US2611697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive photographic element
Assignee: Gevaert Photo Producten NV
•
Filing: 1947-04-15
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Granted: 1952-09-23
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Expires: 1967-04-15
Abstract
No abstract record available.
Inventors
- 👤 Stevens Rene Adriaan
- 👤 Auwera Laurent Aloys Van Der
- 👤 Desire Maria Aloysius Goethem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:27
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
PHOTOGRAPHIC MATERIAL CONTAINING AT LEAST ONE LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER AND A COLORED NON-SENSITIVE LAYER INCLUDING THE REACTION PRODUCT OF A BASIC AZOMETHINE DUESTUFF, OBTAINED BY CONDENSING IN EQUIMOLAR PROPORTIONS AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF P-DIMETHLAMINOBENZALDEHYDE AND P-DIMETHYLAMINOCINNAMIC ALDEHYDE, AND ANTHRANILIC ACID, WITH METHYLENE DISALICYLIC ACID, SAID REACTION PRODUCT CORRESPONDING TO THE FOLLOWING FORMULA
Claim 2
Dependent Claim
58 words
PHOTOGRAPHIC MATERIAL CONTAINING AT LEAST ONE LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER AND A COLORED NON-SENSITIVE LAYER INCLUDING THE REACTION PRODUCT OF A BASIC AZOMETHINE DUESTUFF, OBTAINED BY CONDENSING IN EQUIMOLAR PROPORTIONS AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF P-DIMETHLAMINOBENZALDEHYDE AND P-DIMETHYLAMINOCINNAMIC ALDEHYDE, AND ANTHRANILIC ACID, WITH METHYLENE DISALICYLIC ACID, SAID REACTION PRODUCT CORRESPONDING TO THE FOLLOWING FORMULA
References Cited (Backward Citations)
US1879537A
Cited
US2282890A
Cited
US2276158A
Cited
GB539070A
Cited
US2396580A
Cited
US2336215A
Cited
US2388903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |