US2665986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing colored reversal images
Assignee: Gevaert Photo Producten NV
•
Filing: 1947-08-08
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Granted: 1954-01-12
•
Expires: 1967-08-08
Abstract
No abstract record available.
Inventors
- 👤 Rott Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:15
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/04; G03C8/045; G03C8/06; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE PHOTOGRAPHIC PROCESS OF PRODUCING DYESTUFF IMAGES WHICH COMPRISES EXPOSING TO LIGHT A PHOTOGRAPHIC MATERIAL CONTAINING A LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER, AND THEN DEVELOPING SAID MATERIAL WHILE SAID LAYER IS IN CONTACT WITH A RECEPTION LAYER CONTAINING A BINDER AND APPROXIMATELY 0.5 TO 1.5 G. PER 100 G. OF THE BINDER OF A SUBSTANCE ACCELERATING REDUCTION AND FORMING NUCLEI AND SELECTED FROM THE CLASS CONSISTING OF COLLOIDAL SILVER, SULFIDES AND SUBSTANCES CONTAINING A LABILE SURFUR ATOM, IN THE PRESENCE OF A COLOR COUPLER WHICH COUPLES WITH THE OXIDATION PRODUCT OF AN AROMATIC AMINO DEVELOPER WITH A DEVELOPER CONTAINING AN AMINO-AROMATIC DEVELOPING AGENT AND A THIOSULFATE SILVER HALIDE SOLVENT.
Claim 2
Dependent Claim
109 words
THE PHOTOGRAPHIC PROCESS OF PRODUCING DYESTUFF IMAGES WHICH COMPRISES EXPOSING TO LIGHT A PHOTOGRAPHIC MATERIAL CONTAINING A LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER, AND THEN DEVELOPING SAID MATERIAL WHILE SAID LAYER IS IN CONTACT WITH A RECEPTION LAYER CONTAINING A BINDER AND APPROXIMATELY 0.5 TO 1.5 G. PER 100 G. OF THE BINDER OF A SUBSTANCE ACCELERATING REDUCTION AND FORMING NUCLEI AND SELECTED FROM THE CLASS CONSISTING OF COLLOIDAL SILVER, SULFIDES AND SUBSTANCES CONTAINING A LABILE SURFUR ATOM, IN THE PRESENCE OF A COLOR COUPLER WHICH COUPLES WITH THE OXIDATION PRODUCT OF AN AROMATIC AMINO DEVELOPER WITH A DEVELOPER CONTAINING AN AMINO-AROMATIC DEVELOPING AGENT AND A THIOSULFATE SILVER HALIDE SOLVENT.
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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) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |