US3653907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermographic copy sheet containing 2,6,dicyclohexyl
Assignee: Nashua Corp
•
Filing: 1970-05-13
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Granted: 1972-04-04
•
Expires: 1990-05-13
Abstract
Abstract The presence of 2,6, dicyclohexyl cresol in a reducible silver salt-based thermo copy sheet improves the density and contrast of the image areas.
Inventors
- 👤 Charles H Benbrook
- 👤 Albert W Leclair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:23
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/4989
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3342623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |