US3372030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of shortening the processing time of color photography
Assignee: Pavelle Corp
•
Filing: 1962-12-14
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Granted: 1968-03-05
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Expires: 1982-12-14
Abstract
No abstract record available.
Inventors
- 👤 Jacobson Kurt Israel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:30
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/305; G03C1/00; G03C1/005; G03C1/06; G03C1/30; G03C7/00; G03C7/30; G03C7/388; G03C7/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A METHOD OF SHORTENING THE PROCESSING TIME OF COLOR PHOTOGRAPHIC SENSITIVE MATERIAL WHICH COMPRISES, PROVIDING A MULTI-LAYER EMULSION-COATED PHOTOGRAPHIC MATERIAL IN WHICH EACH LAYER INCORPORATES CLOSESLY SPACED FINELY DISPERSED COUPLER ANC SILVER HALIDE PARTICLES IN A PHOTOGRAPHIC DISPERSION MEDIUM, EACH EMULSION LAYER BEING OF THE ORDER OF 2 MICRONS IN THICKNESS, THE RATIO OF SILVER TO DISPERSION MEDIUM IS SUBSTANTIALLY 1:1, THE RATIO OF COUPLER TO DISPERSION MEDIUM BEING SUBSTANTIALLY 1:3; EXPOSING THE MATERIAL TO FORM A LATENT IMAGE; CONVERTING THE LATENT IMAGE TO A VISIBLE IMAGE BY SUBJECTING THE EXPOSED MATERIAL FOR A BRIEF PERIOD AT A TEMPERATURE OF BETWEEN ABOUT 20*C. AND 35*C. TO THE ACTION OF A HIGHLY ALKALIE AQUEOUS SOLUTION OF A DEVELOPER SELECTED FROM THE GROUP CONSISTING OF NIDIETHYL-P-PHENYLENE DIAMINE AND SUBSTITUTED, MORE SOLUBLE DERIVATIVES THEREOF; IMMEDIATELY IMMERSING THE DEVELOPED MATERIAL FOR A BRIEF PERIOD IN A BLEACH-FIX BATH COMPRISING AN ACID SOLUTION OF A SILVER HALIDE SOLVENT AND AN ACID-STABLE FERRIC SALT OF AN ALKYLENE AMINE POLYACETIC ACID AND THEN WASHING AND DRYING THE THUS PROCESSED MATERIAL.
Claim 2
Independent Claim
173 words
A METHOD OF SHORTENING THE PROCESSING TIME OF COLOR PHOTOGRAPHIC SENSITIVE MATERIAL WHICH COMPRISES, PROVIDING A MULTI-LAYER EMULSION-COATED PHOTOGRAPHIC MATERIAL IN WHICH EACH LAYER INCORPORATES CLOSESLY SPACED FINELY DISPERSED COUPLER ANC SILVER HALIDE PARTICLES IN A PHOTOGRAPHIC DISPERSION MEDIUM, EACH EMULSION LAYER BEING OF THE ORDER OF 2 MICRONS IN THICKNESS, THE RATIO OF SILVER TO DISPERSION MEDIUM IS SUBSTANTIALLY 1:1, THE RATIO OF COUPLER TO DISPERSION MEDIUM BEING SUBSTANTIALLY 1:3; EXPOSING THE MATERIAL TO FORM A LATENT IMAGE; CONVERTING THE LATENT IMAGE TO A VISIBLE IMAGE BY SUBJECTING THE EXPOSED MATERIAL FOR A BRIEF PERIOD AT A TEMPERATURE OF BETWEEN ABOUT 20*C. AND 35*C. TO THE ACTION OF A HIGHLY ALKALIE AQUEOUS SOLUTION OF A DEVELOPER SELECTED FROM THE GROUP CONSISTING OF NIDIETHYL-P-PHENYLENE DIAMINE AND SUBSTITUTED, MORE SOLUBLE DERIVATIVES THEREOF; IMMEDIATELY IMMERSING THE DEVELOPED MATERIAL FOR A BRIEF PERIOD IN A BLEACH-FIX BATH COMPRISING AN ACID SOLUTION OF A SILVER HALIDE SOLVENT AND AN ACID-STABLE FERRIC SALT OF AN ALKYLENE AMINE POLYACETIC ACID AND THEN WASHING AND DRYING THE THUS PROCESSED MATERIAL.
References Cited (Backward Citations)
US2310226A
Cited
US2527261A
Cited
US2550617A
Cited
US2586168A
Cited
US2732316A
Cited
GB774194A
Cited
DE1051117B
Cited
GB879443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |