US3799779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-desensitizable imaging sheet
Assignee: 3M Co
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Filing: 1971-09-13
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Granted: 1974-03-26
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Expires: 1991-09-13
Abstract
Abstract IMAGING SHEETS ARE PROVIDED COMPRISING A LIGHT-SENSITIVE LAYER INCLUDING (1) FILM-FORMING BINDER, (2) A REACTANT WHICH IS REACTIVE WITH A CO-REACTANT TO PROVIDE A VISIBLE CHANGE AND IS RENDERED NON-REACTIVE WITH SAID CO-REACTANT UPON DESENSITIZATION WITH EXCITED OXYGEN, AND (3) A POLYCYCLIC, AROMATIC, OXYGEN-SENSITIZING DYE.
Inventors
- 👤 M Burleigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:52
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/38235; C; C09; C09B; C09B3/00; C09B3/22; C09B3/30; C09B3/40; C09B3/44; C09B3/60; C09B3/64; C09B3/70; C09B3/74; G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C5/00; G03C5/26; G03C5/262; G03C5/56
Claims Analysis
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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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |