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. 26, 1996
Filed:
Oct. 25, 1994
Takamasa Fuchikami, Sagamihara, JP;
Noriko Wakasa, Sagamihara, JP;
De-Hua He, Sagamihara, JP;
Takanori Miyake, Yokkaichi, JP;
Takashi Okada, Yokkaichi, JP;
Atsushi Fujimura, Yokkaichi, JP;
Hiroyuki Sasakibara, Yokkaichi, JP;
Yoshiaki Kanou, Yokkaichi, JP;
Toshihiro Saito, Machida, JP;
Tosoh Corporation, Yamaguchi, JP;
Sagami Chemical Research Center, Tokyo, JP;
Abstract
A lactone is prepared by catalytically hydrogenating a dicarboxylic acid having 3 to 10 carbon atoms or a functional derivative thereof in the presence of a catalyst comprising a metal selected from the elements of group VIII of the periodic table or a combination of said metal with an element selected from the elements of groups IVa, VIb and VIIb of the peridic table, and further in the co-presence of an alkali metal salt or an alkali metal hydroxide.