US2618630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitrobenzeneazo-n-trifluoroalkyl-n-hydroxyalkylaniline dye compounds
Assignee: Eastman Kodak Co
•
Filing: 1949-09-09
•
Granted: 1952-11-18
•
Expires: 1969-09-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Dickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:28
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/06; C09B29/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
THE AZO COMPOUNDS HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
7 words
THE AZO COMPOUNDS HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US2131894A
Cited
US2118661A
Cited
US2115412A
Cited
US2194927A
Cited
US2384734A
Cited
US2432393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |