US3764361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phthalocyanines
Assignee: PRODUITS CHIMIQUES UGINE KUKLMANN
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Filing: 1971-11-22
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Granted: 1973-10-09
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Expires: 1991-11-22
Abstract
Abstract PHTHALOCYANINE COMPOUNDS OF THE FORMULA: PC(CH2-X-A)N (I) IN WHICH PC REPRESENTS A PHTHALOCYANINE RESIDUE, X REPRESENTS AN OXYGEN OR SULPHUR ATOM, A REPRESENTS AN ARYL RADICAL WHICH IS UNSUBSTITUTED OR SUBSTITUTED BY AT LEAST ONE ALKYL GROUP HAVING UP TO 6 CARBON ATOMS AND N REPRESENTS A WHOLE NUMBER FROM 1 TO 8; PIGMENT MIXTURES CONTAINING SUCH COMPOUNDS; PROCESS FOR THE STABILISATION OF PHTHALOCYANINE PIGMENTS WHICH COMPRISES INCORPORATING THEREIN AT LEAST ONE COMPOUND OF FORMULA I; AND PAINTS, LACQUERS, ENAMELS, INKS AND PLASTIC MATERIALS COLOURED BY MEANS OF A PHTHALOCYANIE PIGMENT MIXTURE CONTAINING A COMPOUND OF FORMULA I.
Inventors
- 👤 L Cabut
- 👤 J Kienzle
- 👤 M Huille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:11
CPC Classifications
C; C09; C09B; C09B68/00; C09B68/40; C09B68/42; C09B47/00; C09B47/04; C09B47/08; C09B47/12; C09B67/00; C09B67/0033; C09B67/0034; C09B67/0035
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |