US2759950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyestuffs of the phthalocyanine series
Assignee: BASF SE
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Filing: 1951-12-01
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Granted: 1956-08-21
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Expires: 1971-12-01
Abstract
No abstract record available.
Inventors
- 👤 Tartter Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:42
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/08; C09B47/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PHTHALOCYANINE COMPOUND SELECTED FROM THE CLASS CONSISTING OF OTHERWISE UNSUBSTITUTED, HALOMETHYL SUBSTITUTED, AND MERCAPTOMETHYL SUBSTITUTED METAL-PHTHALOCYANINES AND METAL-FREE PHTHALOCYANINES, AND CHARACTERIZED BY BEARING IN THE PHENYLENE NUCLEI OF THE FUNDAMENTAL PHTHALOCYANINE COMPLEX FROM ONE TO TWO RADICALS OF THE TYPE -CH2-S-R-X, WHEREIN R STANDS FOR A RADICAL SELECTED FROM THE CLASS CONSISTING OF LOWER ALKYLENE, PHENYLENE AND NAPHTHYLENE RADICALS AND X FOR A GROUP SELECTED FROM THE CLASS CONSISTING OF CARBOXYLIC ACID, CARBOXYLIC ACID ESTER, CARBOXYLIC ACID AMIDE, CYANO, SULFONIC ACID AND SULFONIC ACID AMIDE GROUPS.
Claim 2
Dependent Claim
87 words
A PHTHALOCYANINE COMPOUND SELECTED FROM THE CLASS CONSISTING OF OTHERWISE UNSUBSTITUTED, HALOMETHYL SUBSTITUTED, AND MERCAPTOMETHYL SUBSTITUTED METAL-PHTHALOCYANINES AND METAL-FREE PHTHALOCYANINES, AND CHARACTERIZED BY BEARING IN THE PHENYLENE NUCLEI OF THE FUNDAMENTAL PHTHALOCYANINE COMPLEX FROM ONE TO TWO RADICALS OF THE TYPE -CH2-S-R-X, WHEREIN R STANDS FOR A RADICAL SELECTED FROM THE CLASS CONSISTING OF LOWER ALKYLENE, PHENYLENE AND NAPHTHYLENE RADICALS AND X FOR A GROUP SELECTED FROM THE CLASS CONSISTING OF CARBOXYLIC ACID, CARBOXYLIC ACID ESTER, CARBOXYLIC ACID AMIDE, CYANO, SULFONIC ACID AND SULFONIC ACID AMIDE GROUPS.
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) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |