US3589903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide,heat-developable image sheet containing mercuric ion
Assignee: 3M Co
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Filing: 1968-02-28
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Granted: 1971-06-29
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Expires: 1988-02-28
Abstract
Abstract A LIGHT-SENSITIVE HEAT-DEVELOPABLE IMAGING SHEET CONTAINING CATALYTIC AMOUNTS OF LIGHT-SENSITIVE SILVER HALIDE IN CATALYTIC ASSOCIATION WITH ORGANIC SILVER SALT OXIDATION-REDUCTION IMAGE-FORMING MEANS IS GIVEN INCREASED SPEED, STABILITY AND CONTRAST BY INCORPORATION OF MERCURIC ION.
Inventors
- 👤 Stephen P Birkeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:06
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |