US2615027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing noncrystallizing copper phthalocyanine
Assignee: GAF Chemicals Corp
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Filing: 1950-09-14
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Granted: 1952-10-21
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Expires: 1970-09-14
Abstract
No abstract record available.
Inventors
- 👤 Bluemmel Francis Philipp
- 👤 Lawrence D Lytle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:07
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR THE PRODUCTION OF A NON-CRYSTALIZING, NON-FLOCCULATING COPPER PHTHALOCYANINE WHICH COMPRISES REACTING PHTHALIC ANHYDRIDE, UREA AND AS SOLE METAL DONOR COMPOUNDS, CUPROUS CHLORIDE, AND ALUMINUM CHLORIDE, THE CUPROUS CHLORIDE BEING PRESENT IN AN AMOUNT OF APPROXIMATELY 20% AND THE ALUMINUM CHLORIDE IN AN AMOUNT OF FROM 5 TO 7 1/2 OF THE AMOUNT OF PHTHALIC ANHYDRIDE, AND RECOVERING THE RESULTING PHTHALOCYANINE PIGMENT FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
68 words
A PROCESS FOR THE PRODUCTION OF A NON-CRYSTALIZING, NON-FLOCCULATING COPPER PHTHALOCYANINE WHICH COMPRISES REACTING PHTHALIC ANHYDRIDE, UREA AND AS SOLE METAL DONOR COMPOUNDS, CUPROUS CHLORIDE, AND ALUMINUM CHLORIDE, THE CUPROUS CHLORIDE BEING PRESENT IN AN AMOUNT OF APPROXIMATELY 20% AND THE ALUMINUM CHLORIDE IN AN AMOUNT OF FROM 5 TO 7 1/2 OF THE AMOUNT OF PHTHALIC ANHYDRIDE, AND RECOVERING THE RESULTING PHTHALOCYANINE PIGMENT FROM THE REACTION MIXTURE.
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) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |