Patent US2694009A successfully refreshed from Google Patents.
US2694009A
Expired / Lapsed
US
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Diazo-n-sulfonate light-sensitive material
Assignee: Keuffel and Esser Co
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Filing: 1949-08-12
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Granted: 1954-11-09
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Expires: 1969-08-12
Abstract
No abstract record available.
Inventors
- 👤 Sus Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:18
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A POSITIVE WORKING HEAT DEVELOPABLE LIGHT SENSITIVE DIAZOTYPE MATERIAL COMPRISING A BASE AND A LIGHT SENSITIVE LAYER COATED THEREON, SAID LIGHT SENSITIVE LAYER COMPRISING AN AROMATIC DIAZO-N-SULFONATE OF AN N,N-DIALKYL-PPHENYLENE DIAMINE WHICH IS SUBSTITUTED IN AT LEAST ONE OF THE ORTHO POSITIONS TO THE DIAZO GROUP BY A GROUP SELECTED FROM ALKYL AND ALKOXY GROUPS, AN AZO COUPLING COMPONENT OF GREAT COUPLING ENERGY AND IN ADDITION A WATER SOLUBLE SALT OF AN AROMATIC SULFONIC ACID OF THE BENZENE AND NAPHTHALENE SERIES WHICH HAS A SULFONIC GROUP ATTACHED DIRECTLY TO AN AROMATIC RING WHICH IS SUBSTITUTED IN PARAPOSITION TO THE SULFONIC ACID GROUP BY A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF HALOGEN, ALKYL AND ALKOXY GROUPS.
Claim 2
Dependent Claim
116 words
A POSITIVE WORKING HEAT DEVELOPABLE LIGHT SENSITIVE DIAZOTYPE MATERIAL COMPRISING A BASE AND A LIGHT SENSITIVE LAYER COATED THEREON, SAID LIGHT SENSITIVE LAYER COMPRISING AN AROMATIC DIAZO-N-SULFONATE OF AN N,N-DIALKYL-PPHENYLENE DIAMINE WHICH IS SUBSTITUTED IN AT LEAST ONE OF THE ORTHO POSITIONS TO THE DIAZO GROUP BY A GROUP SELECTED FROM ALKYL AND ALKOXY GROUPS, AN AZO COUPLING COMPONENT OF GREAT COUPLING ENERGY AND IN ADDITION A WATER SOLUBLE SALT OF AN AROMATIC SULFONIC ACID OF THE BENZENE AND NAPHTHALENE SERIES WHICH HAS A SULFONIC GROUP ATTACHED DIRECTLY TO AN AROMATIC RING WHICH IS SUBSTITUTED IN PARAPOSITION TO THE SULFONIC ACID GROUP BY A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF HALOGEN, ALKYL AND ALKOXY GROUPS.
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) | 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 |