Patent US2488094A successfully refreshed from Google Patents.
US2488094A
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Diimidazoles and process of making same
Assignee: BASF Schweiz AG
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Filing: 1945-03-09
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Granted: 1949-11-15
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Expires: 1965-03-09
Abstract
No abstract record available.
Inventors
- 👤 Graenacher Charles
- 👤 Ackermann Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:47
CPC Classifications
C; C07; C07D; C07D405/00; C07D405/14; C07D235/00; C07D235/02; C07D235/04; C07D235/06; C07D235/08; C07D235/12; C07D235/18; C07D235/20; D; D06; D06L; D06L4/00; D06L4/60; D06L4/686
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) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |