Patents by Inventor Kyuichi Ohyama

Kyuichi Ohyama 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 preparation of a purified 3,4-epoxycyclohexyl methyl(meth)acrylate and, a stabilized 3,4-epoxycyclohexyl methyl acrylated
    Patent number: 5756780
    Abstract: Disclosed are an improvement of a process for the preparation of a purified 3,4-epoxycyclohexyl methyl(meth)acrylate, and a stabilized 3,4-epoxycyclohexyl methyl(meth)acrylate.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: May 26, 1998
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Kyuichi Ohyama, Akira Horiguchi
  • Process for the preparation of isopropyl acetate
    Patent number: 5384426
    Abstract: Disclosed is an improved process for the refinement of isopropyl acetate, whereby there can be effectively prepared isopropyl acetate having a high purity of, for example, approximately 99.9%, in which a distillate fraction having a carbon number of 3 obtained by catalytically cracking petroleums such as naphtha or a crude propylene by-produced in a process for the preparation of isobutene by the dehydrogenation of isobutane.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: January 24, 1995
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Kyuichi Ohyama, Giichi Shimada, Yuichi Tokumoto, Kazuo Sakamoto