Patent US2516931A successfully refreshed from Google Patents.
US2516931A
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Diazotype layers containing resorcinol mono-ethers
Assignee: GAF Chemicals Corp
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Filing: 1946-08-07
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Granted: 1950-08-01
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Expires: 1966-08-07
Abstract
No abstract record available.
Inventors
- 👤 Glahn William H Von
- 👤 Lester N Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58; F; F16; F16L; F16L9/00; F16L9/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
AS NEW PRODUCTS, LIGHT-SENSITIVE LAYERS ON A SUITABLE BASE CONTAINING A SUITABLE LIGHT-SENSITIVE DIAZO COMPOUND AND AN AZO COUPLING COMPONENT SELECTED FROM THE CLASS REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
28 words
AS NEW PRODUCTS, LIGHT-SENSITIVE LAYERS ON A SUITABLE BASE CONTAINING A SUITABLE LIGHT-SENSITIVE DIAZO COMPOUND AND AN AZO COUPLING COMPONENT SELECTED FROM THE CLASS REPRESENTED BY THE FORMULA:
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) | 1953-07-31 | 1954-01-30 | 1954-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-31 | 1958-01-30 | 1958-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-31 | 1962-01-30 | 1962-08-01 | $7700.00 | Window Closed / Lapsed |