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:
Mar. 21, 2006
Filed:
Mar. 13, 2002
Masaya Miyazaki, Tosu, JP;
Hideaki Maeda, Tosu, JP;
Hiroyuki Nakamura, Tosu, JP;
Noriyuki Yamada, Tosu, JP;
Masao Shibata, Tosu, JP;
Masaya Miyazaki, Tosu, JP;
Hideaki Maeda, Tosu, JP;
Hiroyuki Nakamura, Tosu, JP;
Noriyuki Yamada, Tosu, JP;
Masao Shibata, Tosu, JP;
Abstract
The invention discloses a novel method for the preparation of a 2-keto carboxylic acid from carbon dioxide by an enzymatic addition reaction with an aldehyde compound. Carbon dioxide, which can be in the form of carbonate ions, is reacted with an aldehyde compound such as acetaldehyde and propionaldehyde under mild reaction conditions in the presence of a decarboxylase to give a 2-keto carboxylic acid such as pyruvic and a 2-ketobutyric acid by a reverse reaction to the enzymatic decarboxylation reaction. The scope of the invention involves contribution to a solution of the environmental problem of global warming due to carbon dioxide as a greenhouse effect gas in the aerospace.