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US3740412A Expired / Lapsed US ⏱️ 0.0 years remaining

Imidazoline-3-oxide-1-oxyl derivatives

Assignee: SYNVAR ASS
•
Filing: 1970-04-08
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Granted: 1973-06-19
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Expires: 1990-04-08
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Abstract

Abstract DIHYDROIMIDAAZOLES, TETRAHYDROMINIDAZOLES AND TAUTOMERIC MIXTURES OF DIHYDROIMIDAZOLES AND TETRAHYDROIMIDAZOLES HAVING TERITARY CARBON ATOMS IN THE NUMBER 4 AND NUMBER 5 POSITIONS OF THE HYDROMIDAZOLE RING, AND HAVING ATTACHED AT THE C2 POSITION OF THE IMIDAZOLE RING A RADICAL SELECTED FROM THE GROUP CONSISTING OF -NR1R2, =NR2 --NR2-,--S-, --SR1, AND --OR1, WHEREIN R1 IS HYDROGEN, ALKYL, ARYL, ALKENYL, ALKYNYL, ALKYMYL CYCLOAALKYL AND SUBSTITUTED DERATIVES THEREOF, AND R2 IS HYDROGEN, ALKYL, ARYL ALKENYL, ALKYNYL, CYCLOAKYL, -CO-R1, -CO-N(-R1)-R2, -COO-R1, -CO-S-R1, -SO2-R1, -C(-R1)=N-R1, -C(=N-R1)-N(-R1)2, -C(-O-R1)=N-R1, -C(-S-R1)=N-R1, -COO-CO-N(-C2H5)2 AND SUBSTITUTED DERIVATIVES THEREOF. THERE ARE ONE OR TWO OXIDIZED NITROGEN ATOMS IN THE RING IN THE FORM OF OXIDES OR HYDROXIDES.

Inventors

  • 👤 E Ullman
  • 👤 J Osiecki
  • 👤 L Call
  • 👤 R Leute

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 14:49
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/04; C07D233/28; C07D233/44; C07D233/46; C07D233/06; C07D233/30; C07D233/32; C07D233/38; C07D233/42; C07D233/48; C07D233/54; C07D233/66; C07D233/70; C07D233/88; Y; Y10; Y10T; Y10T436/00; Y10T436/24

Claims Analysis

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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-06-18 1976-12-18 1977-06-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-06-18 1980-12-18 1981-06-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-06-18 1984-12-18 1985-06-19 $7700.00 Window Closed / Lapsed

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