Patents by Inventor Toshitsugu Ozeki

Toshitsugu Ozeki 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).

  • Process for producing l-phenylalanine
    Patent number: 4783403
    Abstract: L-phenylalanine is produced by using a microorganism belonging to the species Citrobacter freundii, Erwinia herbicola, Enterobacter cloacae, Klebsiella oxytoca, Salmonella typhimurium, Bacillus cereus, Flavobacterium suaveolens, Serratia marcescens, Pseudomonas putida, Enterobacter cloacae, Proteus mirabilis, Paracoccus denitrificans, Arthrobacter globiformis, Bacillus sphaericus, Corynebacterium hydrocarboclastus, Kluyvera micum or Microbacterium ammoniaphilum and having the ability to convert phenylpyruvic acid into L-phenylalanine in the presence of an amino group donor; or fumaric acid and ammonium ion or urea.
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: November 8, 1988
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Kazumi Araki, Toshitsugu Ozeki, Yukiyoshi Ito, Shuichi Ishino, Hideharu Anazawa, Shigeru Kamimori