09B47/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |