Patent US3129109A successfully refreshed from Google Patents.
US3129109A
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US
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Heat-sensitive copy-sheet
Assignee: 3M Co
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Filing: 1961-09-25
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Granted: 1964-04-14
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Wesley R Workman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:25
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/323; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S430/00; Y10S430/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A HEAT-SENSITIVE COPY-SHEET PRODUCT USEFUL IN THE COPYING OF DIFFERENTIALLY RADIATION-ABSORPTIVE GRAPHIC ORIGINALS BY THE THERMOGRAPHIC COPYING PROCESS, SAID COPY-SHEET INCLUDING A HEAT-SENSITIVE LAYER CONTAINING IN UNIFORM INTIMATE JUXTAPOSITION INTER-REACTANT IMAGE-FORMING COMPONENTS CONSISTING OF A NORMALLY STABLE 2-AMINOTHIAZOLE HAVING THE STRUCTURE
Claim 2
Dependent Claim
41 words
A HEAT-SENSITIVE COPY-SHEET PRODUCT USEFUL IN THE COPYING OF DIFFERENTIALLY RADIATION-ABSORPTIVE GRAPHIC ORIGINALS BY THE THERMOGRAPHIC COPYING PROCESS, SAID COPY-SHEET INCLUDING A HEAT-SENSITIVE LAYER CONTAINING IN UNIFORM INTIMATE JUXTAPOSITION INTER-REACTANT IMAGE-FORMING COMPONENTS CONSISTING OF A NORMALLY STABLE 2-AMINOTHIAZOLE HAVING THE STRUCTURE
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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |