Patents by Inventor Seinosuke Satoh

Seinosuke Satoh 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 methylal
    Patent number: 6379507
    Abstract: A process for producing methylal that involves feeding a liquid containing methanol, formaldehyde and water to an uppermost reactor of at least four solid acid catalyst-filled reactors which are each externally connected to an intermediate portion of a distillation column; and forcibly circulating a liquid containing methanol, formaldehyde, water and produced methylal in a temperature range of 80° C. to 100° C.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: April 30, 2002
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Seinosuke Satoh, Yukio Tanigawa
  • Stabilized oxymethylene copolymer composition
    Patent number: 4792579
    Abstract: There is disclosed a stabilized oxymethylene copolymer composition comprising a blend of an oxymethylene copolymer and an alkaline earth metal salt of an ester of a tribasic inorganic acid of an organic carboxylic acid monoester of an alcohol having two or more hydroxyl groups, as the stabilizer.
    Type: Grant
    Filed: February 19, 1988
    Date of Patent: December 20, 1988
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Seinosuke Satoh, Minoru Hamada