US2927110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of azomethines of 5-nitro-2-formyl furan with hydrazine compounds
Assignee: Warner Chilcott Pharmaceuticals Inc
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Filing: 1958-01-23
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Granted: 1960-03-01
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Expires: 1978-01-23
Abstract
No abstract record available.
Inventors
- 👤 Gever Gabriel
- 👤 Charles J O'keefe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:46
CPC Classifications
C; C07; C07D; C07D405/00; C07D405/02; C07D405/12; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C07D233/80; C07D263/00; C07D263/02; C07D263/08; C07D263/16; C07D263/18; C07D263/20; C07D263/26; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/70; C07D307/71; C07D307/72; C07D307/74; C07D307/76; C07D413/00; C07D413/02; C07D413/12; C09; C09B; C09B55/00; C09B55/002; C09B55/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
THE PROCESS OF PREPARING A NITROFURAN REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
10 words
THE PROCESS OF PREPARING A NITROFURAN REPRESENTED BY THE FORMULA:
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) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |