US2807545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of applying a diazotype photoprinting material to a base and the resultant article
Assignee: AB Dick Co
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Filing: 1952-07-18
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Granted: 1957-09-24
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Expires: 1972-07-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:42
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A DIAZOTYPE PHOTOPRINTING MATERIAL HAVING A BASE CARRING A SINGLE LIGHT SENSITIVE LAYER COMPRISING A LIGHT SENSITIVE DIAZONIUM COMPOUND, A COUPLING COMPONENT, A FINELY DIVIDED WAX AND A SURFACE ACTIVE DISPERSING AGENT CAPABLE OF DISPERSING SAID WAX IN WATER, THE AMOUNT OF WAX RANGING FROM ABOUT 1 TO 28% BY WEIGHT OF THE TOTAL SOLIDS OF SAID SENSITIVE LAYER.
Claim 2
Dependent Claim
59 words
A DIAZOTYPE PHOTOPRINTING MATERIAL HAVING A BASE CARRING A SINGLE LIGHT SENSITIVE LAYER COMPRISING A LIGHT SENSITIVE DIAZONIUM COMPOUND, A COUPLING COMPONENT, A FINELY DIVIDED WAX AND A SURFACE ACTIVE DISPERSING AGENT CAPABLE OF DISPERSING SAID WAX IN WATER, THE AMOUNT OF WAX RANGING FROM ABOUT 1 TO 28% BY WEIGHT OF THE TOTAL SOLIDS OF SAID SENSITIVE LAYER.
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) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |