US3745009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic elements and light-absorbing layers
Assignee: Eastman Kodak Co
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Filing: 1970-10-19
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Granted: 1973-07-10
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Expires: 1990-10-19
Abstract
Abstract NOVEL PHOTOGRAPHIC MATERIALS COMPRISING A LIGHT-SENSITIVE LAYER AND A LIGHT-ABSORBING MATERIAL ARE DESCRIBED. THE LIGHT-ABSORBING MATERIALS COMPRISE COLORED COMPONENTS WHICH ARE DECOLORIZED BY VARIOUS FORMS OF ENERGY, SUCH AS, FOR EXAMPLE HEAT. THE NOVEL LIGHT-ABSORBING MATERIALS ARE USEFUL IN ANTIHALATION LAYERS PARTICULARLY ADAPTED FOR PHOTOTOGRAPHIC ELEMENTS DESIGNED FOR DEVELOPMENT WITH HEAT.
Inventors
- 👤 P Jenkins
- 👤 D Heseltine
- 👤 J Mee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:28
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/04; B; B41; B41M; B41M5/00; B41M5/26; B41M5/28; B41M5/286; C07D209/00; C07D209/02; C07D209/04; C07D209/08; C09; C09B; C09B23/00; C09B23/02; C09B23/04; C09B23/06; C09B23/08; C09B23/083; C09B23/086; C09B23/10; C09B23/105; C09B23/107; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/485; G03C1/72; G03C1/76; G03C1/825; G03C1/83; G03C1/832; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/09
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |