Patent US3076707A successfully refreshed from Google Patents.
US3076707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat developable copy sheet and compositions useful therefor
Assignee: Nashua Corp
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Filing: 1959-04-22
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Granted: 1963-02-05
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Expires: 1979-04-22
Abstract
No abstract record available.
Inventors
- 👤 William R Lawton
- 👤 Eugene F Lopez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:56
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/61; G03C1/615; G03C1/60; Y; Y10; Y10S; Y10S430/00; Y10S430/145; Y10S436/00; Y10S436/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PHOTOSENSITIVE HEAT DEVELOPABLE COPY SHEET COMPRISING A SUPPORT CARRYING A POTENTIALLY REACTIVE PHOTOSENSITIVE AZO DYE-FORMING MATERIAL IN STABLE, UNREACTIVE CONDITION BUT REACTIVE WITH A BASIC ORGANIC AMINE TO FORM A DYE, AND A LATENT DEVELOPER IN POTENTIALLY REACTIVE ASSOCIATION WITH SAID MATERIAL, SAID LATENT DEVELOPER BEING AN ORGANIC AMINE IN COMBINATON WITH A BISPHENOL FORMING A SOLID CRYSTALINE COMPLEX WHICH IS STABLE UNDER NORMAL CONDITIONS OF TEMPERATURE AND HUMIDITY AND DISSOCIABLE AT SAID ACTIVATION TEMPERATURE TO YIELD SAID AMINE.
Claim 2
Dependent Claim
79 words
A PHOTOSENSITIVE HEAT DEVELOPABLE COPY SHEET COMPRISING A SUPPORT CARRYING A POTENTIALLY REACTIVE PHOTOSENSITIVE AZO DYE-FORMING MATERIAL IN STABLE, UNREACTIVE CONDITION BUT REACTIVE WITH A BASIC ORGANIC AMINE TO FORM A DYE, AND A LATENT DEVELOPER IN POTENTIALLY REACTIVE ASSOCIATION WITH SAID MATERIAL, SAID LATENT DEVELOPER BEING AN ORGANIC AMINE IN COMBINATION WITH UREA FORMING A SOLID INCLUSION COMPOUND WHICH IS STABLE UNDER NORMAL CONDITIONS OF TEMPERATURE AND HUMIDITY AND DISSOCIABLE AT SAID ACTIVATION TEMPERATURE TO YIELD SAID AMINE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |