Patent US3826656A successfully refreshed from Google Patents.
US3826656A
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Fogged,direct-positive silver halide emulsion sensitized with a cyanine dye containing heterocylic nitrogen atom substituted with an-or group
Assignee: Eastman Kodak Co
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Filing: 1973-04-02
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Granted: 1974-07-30
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Expires: 1993-04-02
Abstract
Abstract A CLASS OF ENERGY-SENSITIVE COMPOUNDS CONTAINING HETEROCYCLIC NITROGEN ATOMS SUBSTITUTED WITH AN -OR GROUP FRAGMENT UNDER THE INFLUENCE OF VARIOUS FORMS OF ENERGY TO FORM A DYE BASE, A PROTON AND AN ALDEHYDE, THESE MATERIALS BEING USEFUL IN IMAGE REPRODUCTION.
Inventors
- 👤 P Jenkins
- 👤 D Heseltine
- 👤 J Mee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:49
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/09; B; B41; B41M; B41M5/00; B41M5/26; B41M5/28; B41M5/286; C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/08; C07D471/00; C07D471/02; C07D471/04; C09; C09B; C09B23/00; C09B23/02; C09B23/04; C09B23/06; C09B23/08; C09B23/083; C09B23/086; C09B23/10; C09B23/105; C09B23/107; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/485; G03C1/48515; G03C1/48523; G03C1/4853; G03C1/72; G03C1/76; G03C1/825; G03C1/83; G03C1/832
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |