Patent US2190121A successfully refreshed from Google Patents.
US3779989A
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Light-sensitive polymers containing a phenyl-diarylcyclopropene moiety,their preparation and use
Assignee: Eastman Kodak Co
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Filing: 1971-07-19
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Granted: 1973-12-18
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Expires: 1991-07-19
Abstract
Abstract A NOVEL CLASS OF LIGHT-SENSITIVE POLYMERS CONTAIN A DIARYLCYCLOPROPENE MOIETY, SUCH AS A DIARYLCYCLOPROPENIUM ION OR A DIARYLCYCLOPROPENYL GROUP, DIRECTLY ATTACHED TO A PHENYL GROUP OF A POLYMER BACKBONE. THE POLYMERS ARE USEFUL IN PREPARING PHOTOMECHANICAL IMAGES AND FOR OTHER PURPOSES.
Inventors
- 👤 D Wadsworth
- 👤 W Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:25
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; C; C08; C08F; C08F8/00
Claims Analysis
Total Claims: 0
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |