US2784089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light sensitive diazotype compositions containing silica pigment
Assignee: GAF Chemicals Corp
•
Filing: 1953-09-23
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Granted: 1957-03-05
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Expires: 1973-09-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:04
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
SENSITIZING COMPOSITIONS FOR LIGHT SENSITIVE DIAZOTYPE MATERIALS COMPRISING AN AQUEOUS DISPERSION OF A LIGHT SENSITIZED DIAZONIUM COMPOUND, AN AZO DYE COUPLING COMPONENT AND A SILICA FREE FROM IRON HAVING A PARTICLE SIZE RANING FROM .015 TO 0.02 MICRON, AND OBTAINED BY RAPID HIGH TEMPERATURE DECOMPOSITION OF A SILICEOUS MATERIAL IN A GASEOUS MEDIUM.
Claim 2
Dependent Claim
53 words
SENSITIZING COMPOSITIONS FOR LIGHT SENSITIVE DIAZOTYPE MATERIALS COMPRISING AN AQUEOUS DISPERSION OF A LIGHT SENSITIZED DIAZONIUM COMPOUND, AN AZO DYE COUPLING COMPONENT AND A SILICA FREE FROM IRON HAVING A PARTICLE SIZE RANING FROM .015 TO 0.02 MICRON, AND OBTAINED BY RAPID HIGH TEMPERATURE DECOMPOSITION OF A SILICEOUS MATERIAL IN A GASEOUS MEDIUM.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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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) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |