Patent US2232449A successfully refreshed from Google Patents.
Patent US2148920A successfully refreshed from Google Patents.
US2148920A
Expired / Lapsed
US
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Process for producing compounds of the azole series
Assignee: General Aniline Works Inc
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Filing: 1937-02-25
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Granted: 1939-02-28
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Expires: 1957-02-25
Abstract
No abstract record available.
Inventors
- 👤 Zerweck Werner
- 👤 Schwamberger Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:42
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07D263/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-02-27 | 1942-08-29 | 1943-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-27 | 1946-08-29 | 1947-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-27 | 1950-08-29 | 1951-02-28 | $7700.00 | Window Closed / Lapsed |