US3726685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive composition comprising light-sensitive copolyester
Assignee: Eastman Kodak Co
•
Filing: 1971-11-17
•
Granted: 1973-04-10
•
Expires: 1991-11-17
Abstract
Abstract THERE IS DESCRIBED A NOVEL GROUP OF LIGHT-SENSITIVE COPOLYESTERS PREPARED BY CONDENSING AT LEAST ONE DIHYDROXY COMPOUND WITH A MIXTURE OF DIACIDS COMPRISING MORE THAN 70 AND LESS THAN 95 MOLE PERCENT OF A DIACID HAVING THE FORMULA: R=CH-CH=C(-COOH)2 WHERE R IS AN ALKYLIDENE, ARALKYLIDENE OR HETEROCYCLIC GROUP AND LESS THAN 30 BUT MORE THAN 5 MOLE PERCENT OF A NON-LIGHT-SENSITIVE AROMATIC DIACID.
Inventors
- 👤 Villeneuve Y De
- 👤 G Phlipot
- 👤 S Michiels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:23
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; C; C08; C08F; C08F283/00; C08F283/01
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |