US2833782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of polychloro copper phthalocyanine
Assignee: EIDP Inc
•
Filing: 1954-04-12
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Granted: 1958-05-06
•
Expires: 1974-04-12
Abstract
No abstract record available.
Inventors
- 👤 Harvey I Stryker
- 👤 Addison H Williamson
- 👤 Peter F Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:26
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0032; C09B67/0025; C09B67/0026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS OF RECOVERING PIGMENTARY POLYCHLORO COPPER PHTHALOCYANINE FROM AN ANHYDROUS REACTION MASS CONTAINING NON-PIGMENTARY POLYCHLORO COPER PHTHALOVYANINE IN ADMIXTURE WITH A METAL HALIDE OF THE GROUP CONSISTING OF ALUMINUM CHLORIDE, ALUMINUM BROMIDE AND FERRIC CHLORIDE, THE ROPORTION OF METAL HALIDE TO PIGMENT BEING NOT LESS THAN 2:1 IN MOLES, WHICH COMPRISES CONTACTING SAID REACTION MASS WITH WATER AND WITH AN INERT, WATER-IMMISCIBLE, ORGANIC DILUENT WHICH IS CAPABLE OF CYANINE PIGMENT PARTICLE, THE PROPORTION OF SAID ORGANIC CYANINE PIGMENT PARTICLE, THE PROPORTION OF SAID ORGANIC LIQUID TO PIGMENT BEING NOT LESS THAN 0.3:1 BY WEIGHT, WHEREBY TO FORM AN AQUEOUS SOLUTION O F SAID METAL HALIDE, AND SEPARATING THE PIGMENT FROM SAID AQUEOUS SOLUTION.
Claim 2
Dependent Claim
114 words
A PROCESS OF RECOVERING PIGMENTARY POLYCHLORO COPPER PHTHALOCYANINE FROM AN ANHYDROUS REACTION MASS CONTAINING NON-PIGMENTARY POLYCHLORO COPER PHTHALOVYANINE IN ADMIXTURE WITH A METAL HALIDE OF THE GROUP CONSISTING OF ALUMINUM CHLORIDE, ALUMINUM BROMIDE AND FERRIC CHLORIDE, THE ROPORTION OF METAL HALIDE TO PIGMENT BEING NOT LESS THAN 2:1 IN MOLES, WHICH COMPRISES CONTACTING SAID REACTION MASS WITH WATER AND WITH AN INERT, WATER-IMMISCIBLE, ORGANIC DILUENT WHICH IS CAPABLE OF CYANINE PIGMENT PARTICLE, THE PROPORTION OF SAID ORGANIC CYANINE PIGMENT PARTICLE, THE PROPORTION OF SAID ORGANIC LIQUID TO PIGMENT BEING NOT LESS THAN 0.3:1 BY WEIGHT, WHEREBY TO FORM AN AQUEOUS SOLUTION O F SAID METAL HALIDE, AND SEPARATING THE PIGMENT FROM SAID AQUEOUS SOLUTION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |