Patents by Inventor Katsuya Nishimoto

Katsuya Nishimoto 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).

  • Method for production of sialic acid
    Patent number: 5233033
    Abstract: The present invention is directed to a method for producing crude sialic acid, comprising hydrolysis of a delipidated egg yolk and a method for producing high purity sialic acid, which comprises desalting a solution containing sialic acid obtainable by hydrolyzing a delipidated egg yolk, adsorbing sialic acid to an anion exchange resin and then eluting said sialic acid.The present invention makes it possible to produce and purify sialic acid from delipidated egg yolk on an industrial scale.
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: August 3, 1993
    Assignee: Taiyo Kagaku Co., Ltd.
    Inventors: Mamoru Koketsu, Hiroshi Kawanami, Lekh Raj Juneja, Masaru Fujiki, Hajime Hatta, Katsuya Nishimoto, Mujo Kim, Nagataka Yamazaki