Patent US3781360A successfully refreshed from Google Patents.
US3781360A
Expired / Lapsed
US
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2-polyfluoroloweralkylamino benzophenones
Assignee: Merck Sharp & Dohme LLC
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Filing: 1972-05-05
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Granted: 1973-12-25
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Expires: 1992-05-05
Abstract
Abstract THIS INVENTION RELATES TO 2-POLYFLUOROLOWERALKYLAMINO BENZOPHENONES OF MATTER USEFUL AS INTERMEDIATES IN THE PREPARATION OF 2-OXO-1,3-DIHYDRO-2H-1,4-BENZODIAZEPINES, AND THE N-N-OXIDES THEREOF, HAVING A POLYFLUOROLOWERALKYL RADICAL ATTACHED AT THE 1-POSITION THEREOF AND TO THE METHODS FOR MAKING AND USING SUCH NOVEL CHEMICAL INTERMEDIATES.
Inventors
- 👤 J Topliss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:37
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07C; C07C309/00; C07C309/63; C07C309/64; C07C309/65; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/36; C07D213/38; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08G59/245
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |