US2773768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive diazotype material
Assignee: Chemische Fabriek L Van der Grinten NV
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Filing: 1952-03-11
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Granted: 1956-12-11
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Expires: 1972-03-11
Abstract
No abstract record available.
Inventors
- 👤 Sanders Theodorus Pe Wilhelmus
- 👤 Wilders Johannes Henri Andreas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:32
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/54; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
LIGHT-SENSITIVE DIAZOTYPE MATERIAL COMPRISING A SUPPORT BEARING A ONE-COMPONENT DIAZO FILM LAYER WHICH IS SUITABLE FOR DEVELOPMENT WITH A THIN LAYER OF AN AQUEOUS DEVELOPER, WHEREIN THE DIAZO FILM LAYER IS A CONTINUOUS SUBSTANTIALLY DRY AND NON-STICKY LAYER OF MEASURABLE THICKNESS THAT COVERS SAID SUPPORT, CONTAINS AN ORGANIC COLLOIDAL SOLID FILM-FORMING MATERIAL, IS HYDROPHILIC AND CONTAINS SUBSTANTIALLY ENTIRELY WITHIN SAID LAYER A DIZAO COMPOUND OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
68 words
LIGHT-SENSITIVE DIAZOTYPE MATERIAL COMPRISING A SUPPORT BEARING A ONE-COMPONENT DIAZO FILM LAYER WHICH IS SUITABLE FOR DEVELOPMENT WITH A THIN LAYER OF AN AQUEOUS DEVELOPER, WHEREIN THE DIAZO FILM LAYER IS A CONTINUOUS SUBSTANTIALLY DRY AND NON-STICKY LAYER OF MEASURABLE THICKNESS THAT COVERS SAID SUPPORT, CONTAINS AN ORGANIC COLLOIDAL SOLID FILM-FORMING MATERIAL, IS HYDROPHILIC AND CONTAINS SUBSTANTIALLY ENTIRELY WITHIN SAID LAYER A DIZAO COMPOUND OF THE GENERAL FORMULA:
References Cited (Backward Citations)
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US2532126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |