Patents by Inventor Sigeo Sakai

Sigeo Sakai 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: 4472203
    Abstract: Disclosed herein is a method for the separation of a mixed glucose-fructose solution into glucose and fructose by using a strongly acidic cation exchange resin of alkaline earth metal type and, more particularly, such method for the separation of glucose and fructose wherein said mixed glucose-fructose solution and water are supplied to and circulated through a bed of said cation exchange resin at least twice for increasing the distance between a zone of adsorption for glucose and a zone of adsorption for fructose that are formed in this way in the bed and, after such preliminary procedure, the glucose fraction and the fructose fraction of the effluent liquid are removed spotwise from the system while the remaining effluent fractions are again circulated in the order of efflux; at this time, the mixed glucose-fructose solution is injected spotwise into a portion of the liquid flow where the fructose content ratio is approximately equal to or slightly lower than that of the mixed glucose-fructose liquid, and w
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: September 18, 1984
    Assignee: Japan Organo Co., Ltd.
    Inventors: Akimitsu Miyahara, Sigeo Sakai, Fumihiko Matsuda, Hiroji Ushikubo, Kuniaki Kawano
  • Patent number: 4391649
    Abstract: This invention relates to a process for regenerating a strongly acidic cation exchange resin which has used for a desalting treatment or partition chromatographic separation of a sugar liquid which lowers its separation capability, by means of contacting said strongly acidic cation exchange resin with an enzyme solution.
    Type: Grant
    Filed: June 30, 1981
    Date of Patent: July 5, 1983
    Assignee: Japan Organo Co., Ltd.
    Inventors: Hiroshi Shimizu, Sigeo Sakai, Fumihiko Matsuda, Reiko Matsumoto