US3772273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of quinoxaline
Assignee: Honeywell International Inc
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Filing: 1971-03-17
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Granted: 1973-11-13
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Expires: 1991-03-17
Abstract
Abstract NEW (2-HYDROXYHEXAFLUORO-2-PROPYL) BENZ-SUBSTITUTED BENZOHETEROCYCLIC NITROGEN COMPOUNDS USEFUL IN THE PREPARATION OF BENZOHETEROCYCLE NITROGEN COMPOUND CARBOXYLIC ACIDS AND AS HYPOTENSIVE AGENTS, AND NEW (2-HYDROXYHEXAFLUORO-2-PROPYL)3,4-DIAMINOBENZENE PRECURSOR FOR SUCH COMPOUNDS. THIS APPLICATION IS A DIVISION OF APPLICATION SER. NO. 792,130, FILED JAN. 17, 1969, NOW U.S. PAT. 3,594,418.
Inventors
- 👤 E Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:52
CPC Classifications
C; C07; C07D; C07D235/00; C07D235/02; C07D235/04; C07D235/06; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/44; C07D213/46; C07D213/50; C07D235/08; C07D235/24; C07D235/26; C07D241/00; C07D241/36; C07D241/38; C07D241/40; C07D241/42; C07D241/44; C07D249/00; C07D249/16; C07D249/18
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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |