The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 15, 1983
Filed:
Jul. 20, 1982
Applicant:
Inventors:
Takahiro Haga, Kusatsu, JP;
Tetsuji Nishikawa, Moriyama, JP;
Toshio Nakajima, Kusatsu, JP;
Kohji Minamida, Shiga, JP;
Masaru Maeda, Hikone, JP;
Assignee:
Ishihara Sangyo Kaisha Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548367 ;
Abstract
4-Benzoyl-5-hydroxypyrazoles useful as herbicidal active ingredients, their intermediate or stabilizers against heat, oxidation or ultraviolet light are produced by a condensation of a pyrazolone, tetrachloromethane and a benzene compound in the presence of an aluminium halide, followed by a hydrolysis reaction with industrial advantages.