Patent US2857372A successfully refreshed from Google Patents.
US2857372A
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Benzothiazole azo isonicotinic acid compounds
Assignee: Eastman Kodak Co
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Filing: 1954-11-04
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Granted: 1958-10-21
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Expires: 1974-11-04
Abstract
No abstract record available.
Inventors
- 👤 James M Straley
- 👤 Ralph R Giles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:28
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/34; C09B29/36; C09B29/3604; C09B29/3617; C09B29/3621; C09B29/3626; C09B29/3634
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
THE MONOAZO COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF THE MONOAZO COMPOUNDS AND THEIR METAL COMPLEXES CONTAINING A METAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, COBALT, COPPER, IRON MANGANESE, NICKEL AND VANADIUM SAID MONOAZO COMPOUNDS HAVING THE FORMULA:
Claim 2
Dependent Claim
39 words
THE MONOAZO COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF THE MONOAZO COMPOUNDS AND THEIR METAL COMPLEXES CONTAINING A METAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, COBALT, COPPER, IRON MANGANESE, NICKEL AND VANADIUM SAID MONOAZO COMPOUNDS HAVING THE FORMULA:
References Cited (Backward Citations)
US2594803A
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US2149051A
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US2068353A
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US2441612A
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US2560502A
Cited
US2662806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |