US2615026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing noncrystallizing copper phthalocyanine
Assignee: GAF Chemicals Corp
•
Filing: 1950-09-14
•
Granted: 1952-10-21
•
Expires: 1970-09-14
Abstract
No abstract record available.
Inventors
- 👤 Lawrence D Lytle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:39
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0032
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A PROCESS FOR THE PRODUCTION OF A NON-CRYSTALLIZING, NON-FLOCCULATING COPPER PHTHALOCYANINE WHICH CONSISTS IN ADDING COPPER PHTHALOCYANINE TO A MELT OF A MEMBER OF THE GROUP CONSISTING OF ANHYDROUS ALUMINUM CHLORIDE AND A MIXTURE OF ANHYDROUS ALUMINUM CHLORIDE AND SODIUM CHLORRIDE, AGITATING AND HEATING THE MIXTURE TO FROM 140* C. TO 180* C. AND RECOVERING THE COPPER PHTHALOCYANINE.
Claim 2
Dependent Claim
58 words
A PROCESS FOR THE PRODUCTION OF A NON-CRYSTALLIZING, NON-FLOCCULATING COPPER PHTHALOCYANINE WHICH CONSISTS IN ADDING COPPER PHTHALOCYANINE TO A MELT OF A MEMBER OF THE GROUP CONSISTING OF ANHYDROUS ALUMINUM CHLORIDE AND A MIXTURE OF ANHYDROUS ALUMINUM CHLORIDE AND SODIUM CHLORRIDE, AGITATING AND HEATING THE MIXTURE TO FROM 140* C. TO 180* C. AND RECOVERING THE COPPER PHTHALOCYANINE.
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 |