US2523889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazotypes containing dialkoxy phenols
Assignee: GAF Chemicals Corp
•
Filing: 1947-07-02
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Granted: 1950-09-26
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Expires: 1967-07-02
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
2026-10-29 23:11
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 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 CONSISTING OF THE COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
33 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 CONSISTING OF THE COMPOUNDS OF 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) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |