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. 04, 1996
Filed:
Mar. 21, 1995
Applicant:
Inventors:
Akio Suemori, Tsukuba, JP;
Ryuichiro Kurane, Tsukuba, JP;
Kenji Nakajima, Tsukuba, JP;
Yoshihiro Nakamura, Tsukuba, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C12P / ;
U.S. Cl.
CPC ...
435142 ; 4352521 ; 435146 ;
Abstract
There is disclosed a method for producing 3,4-dihydroxyphthalic acid, comprising treating phthalic acid with a product which is obtained by treating the cell membrane fraction of microorganism bacterial bodies capable of converting phthalic acid to 3,4-dihydroxyphthalic acid with a condensate of polyethylene oxide with a higher alcohol, thereby converting the phthalic acid to 3,4-dihydroxyphthalic acid. According to the method, only 3,4-dihydroxyphthalic acid, which is an intermediary metabolite, can be produced efficiently in a process of biodegrading phthalic acid with a microorganism.