Patent US3453112A successfully refreshed from Google Patents.
US3453112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-developable diazotype material
Assignee: Bauchet and Cie Ets
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Filing: 1960-11-22
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Granted: 1969-07-01
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Expires: 1980-11-22
Abstract
No abstract record available.
Inventors
- 👤 Andre Schaeffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:43
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/61; G03C1/615
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A HEAT-DEVELOPABLE DIAZOTYPE MATERIAL COMPRISING A SUPPORT AND A COATING ON SAID SUPPORT, SAID CONSISTING ESSENTIALLY OF A DIAZONIUM COMPOUND, A COUPLING AGENT FOR SAID DIAZONIUM COMPOUND, A STABILIZER AND A DEVELOPING AGENT, SAID DEVELOPING AGENT BEING CONSTITUTED BY AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF UREAS, THIOUREAS, SULFAMIDES AND DERIVATIVES THEREOF RESULTING FROM SUBSTITUTION BY ORGANIC RADICALS, AND SAID STABILIZER BEING AT LEAST ONE ACID COMNPOUND HAVING A DISSOCIATION CONSTANT AT LEAST EQUAL TO 10-**3, AND SELECTED FROM THE GROUP CONSISTING OF NITROBIURET, DINITROBIURET AND CARBOXYLIC ACIDS CAPABLE OF BECOMING SUBSTANTIALLY LESS ACIDIC AND OF EVOLVING NH3 UPON HEATING.
Claim 2
Dependent Claim
102 words
A HEAT-DEVELOPABLE DIAZOTYPE MATERIAL COMPRISING A SUPPORT AND A COATING ON SAID SUPPORT, SAID CONSISTING ESSENTIALLY OF A DIAZONIUM COMPOUND, A COUPLING AGENT FOR SAID DIAZONIUM COMPOUND, A STABILIZER AND A DEVELOPING AGENT, SAID DEVELOPING AGENT BEING CONSTITUTED BY AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF UREAS, THIOUREAS, SULFAMIDES AND DERIVATIVES THEREOF RESULTING FROM SUBSTITUTION BY ORGANIC RADICALS, AND SAID STABILIZER BEING AT LEAST ONE ACID COMNPOUND HAVING A DISSOCIATION CONSTANT AT LEAST EQUAL TO 10-**3, AND SELECTED FROM THE GROUP CONSISTING OF NITROBIURET, DINITROBIURET AND CARBOXYLIC ACIDS CAPABLE OF BECOMING SUBSTANTIALLY LESS ACIDIC AND OF EVOLVING NH3 UPON HEATING.
References Cited (Backward Citations)
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US2657141A
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US2694009A
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US3046128A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |