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. 06, 2003
Filed:
Nov. 21, 2000
Hideaki Tsuneki, Tokyo, JP;
Masaru Kirishiki, Suita, JP;
Yoshitaka Arita, Nishinomiya, JP;
Yukihide Hashimoto, Takarazuka, JP;
Tomoharu Oku, Suita, JP;
Hisakazu Shindou, Suita, JP;
Yoshiaki Urano, Kawasaki, JP;
Fumiaki Morishita, Tokyo, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
In producing alkanolamines by use of a microporous material as a catalyst, the difficulty in industrially performing the production because of the short lifetime of the catalyst is resolved. A process of regenerating the catalyst by removing an organic substance deposited on the catalyst by means of decomposing and/or extracting the substance is introduced, and thereby steady production is carried out substantially over the long term by switching the reaction and the regenerating processes.