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:
Jun. 26, 1990
Filed:
Nov. 03, 1988
Applicant:
Inventors:
Akihide Kudoh, Yokohama, JP;
Tadatoshi Honda, Hiratsuka, JP;
Makoto Kotani, Yokohama, JP;
Kazuhiro Terada, Yokohama, JP;
Takeshi Tsuda, Kouza, JP;
Shinji Kiyono, Yokohama, JP;
Assignee:
Mitsui Toatsu Chemicals, Incorporated, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07B / ; C07D / ;
U.S. Cl.
CPC ...
548508 ;
Abstract
Disclosed herein is to react an aniline and an ethylene glycol at a superatmospheric pressure in preparing an indole by subjecting the aniline and ethylene glycol to a gas-phase catalytic reaction in the presence of a catalyst, thereby improving the selectivity of the reaction and the service life of the catalyst.