US3267116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing pigmentary copper phthalocyanine
Assignee: EIDP Inc
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Filing: 1963-06-11
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Granted: 1966-08-16
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Expires: 1983-06-11
Abstract
No abstract record available.
Inventors
- 👤 Braun Juergen Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:08
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0017; C09B67/0019
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR PRODUCING PIGMENTARY COPPER PHTHALOCYANINE EXHIBITING ENHANCED TINCTORIAL CHARACTERISTICS AND PIGMENTARY STRENGTH THROUGH THE ACID SWELLING OF A BLUE, WATER-INSOLUBLE COPPER PHTHALOCYANINE COMPOUND, WHICH COMPRISES SLURRYING A CRUDE FORM OF SAID COMPOUND IN AQUEOUS HYDROCHLORIDE ACID OF NOT LESS THAN 30% AND UP TO 40% HCL CONCENTRATION TO FORM A HYDROCHLONDE OF SAID COPPER PHTHALOCYANINE COMPOUND, AND THEN REGENERATING THE PIGMENT FROM SAID HYDROCHLORIDE BY TREATING THE SLURRIED PRODUCT WITH A PROTON ACCEPTOR SELECTED FROM THE GROUP CONSISTING OF METHANOL, ETHANOL, WATER, STEAM, AQUEOUS AMMONIA AND AQUEOUS SOLUTIONS OF ORGANIC AMINES.
Claim 2
Dependent Claim
93 words
A PROCESS FOR PRODUCING PIGMENTARY COPPER PHTHALOCYANINE EXHIBITING ENHANCED TINCTORIAL CHARACTERISTICS AND PIGMENTARY STRENGTH THROUGH THE ACID SWELLING OF A BLUE, WATER-INSOLUBLE COPPER PHTHALOCYANINE COMPOUND, WHICH COMPRISES SLURRYING A CRUDE FORM OF SAID COMPOUND IN AQUEOUS HYDROCHLORIDE ACID OF NOT LESS THAN 30% AND UP TO 40% HCL CONCENTRATION TO FORM A HYDROCHLONDE OF SAID COPPER PHTHALOCYANINE COMPOUND, AND THEN REGENERATING THE PIGMENT FROM SAID HYDROCHLORIDE BY TREATING THE SLURRIED PRODUCT WITH A PROTON ACCEPTOR SELECTED FROM THE GROUP CONSISTING OF METHANOL, ETHANOL, WATER, STEAM, AQUEOUS AMMONIA AND AQUEOUS SOLUTIONS OF ORGANIC AMINES.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |