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US3636059A Expired / Lapsed US ⏱️ 0.0 years remaining

Cyclopentenolone esters

Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1967-07-17
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Granted: 1972-01-18
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Expires: 1987-07-17
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Abstract

Abstract NOVEL CYCLOPROPANECARBOXYLIC ACID ESTERS OF THE FORMULA, 3-((2-R1,2-R2,3-R3,3-R4-CYCLOPROPYL)-COO-),4-(CH3-),5-R5- 4-CYCLOPENTEN-1-ONE WHEREIN R5 HAS THE SAME MEANINGS AS ABOVE. THESE ESTERS ARE USEFUL AS AN INSECTICIDE HARMLESS TO WARM-BLOOD ANIMALS. 1-(O=),3-(HO-),4-(CH3-),5-R5-4-CYCLOPENTENE WHEREIN R1, R2, R3 AND R4 HAVE ALL THE SAME MEANINGS AS ABOVE, OR ITS REACTIVE DERIVATIVE, WITH A CYCLOPENTENOLONE COMPOUND HAVING THE FORMULA, 1-(HOOC-),2-R1,2-R2,3-R3,3-R4-CYCLOPROPANE WHREIN R1 IS HYDROGEN, LOWER ALKYL HAVING 1 TO 4 CARBON ATOMS, PHENYL, LOWER ALKYL HAVING 1 TO 4 CARBON ATOMSSUBSITUTED PHENYL, OR LOWER ALKOXY HAVING 1 TO 4 CARBON ATOMS-SUBSITUTED PHENYL, R2, R3 AND R4 ARE LOWER ALKYLS HAVING 1 TO 4 CARBON ATOMS, AND R5 IS LOWER ALKYL HAVING 1 TO 4 CARBON ATOMS, LOWER ALKENYL HAVING 1 TO 4 CARBON ATOMS, CYCLOALKENYL HAVING 5 TO 6 CARBON ATOMS, ARALKYL HAVING 6 TO 9 CARBON ATOMS, ALKADIENYL GROUP OF 5 CARBON ATOMS OR FURFURYL. THESE NOVEL ESTERS ARE PREPARED BY ESTERIFYING A CYCLOPORPANECARBOXYLIC ACID HAVING THE FORMULA,

Inventors

  • 👤 Masanao Matsui
  • 👤 Takeshi Kitahara
  • 👤 Keimei Fujimoto
  • 👤 Yositosi Okuno

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 14:22
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/40; C07D307/46

Claims Analysis

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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) 1975-01-17 1975-07-19 1976-01-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-01-17 1979-07-19 1980-01-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-01-17 1983-07-19 1984-01-18 $7700.00 Window Closed / Lapsed

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