US2649440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2, 4-bis(methylsulfonyl)-benzeneazo-nu-hydroxyalkyl-nu-beta-cyanoethylaniline compounds
Assignee: Eastman Kodak Co
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Filing: 1951-06-30
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Granted: 1953-08-18
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Expires: 1971-06-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Dickey
- 👤 George J Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:40
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/18; C09B43/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
THE AZO COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
6 words
THE AZO COMPOUND HAVING THE FORMULA:
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) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |