US2532744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazotype containing as the azo component a quaternary salt of 2-methyl-6-methoxy-benzoselenazole
Assignee: GAF Chemicals Corp
•
Filing: 1945-07-04
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Granted: 1950-12-05
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Expires: 1965-07-04
Abstract
No abstract record available.
Inventors
- 👤 James M Straley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:26
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1444469A
Cited
FR695006A
Cited
US2131038A
Cited
US2186736A
Cited
US2186685A
Cited
US2288586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |