US3348946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-aqueous sil ver halide photographic emulsion processing
Assignee: IMO Industries Inc
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Filing: 1964-07-20
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Granted: 1967-10-24
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Expires: 1984-07-20
Abstract
No abstract record available.
Inventors
- 👤 Viron V Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:20
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/24; G03C8/26; G03C8/28; G03C1/00; G03C1/005; G03C1/06; G03C1/42; G03C5/00; G03C5/26; G03C5/261; G03C5/38; G03C5/39; G03C8/02; G03C8/04; G03C8/06; G03C8/40; G03C8/4006; G03D; G03D9/00; G03D9/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A NON-AQUEOUS PROCESS FOR DEVELOPING AND STABILIZING A PHOTOGRAPHIC IMAGE COMPRISING THE STEPS OF: EXPOSING A LOW SPEED PHOTOSENSITIVE SILVER HALIDE EMULSION DISPOSED ON A SHEET TO LIGHT FOR THE FORMATION OF A LATENT IMAGE, APPLYING A DEVELOPING AGENT TO THE EXPOSED EMULSION TO RENDER THE LATENT IMAGE VISIBLE AND THEREAFTER, PROCESSING THE EMULSION BY APPLYING A MIXTURE OF A POLYHDRIC ALCOHOL AND A STABILIZING AGENT SELECTED FROM THE GROUP CONSISTING OF POTASSIUM THIOSULFATE, POTASSIUM THIOCYANATE, BENZENE THIOSULFONATE SALTS, THIOGLYCEROL, THIOUREA AND SALTS OF MERCAPTOACETIC ACID TO THE DEVELOPED EMULSION TO STABILIZE THE IMAGE RECORDED THEREIN.
Claim 2
Dependent Claim
96 words
A NON-AQUEOUS PROCESS FOR DEVELOPING AND STABILIZING A PHOTOGRAPHIC IMAGE COMPRISING THE STEPS OF: EXPOSING A LOW SPEED PHOTOSENSITIVE SILVER HALIDE EMULSION DISPOSED ON A SHEET TO LIGHT FOR THE FORMATION OF A LATENT IMAGE, APPLYING A DEVELOPING AGENT TO THE EXPOSED EMULSION TO RENDER THE LATENT IMAGE VISIBLE AND THEREAFTER, PROCESSING THE EMULSION BY APPLYING A MIXTURE OF A POLYHDRIC ALCOHOL AND A STABILIZING AGENT SELECTED FROM THE GROUP CONSISTING OF POTASSIUM THIOSULFATE, POTASSIUM THIOCYANATE, BENZENE THIOSULFONATE SALTS, THIOGLYCEROL, THIOUREA AND SALTS OF MERCAPTOACETIC ACID TO THE DEVELOPED EMULSION TO STABILIZE THE IMAGE RECORDED THEREIN.
References Cited (Backward Citations)
US3186843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |