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Patent US3087935A successfully refreshed from Google Patents.
US3087935A
Expired / Lapsed
US
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Process for the manufacture of copper phthalocyanines
Assignee: BASF Schweiz AG
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Filing: 1961-02-14
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Granted: 1963-04-30
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Expires: 1981-02-14
Abstract
No abstract record available.
Inventors
- 👤 Razavi Djavad
- 👤 Fioroni Walter
- 👤 Meister Hans Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:40
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS FOR THE MANUFACTURE OF COPPER PHTHALOCYANNIES WICH COMPRISES HEATING AT A TEMPERATURE WITHIN THE RANGE OF 160 TO 290*F C. A MEMBER SELECTED FROM THE GROUP CONSISTING OF PHTHALIC ANHYDRIDE AND PHTHALIMIDE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CUPRIC CHLORIDE AND CUPROUS OXIDE AND UREA IN THE PRESENCE OF AMMONIUM MOLYBDATE, WHEREIN THE MIXTURE CONTAINS A HIGH-BOILING INERT ORGANIC SOLVENT IN A PROPORTION WITHIN THE RANGE OF 10 TO 60% BY WEIGHT CALCULATED ON TH TOTAL WEIGHT OF THE REACTANTS.
Claim 2
Dependent Claim
85 words
A PROCESS FOR THE MANUFACTURE OF COPPER PHTHALOCYANNIES WICH COMPRISES HEATING AT A TEMPERATURE WITHIN THE RANGE OF 160 TO 290*F C. A MEMBER SELECTED FROM THE GROUP CONSISTING OF PHTHALIC ANHYDRIDE AND PHTHALIMIDE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CUPRIC CHLORIDE AND CUPROUS OXIDE AND UREA IN THE PRESENCE OF AMMONIUM MOLYBDATE, WHEREIN THE MIXTURE CONTAINS A HIGH-BOILING INERT ORGANIC SOLVENT IN A PROPORTION WITHIN THE RANGE OF 10 TO 60% BY WEIGHT CALCULATED ON TH TOTAL WEIGHT OF THE REACTANTS.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |