US3296008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phthalocyanine pigments
Assignee: Novartis AG
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Filing: 1963-02-26
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Granted: 1967-01-03
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Expires: 1983-02-26
Abstract
No abstract record available.
Inventors
- 👤 Pugin Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:32
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0033; C09B67/0034; C09B67/0032; C09B67/0035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A MICROCRYSTALLINE COMPOSITION STABLE TO AROMATIC SOLVENTS WHICH CONSISTS ESSENTIALLY OF (A) MICROCRYSTALLINE METAL-FREE PHTHALOCYANINE IN THE B-FORM, AND (B) AS STABILIZING AGENT, 10 TO 45% OF A PARTIALLY HALOGENATED METAL-PHTHALOCYANINE OF THE A-FORM, THE HALOGEN OF WHICH HAS AN ATOMIC NUMBER RANGING FROM 9 TO 35 AND THE METAL OF WHICH HAS AN ATOMIC NUMBER RANGING FROM 27 TO 29 INCLUSIVE, SAID STABILIZING AGENT BEING PRESENT IN SUCH AMOUNTS THAT AT LEAST 0.08% BY WEIGHT OF THE TOTAL COMPOSITION CONSISTS OF HALOGEN; AND AT LEAST ABOUT 2% BY WEIGHT OF SAID STABILIZING AGENT CONSISTS OF HALOGEN.
Claim 2
Dependent Claim
97 words
A MICROCRYSTALLINE COMPOSITION STABLE TO AROMATIC SOLVENTS WHICH CONSISTS ESSENTIALLY OF (A) MICROCRYSTALLINE METAL-FREE PHTHALOCYANINE IN THE B-FORM, AND (B) AS STABILIZING AGENT, 10 TO 45% OF A PARTIALLY HALOGENATED METAL-PHTHALOCYANINE OF THE A-FORM, THE HALOGEN OF WHICH HAS AN ATOMIC NUMBER RANGING FROM 9 TO 35 AND THE METAL OF WHICH HAS AN ATOMIC NUMBER RANGING FROM 27 TO 29 INCLUSIVE, SAID STABILIZING AGENT BEING PRESENT IN SUCH AMOUNTS THAT AT LEAST 0.08% BY WEIGHT OF THE TOTAL COMPOSITION CONSISTS OF HALOGEN; AND AT LEAST ABOUT 2% BY WEIGHT OF SAID STABILIZING AGENT CONSISTS OF HALOGEN.
References Cited (Backward Citations)
US2826589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |