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:
May. 12, 1992
Filed:
Oct. 29, 1990
Applicant:
Inventors:
Kotohiro Nomura, Ibaraki, JP;
Masaru Ishino, Ibaraki, JP;
Assignee:
Sumitomo Chemical Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
552238 ;
Abstract
Aminoanthraquinones which are materials for dyes are prepared by allowing nitroanthraquinones to react with carbon monoxide and water in a liquid phase in the presence of a homogeneous catalyst comprising rhodium compounds or ruthenium compounds and solvents therefor.
Nomura, Kotohiro. (1992). Production of aromatic amines (U.S. Patent No. 5112997). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5112997
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile