Patent US3554987A successfully refreshed from Google Patents.
US3554987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel compounds and photographic materials containing said compounds
Assignee: Eastman Kodak Co
•
Filing: 1968-08-22
•
Granted: 1971-01-12
•
Expires: 1988-08-22
Abstract
Abstract POLMERIC MATERIALS COMPRISING UNITS OF THE MONOMER: CH2=C(-R4)-COO-R5 WHERE R4 IS HYDROGEN, ALKYL OR -R6-OOC-CH2-X WHERE R6 IS ALKYLENE AND X S ALIPHATIC ACYL OR CYANO; AND R5 IS ALKYL, CYCLOALKYL, ARYL OR -R6-OOC-CH2-X WHERE R6 IS ALKYLENE AND X IS ALIPHATIC ACYL OR CYANO, PROVIDED THAT ONE AND ONLY ONE OF R4 AND R5 IS ALWAYS -R6-OOC-CH2-X IN ONE EMBODIMENT, INTERPOLYMERS COMPRISING UNITS OF THE ABOVE MONOMER PROVIDE IMPROVED PROPERTIES IN PHOTOGRAPHIC COMPOSITIONS.
Inventors
- 👤 Donald Arthur Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:49
CPC Classifications
C; C07; C07C; C07C255/00; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28; G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |