US3567451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive compositions and elements using diels-alder adducts of quinolizinium salt derivatives
Assignee: Eastman Kodak Co
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Filing: 1967-06-14
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Granted: 1971-03-02
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Expires: 1987-06-14
Abstract
Abstract PHOTOSENSITIVE COMPOSITIONS AND ELEMENTS COMPRISING DIELS-ALDER ADDUCTS HAVING GENERIC FORMULA: 2,3-(-D-CO-),10-V,10-W,11-Y,11-Z-1,4-DIHYDRO- 1,4-ETHANOQUINOLIZINIUM X(-) WHERE XO IS AN ANION; D REPRESENTS THE ATOMS NECESSARY TO FORM A 5 OR 6 MEMBERED RING, SAID ATOMS IN D CONTAINING AN -CO- OR -C(=N N)- GROUP, EACH OF V, W, Y AND Z SEPARATELY BEING HYDROGEN, ALKYL, ARYL, CYANO, ALKYLTHIO, ALKOXY, DIALKYLAMINO OR ARALKYL, PROVIDED NO MORE THAN ONE OF V, W, Y AND Z IS CYANO; Y AND Z WHEN TAKEN TOGETHER BEING ALKYLENEDIOXY OR V, W, Y AND Z WHEN TAKEN TOGETHER BEING THE ATOMS OR CHEMICAL BONDS NECESSARY TO FORM A 5 OR 6 MEMBERED FUSED RING.
Inventors
- 👤 Douglas G Borden
- 👤 Donald L Fields
- 👤 Jerry B Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:20
CPC Classifications
C; C07; C07D; C07D455/00
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |