US3002003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azidophthalic anhydrides
Assignee: Eastman Kodak Co
•
Filing: 1959-10-02
•
Granted: 1961-09-26
•
Expires: 1979-10-02
Abstract
No abstract record available.
Inventors
- 👤 Stewart H Merrill
- 👤 Cornelius C Unruh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:18
CPC Classifications
C; C07; C07C; C07C247/00; C08; C08F; C08F8/00; C08F8/30; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/27; C08K5/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
AN AZIDOPHTHALIC ANHYDRIDE OF THE FORMULA:
Claim 2
Dependent Claim
6 words
AN AZIDOPHTHALIC ANHYDRIDE OF THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |