US3732244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,3-dioxy-2-substituted-4,4,5,5-tetrahydrocarbon substituted-delta 2-dihydro-and imidazolines
Assignee: SYVA CORP
•
Filing: 1971-03-22
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Granted: 1973-05-08
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Expires: 1991-03-22
Abstract
Abstract $2-DIHYDRO- AND IMIDAZOLINE HAVING DISUBSTITUTION IN BOTH THE 4 AND 5 POSITIONS OF THE RING, WHEREIN BOTH THE NITROGEN ATOMS IN THE RING ARE BONDED TO OXYGEN. SUB STITUTED AT THE TWO POSITION ARE HALOGEN, OXY AND OXO GROUPS. PREFERRED COMPOUNDS HAVE A NITROXIDE FUNCTIONALITY IN CONJUGATION WITH A NITRONYL FUNCTIONALITY.
Inventors
- 👤 D Boocock
- 👤 E Ullman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:55
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/04; C07D233/28; C07D233/30; C07D233/32; C07D233/38; Y; Y10; Y10T; Y10T436/00; Y10T436/24
Claims Analysis
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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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |