Patents by Inventor Yasushi Kadowaki

Yasushi Kadowaki 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).

  • Catalyst for producing both end-hydroxyl group-terminated diols, process for producing the catalyst, process for producing the diols by using the catalyst, and both end-hydroxyl group-terminated diols obtained by the process
    Publication number: 20040236156
    Abstract: A process for producing a both end-hydroxyl group-terminated diol, wherein an epoxy alcohol represented by the general formula (1) is subjected to a hydrogenolysis reaction in the presence of a catalyst for producing both end-hydroxyl group terminated diols, which catalyst contains at least one element selected from the group consisting of Group V elements, Group VI elements, Group VII elements, Group VIII elements, Group IX elements, Group X elements, and Group XI elements in the periodic table, in the presence of at least one solvent selected from the group consisting of ethers, esters, aromatic hydrocarbon compounds, alicyclic hydrocarbon compounds and aliphatic hydrocarbon compounds, to thereby obtain a both end-hydroxyl group-terminated diol represented by general formula (2). General formula (1) and (2) are as described in the specification.
    Type: Application
    Filed: June 28, 2004
    Publication date: November 25, 2004
    Applicant: SHOWA DENKO K.K.
    Inventors: Yasushi Kadowaki, Masato Kaneda, Hiroshi Uchida
  • Catalyst for producing both end-hydroxyl group-terminated diols, process for producing the catalyst, process for producing the diols by using the catalyst, and both end-hydroxyl group-terminated diols obtained by the process
    Publication number: 20030119666
    Abstract: A catalyst which contains at least one element selected from the group consisting of Group V elements, Group VI elements, Group VII elements, Group VIII elements, Group IX elements, Group X elements, and Group XI elements in the periodic table, and is to be used for subjecting an epoxy alcohol represented by a general formula (1) to a hydrogenolysis reaction in the presence of at least one solvent selected from the group consisting of ethers, esters, aromatic hydrocarbon compounds, alicyclic hydrocarbon compounds and aliphatic hydrocarbon compounds. By use of such a catalyst, a both end-hydroxyl group-terminated diol having a high purity can be produced efficiently.
    Type: Application
    Filed: March 26, 2002
    Publication date: June 26, 2003
    Inventors: Yasushi Kadowaki, Masato Kaneda, Hiroshi Uchida
  • Fumarate derivative, method for producing the same
    Publication number: 20030060563
    Abstract: This invention is to provide a polymerizable composition having excellent curability and surface hardness, and a cured product thereof.
    Type: Application
    Filed: March 19, 2002
    Publication date: March 27, 2003
    Inventors: Kazufumi Kai, Keisuke Ohta, Yasushi Kadowaki, Hiroshi Uchida
  • Method for producing fumaric acid esters
    Publication number: 20020002306
    Abstract: A method for isomerizing a maleate, or a maleate containing a 2-propenyloxy group in the molecule at a high selectivity is provided which employs an isomerizing catalyst containing a Group VIII element. This method produces a fumarate, or a fumarate containing a 1-propenyloxy group in a high yield, which is useful in the fields of resin source materials and plasticizer. This method gives high-purity fumarates containing no catalyst residue by use of a heterogeneous catalyst which is readily separable and non-corrosive.
    Type: Application
    Filed: February 14, 2001
    Publication date: January 3, 2002
    Inventors: Yasushi Kadowaki, Keisuke Ohta, Kazufumi Kai