US3316092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazotype material comprising a metal sulfate nitrogenous compound and polymeric anhydride
Assignee: Eugene Dietzgen Co
•
Filing: 1963-05-09
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Granted: 1967-04-25
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Expires: 1983-05-09
Abstract
No abstract record available.
Inventors
- 👤 Robert J Klimkowski
- 👤 Gerson E Beauchamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:06
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
REPRODUCTION MATERIAL WHICH COMPRISES: A SUPPORTED LAYER OF A VISIBLY HEAT-SENSITIVE COMPOSITION, SAID COMPOSITION COMPRISING A MIXTURE OF A COUPLING DIAZO COMPOUND; AN AZO COUPLING COMPONENT; A NITROGENOUS COMPOUND PRODUCING AN ALKALINE REACTION WHEN HEATED, SAID NITROGENOUS COMPOUND BEING PRESENT IN AN AMOUNT SUFFICIENT TO EFFECT COUPLING OF SAID DIAZO COMPOUND AND SAID COUPLING COMPONENT WHEN HEATED; AND A SUSPENSION OF A METAL SULFATE SELECTED FROM THE GROUP CONSISTING OF CADMIUM SULFATE, ZINC SULFATE, NICKEL SULFATE, COBALT SULFATE, ALUMINUM SALFATE, MAGNESIUM SULFATE, AND CERIC AMMONIUM SULFATE AND A LINEAR POLYMERIC ANHYDRIDE, SAID ANHYDRIDE BEING THE INTERPOLYMER OF METHYL VINYL ETHER AND MALEIC ANHYDRIDE, THE RATIO OF NITROGENOUS COMPOUND TO ANHYDRIDE BY WEIGHT BEING FROM ABOUT 1:1 TO 20:1.
Claim 2
Dependent Claim
118 words
REPRODUCTION MATERIAL WHICH COMPRISES: A SUPPORTED LAYER OF A VISIBLY HEAT-SENSITIVE COMPOSITION, SAID COMPOSITION COMPRISING A MIXTURE OF A COUPLING DIAZO COMPOUND; AN AZO COUPLING COMPONENT; A NITROGENOUS COMPOUND PRODUCING AN ALKALINE REACTION WHEN HEATED, SAID NITROGENOUS COMPOUND BEING PRESENT IN AN AMOUNT SUFFICIENT TO EFFECT COUPLING OF SAID DIAZO COMPOUND AND SAID COUPLING COMPONENT WHEN HEATED; AND A SUSPENSION OF A METAL SULFATE SELECTED FROM THE GROUP CONSISTING OF CADMIUM SULFATE, ZINC SULFATE, NICKEL SULFATE, COBALT SULFATE, ALUMINUM SALFATE, MAGNESIUM SULFATE, AND CERIC AMMONIUM SULFATE AND A LINEAR POLYMERIC ANHYDRIDE, SAID ANHYDRIDE BEING THE INTERPOLYMER OF METHYL VINYL ETHER AND MALEIC ANHYDRIDE, THE RATIO OF NITROGENOUS COMPOUND TO ANHYDRIDE BY WEIGHT BEING FROM ABOUT 1:1 TO 20:1.
References Cited (Backward Citations)
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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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |