Patent US2709655A successfully refreshed from Google Patents.
US2709655A
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Diazotype photoprinting material
Assignee: GAF Chemicals Corp
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Filing: 1952-06-28
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Granted: 1955-05-31
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Expires: 1972-06-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A DIAZOTYPE PHOTOPRINTING MATERIAL COMPRISING A BASE MATERIAL HAVING A DRIED PRECOAT OF FROM 1 TO 3 PARTS OF ALUMINA PIGMENT HAVING A PARTICLE SIZE RANGE OF UP TO 10 MICRONS AND 1 PART OF A FILM-FORMING LPOPHILLIC BASICTO-AMPHOTERIC NITROGENOUS BINDER, THE SURFACE THEREOF BEING SENSITIZED WITH A LIGHT-SENSITIVE DIAZO COMPOUND AND AN AZO COUPING COMPONENT.
Claim 2
Dependent Claim
56 words
A DIAZOTYPE PHOTOPRINTING MATERIAL COMPRISING A BASE MATERIAL HAVING A DRIED PRECOAT OF FROM 1 TO 3 PARTS OF ALUMINA PIGMENT HAVING A PARTICLE SIZE RANGE OF UP TO 10 MICRONS AND 1 PART OF A FILM-FORMING LPOPHILLIC BASICTO-AMPHOTERIC NITROGENOUS BINDER, THE SURFACE THEREOF BEING SENSITIZED WITH A LIGHT-SENSITIVE DIAZO COMPOUND AND AN AZO COUPING COMPONENT.
References Cited (Backward Citations)
GB318511A
Cited
US2566709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |