US2694010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive diazotype layers containing magnesium salts
Assignee: GAF Chemicals Corp
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Filing: 1951-11-20
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Granted: 1954-11-09
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Expires: 1971-11-20
Abstract
No abstract record available.
Inventors
- 👤 Botkin Carl
- 👤 Jr John Sulich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:49
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A DIAZOTYPE LIGHT-SENSITIVE MATERIAL COMPRISING ON A SUITABLE BASE A STABLIZIED LIGHT-SENSITIVE DIAZO COMPOUND AND A COUPLING COMPONENT, TOGETHER WITH ZINC CHLORIDE AND A WATER-SOLUBLE, INORGANIC MAGNESIUM SALT, THE QUANTITY OF THE MAGNESIUM SALT BEING MORE THAN TEN PER CENT (10%) AND LESS THAN FORTY PER CENT (40%) BY WEIGHT OF THE TOTAL QUANTITY OF ZINC CHLORIDE AND MAGNESIUM SALT COMBINED.
Claim 2
Dependent Claim
61 words
A DIAZOTYPE LIGHT-SENSITIVE MATERIAL COMPRISING ON A SUITABLE BASE A STABLIZIED LIGHT-SENSITIVE DIAZO COMPOUND AND A COUPLING COMPONENT, TOGETHER WITH ZINC CHLORIDE AND A WATER-SOLUBLE, INORGANIC MAGNESIUM SALT, THE QUANTITY OF THE MAGNESIUM SALT BEING MORE THAN TEN PER CENT (10%) AND LESS THAN FORTY PER CENT (40%) BY WEIGHT OF THE TOTAL QUANTITY OF ZINC CHLORIDE AND MAGNESIUM SALT COMBINED.
References Cited (Backward Citations)
US1973148A
Cited
GB284253A
Cited
GB443955A
Cited
GB571802A
Cited
US2537097A
Cited
US2541178A
Cited
US2552354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |