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. 06, 1989
Filed:
Sep. 03, 1987
Applicant:
Inventors:
Shinji Ogawa, Kanagawa, JP;
Seiya Iguchi, Tokyo, JP;
Hiroshi Kimura, Kanagawa, JP;
Yoh Ohmori, Kanagawa, JP;
Assignee:
Mitsui Toatsu Chemicals, Inc., Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07C / ;
U.S. Cl.
CPC ...
548497 ; 548496 ; 548344 ; 562445 ; 562554 ; 562557 ; 562559 ;
Abstract
An aqueous solution containing amino acids of which the solubility in water at isoelectric point is low, can be highly concentrated by means of semipermeable membranes in the presence of a water-soluble organic solvent while increasing the solubility by adjusting a pH.