Patents by Inventor Sotohiko Eimori

Sotohiko Eimori 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 the production of calcium pantothenate
    Publication number: 20040049075
    Abstract: A method for preparing crystalline calcium pantothenate, which comprises the step of allowing a homogenous mixture containing crystalline calcium pantothenate and amorphous calcium pantothenate to absorb moisture. The aforementioned method comprises, for example, the following steps of (1) mixing crystalline calcium pantothenate and amorphous calcium pantothenate to prepare a homogenous mixture; and (2) allowing the homogenous mixture obtained in the above step (1) to absorb moisture, and enables efficient preparation of crystalline calcium pantothenate with extremely low hygroscopicity.
    Type: Application
    Filed: May 14, 2003
    Publication date: March 11, 2004
    Inventors: Norikazu Takahashi, Tomoko Nozaki, Sotohiko Eimori, Motoo Shiba
  • Method for producing calcium pantothenate
    Patent number: 6582940
    Abstract: A method for preparing nondeliquescent crystalline calcium pantothenate which comprises the steps of: (1) stirring a supersaturated aqueous solution containing calcium pantothenate in a ratio of 60% (W/W) or more, for example, by using a grinder mill, to obtain a crystal suspension; and (2) drying the suspension. A nondeliquescent crystalline calcium pantothenate which is substantially free from an organic solvent can be efficiently prepared.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: June 24, 2003
    Assignee: Daiichi Fine Chemical Co., Ltd.
    Inventors: Norikazu Takahashi, Tomoko Nozaki, Sotohiko Eimori, Motoo Shiba