US3222176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic colour images from amino substituted phenols
Assignee: Gevaert Photo Producten NV
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Filing: 1961-10-02
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Granted: 1965-12-07
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Expires: 1981-10-02
Abstract
No abstract record available.
Inventors
- 👤 Jaeken Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:34
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/34; G03C7/346; C; C07; C07D; C07D333/00; C07D333/02; C07D333/04; C07D333/26; C07D333/30; C07D333/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A PROCESS FOR THE PRODUCTION OF PHOTOGRAPHIC COLOR IMAGES COMPRISING THE DEVELOPMENT IN A PHOTOGRAPHIC MATERIAL OF A LATENT SILVER SALT IMAGE BY MEANS OF A PRIMARY AROMATIC AMINO DEVELOPING SUBSTANCE IN THE PRESENCE OF A COLOR COUPLER TO FORM A CYAN-COLORED INDOPHENOL DYESTUFF, SAID COUPLER HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF;
Claim 2
Dependent Claim
55 words
A PROCESS FOR THE PRODUCTION OF PHOTOGRAPHIC COLOR IMAGES COMPRISING THE DEVELOPMENT IN A PHOTOGRAPHIC MATERIAL OF A LATENT SILVER SALT IMAGE BY MEANS OF A PRIMARY AROMATIC AMINO DEVELOPING SUBSTANCE IN THE PRESENCE OF A COLOR COUPLER TO FORM A CYAN-COLORED INDOPHENOL DYESTUFF, SAID COUPLER HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF;
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |