US3143540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo dyes from aminoisothiazoles
Assignee: Eastman Kodak Co
•
Filing: 1962-09-12
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Granted: 1964-08-04
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Expires: 1982-09-12
Abstract
No abstract record available.
Inventors
- 👤 Ronald H Meen
- 👤 William H Moore
- 👤 Joseph B Dickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:13
CPC Classifications
C; C07; C07D; C07D275/00; C07D275/02; C07D275/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
MONOAZO COMPOUNDS HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
6 words
MONOAZO COMPOUNDS HAVING THE GENERAL 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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |