Patents by Inventor Shiro Kajiyama

Shiro Kajiyama 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).

  • Method for heat recovery and utilization by use of chemical energy of synthesis and decomposition of methyl formate
    Patent number: 5965769
    Abstract: There are herein disclosed a method for heat recovery and heat utilization by the use of chemical energy which comprises the steps of doing the heat recovery by the following formula (I), and doing the heat utilization by the following formula (I'):HCOOCH.sub.3 .fwdarw.CH.sub.3 OH+CO (I)CH.sub.3 OH+CO.fwdarw.HCOOCH.sub.3 (I')the reaction of the formula (I') being carried out in the presence of an alkali fluoride and zinc oxide. According to the present invention, steam or hot water can be generated at a high temperature of 100.degree. C. or more by the use of a factory waste heat or a river water at a low temperature of 100.degree. C. or less as a heat source from which heat has scarcely been utilized so far, and the thus generated steam or hot water can effectively be used as a heat source or be used in an air conditioner. The catalyst which comprises the alkali fluoride and zinc oxide is used for preparing methyl formate or CO gas according to the formula (I) or (I').
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: October 12, 1999
    Assignee: Mitsubish Gas Chemical Company, Inc.
    Inventors: Shiro Kajiyama, Futoshi Ikoma, Atsushi Okamoto, Mikio Yoneoka, Shuji Ebata, Kenji Nakamura
  • Method for decomposing an aromatic aldehyde-hydrogen fluoride-boron fluoride complex
    Patent number: 4036885
    Abstract: This invention relates to a two-step method for decomposing an aromatic aldehyde-hydrogen fluoride-boron trifluoride complex in the presence of benzene as a diluent to obtain an aromatic aldehyde, hydrogen fluoride and boron trifluoride separately without causing any change in the quality of the aromatic aldehyde or without forming undesirable byproducts.
    Type: Grant
    Filed: February 2, 1976
    Date of Patent: July 19, 1977
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Susumu Fujiyama, Minoru Takagawa, Shiro Kajiyama
  • Method for decomposing an aromatic aldehyde-hydrogen fluoride-boron fluoride complex
    Patent number: 3962343
    Abstract: This invention relates to a two-step method for decomposing an aromatic aldehyde-hydrogen fluoride-boron trifluoride complex in the presence of benzene as a diluent to obtain an aromatic aldehyde, hydrogen fluoride and boron trifluoride separately without causing any change in the quality of the aromatic aldehyde or without forming undesirable byproducts.
    Type: Grant
    Filed: May 8, 1974
    Date of Patent: June 8, 1976
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Susumu Fujiyama, Minoru Takagawa, Shiro Kajiyama