Patent US4363864A successfully refreshed from Google Patents.
US4363864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colloid relief images by oxidized developer transfer
Assignee: 3M Co
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Filing: 1978-05-10
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Granted: 1982-12-14
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Expires: 1998-05-10
Abstract
Abstract An article comprising a substrate having coated on one surface thereof a first layer comprising a colloidal material capable of being tanned when contacted with oxidized silver halide developers, and overyling said first layer a second layer comprising a photographic silver halide emulsion, said emulsion containing substituted gelatin therein, said substituted gelatin being substantially resistant to tanning when contacted by said oxidized silver halide developers.
Inventors
- 👤 Robert L. Rutledge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:03
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/315
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
65 words
An article comprising a substrate having coated on one surface thereof a first layer comprising a colloidal material capable of being tanned when contacted with oxidized silver halide developers, and overlying said first layer a second layer comprising a photographic silver halide emulsion, said emulsion containing substituted gelatin therein, said substituted gelatin being substantially resistant to tanning when contacted by said oxidized silver halide developers.
Claim 2
Dependent Claim
65 words
An article comprising a substrate having coated on one surface thereof a first layer comprising a colloidal material capable of being tanned when contacted with oxidized silver halide developers, and overlying said first layer a second layer comprising a photographic silver halide emulsion, said emulsion containing substituted gelatin therein, said substituted gelatin being substantially resistant to tanning when contacted by said oxidized silver halide developers.
Claim 3
Dependent Claim
14 words
The article of claim 1 wherein said first layer contains a pigment dispersed therein.
Claim 4
Dependent Claim
13 words
The article of claim 1 wherein said photographic silver halide emulsion is negative-acting.
Claim 5
Dependent Claim
13 words
The article of claim 1 wherein said photographic silver halide emulsion is positive-acting.
Claim 6
Dependent Claim
12 words
The article of claim 1 wherein said colloidal material comprises unsubstituted gelatin.
Claim 7
Dependent Claim
11 words
The article of claim 1 wherein said colloidal material comprises casein.
Claim 8
Dependent Claim
16 words
The article of claim 1 wherein said first layer further contains a silver halide developer therein.
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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) | 1985-12-13 | 1986-06-14 | 1986-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-13 | 1990-06-14 | 1990-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-13 | 1994-06-14 | 1994-12-14 | $7700.00 | Window Closed / Lapsed |