US2970909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazotype materials containing coupling components for high opacity ultraviolet yellows and visually dense sepias
Assignee: GAF Chemicals Corp
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Filing: 1957-02-04
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Granted: 1961-02-07
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Expires: 1977-02-04
Abstract
No abstract record available.
Inventors
- 👤 Chester E Slimowiez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:49
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
LIGHT-SENSITIVE DIAZOTPE MATERIALS CAPABLE OF FORMING INTERMEDIATE PRINTS HAVING A HIGH OPACITY FOR UV AND A HIGH VISUAL DENSITY IN A DARK SEPIA TONE, COMPRISING A TRANSLUCENT BASE COATED WITH A LIGHT-SENSITIVE DIAZONIUM COMPOUND DERIVED FROM A P-PHENYLENEDIAMINE AND MIXTURE OF COUPLING SPEED, ONE COUPLER BEING A TIALLY THE SAME COUPLING SPEED, ONE COUPLER BEING A MONO-HYDRIC PHENOL CAPABLE OF YIELDING A DYE HIGHLY ABSORPTIVE FOR UV LIGHT AND ESSENTIALLY A SHADING DYEAND THE SECOND COUPLING COMPOUND BEING A 1-HYDROXY-3SULFAMYLNAPHTHALENE CAPABLE OF YIELDING A SHADING DYESTUFF, SAID COUPLING COMPONENT BEING SELECTED FROM THE GROUP OF COMPOUNDS HAVING THE FOLLWING FORMULA:
Claim 2
Dependent Claim
100 words
LIGHT-SENSITIVE DIAZOTPE MATERIALS CAPABLE OF FORMING INTERMEDIATE PRINTS HAVING A HIGH OPACITY FOR UV AND A HIGH VISUAL DENSITY IN A DARK SEPIA TONE, COMPRISING A TRANSLUCENT BASE COATED WITH A LIGHT-SENSITIVE DIAZONIUM COMPOUND DERIVED FROM A P-PHENYLENEDIAMINE AND MIXTURE OF COUPLING SPEED, ONE COUPLER BEING A TIALLY THE SAME COUPLING SPEED, ONE COUPLER BEING A MONO-HYDRIC PHENOL CAPABLE OF YIELDING A DYE HIGHLY ABSORPTIVE FOR UV LIGHT AND ESSENTIALLY A SHADING DYEAND THE SECOND COUPLING COMPOUND BEING A 1-HYDROXY-3SULFAMYLNAPHTHALENE CAPABLE OF YIELDING A SHADING DYESTUFF, SAID COUPLING COMPONENT BEING SELECTED FROM THE GROUP OF COMPOUNDS HAVING THE FOLLWING FORMULA:
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) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |