Patents by Inventor Sunao Nishimura

Sunao Nishimura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6013492
    Abstract: A process for producing calcium D-pantothenate, which comprises bringing a solution containing D-pantothenic acid directly produced by microbial fermentation into contact with activated carbon to adsorb the D-pantothenic acid to the activated carbon, eluting the D-pantothenic acid with a hydrophilic organic solvent, neutralizing the eluate with an alkali agent containing calcium to precipitate calcium D-pantothenate, and collecting the calcium D-pantothenate.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: January 11, 2000
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Sunao Nishimura, Hiroshi Miki, Junichi Matsumoto, Kosaku Shibutani, Hideo Yada