US2822272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light sensitive diazotype material
Assignee: GAF Chemicals Corp
•
Filing: 1954-02-10
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Granted: 1958-02-04
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Expires: 1974-02-10
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Kosalek
- 👤 Jr John Sulich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:46
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A LIGHT SENSITIVE COMPOSITION FOR DIAZO TYPE MATERIALS COMPRISING A COMPATIBLE AQUEOUS DISPERSION OF A LIGHT SENSITIVE DIAZONIUM COMPOUND, A WATER INSOLUBLE POLYMER OF A VINYL ESTER SELECTED FROM THE CLASS CONSISTING OF THOSE WHILE ARE CATIONIC AND NON-IONIC AND FINELY DIVIDED SILICA.
Claim 2
Dependent Claim
43 words
A LIGHT SENSITIVE COMPOSITION FOR DIAZO TYPE MATERIALS COMPRISING A COMPATIBLE AQUEOUS DISPERSION OF A LIGHT SENSITIVE DIAZONIUM COMPOUND, A WATER INSOLUBLE POLYMER OF A VINYL ESTER SELECTED FROM THE CLASS CONSISTING OF THOSE WHILE ARE CATIONIC AND NON-IONIC AND FINELY DIVIDED SILICA.
References Cited (Backward Citations)
US2405523A
Cited
US2522771A
Cited
US2566709A
Cited
US2611763A
Cited
US2662013A
Cited
GB702294A
Cited
FR1049725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |