US2805159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for the production of diazotype
Assignee: —
•
Filing: 1953-03-02
•
Granted: 1957-09-03
•
Expires: 1973-03-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:04
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE METHOD FOR PREPARING A DIAZOTYPE PHOTOPRINTING MATERIAL WHICH COMPRISES COATING AN ABSORBENT BASE WITH AN AQUEOUS DISPERSION OF FINELY DIVIDED SILICA HAVING A PARTICLE SIZE OF COLLOIDAL TO ABOUT 5 MICRONS AND SELECTED FINELY DIVIDED SUBSTANTIALLY WATER-INSOLUBLE RESIN HAVING A MAXIMUM PARTICLE SIZE OF ABOUT 0.1 MICRON AND SELECTED FROM THE GROUP CONSISTING OF POLYSTYRENE RESINS, POLYACRYLIC RESINS, AND POLYVINYL RESINS, DRYING THE RESULTING WET-COATED BASE,COATING THE RESULTING DRY COATED BASE WITH A LIGHT-SENSITIVE DIAZO COMPOUND IN AQUEOUS MEDIUM, AND DRYING THE RESULTING PRODUCT.
Claim 2
Independent Claim
85 words
THE METHOD FOR PREPARING A DIAZOTYPE PHOTOPRINTING MATERIAL WHICH COMPRISES COATING AN ABSORBENT BASE WITH AN AQUEOUS DISPERSION OF FINELY DIVIDED SILICA HAVING A PARTICLE SIZE OF COLLOIDAL TO ABOUT 5 MICRONS AND SELECTED FINELY DIVIDED SUBSTANTIALLY WATER-INSOLUBLE RESIN HAVING A MAXIMUM PARTICLE SIZE OF ABOUT 0.1 MICRON AND SELECTED FROM THE GROUP CONSISTING OF POLYSTYRENE RESINS, POLYACRYLIC RESINS, AND POLYVINYL RESINS, DRYING THE RESULTING WET-COATED BASE,COATING THE RESULTING DRY COATED BASE WITH A LIGHT-SENSITIVE DIAZO COMPOUND IN AQUEOUS MEDIUM, AND DRYING THE RESULTING PRODUCT.
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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) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |