US2668112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of photographic color images
Assignee: Gevaert Photo Producten NV
•
Filing: 1951-12-15
•
Granted: 1954-02-02
•
Expires: 1971-12-15
Abstract
No abstract record available.
Inventors
- 👤 Cat Arthur Henri De
- 👤 Sevens Gerard Michiel
- 👤 Andre Emile Van Dormael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:33
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
PROCESS FOR THE PRODUCTION OF A PHOTOGRAPHIC COLAR IMAGE BY DEVELOPING A REDUCIBLE SIVLER SALT IMAGE WITH A PRIMARY AMINO AROMATIC DEVELOPING AGENT IN THE PRESENCE OF A COLOR COUPLER CORRESPONDING TO THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
35 words
PROCESS FOR THE PRODUCTION OF A PHOTOGRAPHIC COLAR IMAGE BY DEVELOPING A REDUCIBLE SIVLER SALT IMAGE WITH A PRIMARY AMINO AROMATIC DEVELOPING AGENT IN THE PRESENCE OF A COLOR COUPLER CORRESPONDING TO THE FOLLOWING FORMULA:
References Cited (Backward Citations)
US2408633A
Cited
US2396917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |