US2795584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon soluble phthalocyanines
Assignee: GAF Chemicals Corp
•
Filing: 1953-07-17
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Granted: 1957-06-11
•
Expires: 1973-07-17
Abstract
No abstract record available.
Inventors
- 👤 Tellis A Martin
- 👤 David I Randall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:24
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A HYDROCARBON-SOLUBLE PHTHALOCYANINE SELECTED FROM THE GROUP CONSISTING OF METAL AND METAL-FREE PHTHALOCYANINES CONTAINING FROM 6 TO 16 AMINOMETHYL GROUPS AS NUCLEAR SUBSTITUENTS OF PENDANT ARYL NUCLEI ATTACHED TO PHENYLENE NUCLEI OF THE FUNDAMENTAL PHTHALOCYAMINE NUCLEUS, EACH OF SAID AMINOMETHYL GROUPS HAVING NO MORE THAN 1 HYDROGEN ATOM ATTACHED TO THE NITROGEN ATOM THEREOF, AND WHEREIN THE OTHER RADICALS ATTACHED TO THE AMINOMETHYL GROUP CONTAIN NO WATER-SOLUBILIZING GROUPS, AND AT LEAST 1 OF SAID RADICAL CONTAINS AT LEAST 4 CARBON ATOMS.
Claim 2
Dependent Claim
81 words
A HYDROCARBON-SOLUBLE PHTHALOCYANINE SELECTED FROM THE GROUP CONSISTING OF METAL AND METAL-FREE PHTHALOCYANINES CONTAINING FROM 6 TO 16 AMINOMETHYL GROUPS AS NUCLEAR SUBSTITUENTS OF PENDANT ARYL NUCLEI ATTACHED TO PHENYLENE NUCLEI OF THE FUNDAMENTAL PHTHALOCYAMINE NUCLEUS, EACH OF SAID AMINOMETHYL GROUPS HAVING NO MORE THAN 1 HYDROGEN ATOM ATTACHED TO THE NITROGEN ATOM THEREOF, AND WHEREIN THE OTHER RADICALS ATTACHED TO THE AMINOMETHYL GROUP CONTAIN NO WATER-SOLUBILIZING GROUPS, AND AT LEAST 1 OF SAID RADICAL CONTAINS AT LEAST 4 CARBON ATOMS.
References Cited (Backward Citations)
US2414374A
Cited
US2542328A
Cited
US2430052A
Cited
FR1029457A
Cited
US2547972A
Cited
US2706199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |