US3143423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New photo-resist benzoylazide compositions
Assignee: Eastman Kodak Co
•
Filing: 1962-04-02
•
Granted: 1964-08-04
•
Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 George A Reynolds
- 👤 James A Van Allan
- 👤 Douglas G Borden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:31
CPC Classifications
C; C07; C07C; C07C247/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
24 words
A FILM-FORMING LIGHT-SENSITIVE PHOTO-RESIST COMPOSITION COMPRISING A SOLUTION OF: (1) AT LEAST ONE SOLVENT-SOLUBLE LIGHT-SENSITIVE PHOTOPOLYMERIZABLE BENZOYLAZIDE SELECTED FROM THE CLASS HAVING THE FORMULA:
References Cited (Backward Citations)
US2449980A
Cited
US2695846A
Cited
US2789052A
Cited
US3092494A
Cited
US2852379A
Cited
US3062650A
Cited
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 |