Patents by Inventor Ituo Hama

Ituo Hama 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 of manufacturing a fatty acid ester of polyoxyalkylene alkyl ether
    Patent number: 6184400
    Abstract: A method of manufacturing a fatty acid ester of polyoxyalkylene alkyl ether wherein a fatty acid ester of polyoxyalkylene alkyl ether represented by the following formula (I) is produced through a reaction between a fatty acid alkyl ester with an alkylene oxide in the presence of a composite metal-oxide catalyst whose surface is modified with a metal hydroxide or a metal alkoxide: wherein each of R1 and R3 independently represents an alkyl group or an alkenyl group, R2 represents an alkylene group, and n is a positive number.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: February 6, 2001
    Assignee: Lion Corporation
    Inventors: Ituo Hama, Takahiro Okamoto, Hisashi Sasamoto, Hirofumi Nakamura
  • Method of manufacturing a fatty acid ester of polyoxyalkylene alkyl ether
    Patent number: 5817844
    Abstract: A method of manufacturing a fatty acid ester of polyoxyalkylene alkyl ether wherein a fatty acid ester of polyoxyalkylene alkyl ether represented by the following formula (I) is produced through a reaction between a fatty acid alkyl ester with an alkylene oxide in the presence of a composite metal-oxide catalyst whose surface is modified with a metal hydroxide or a metal alkoxide: ##STR1## wherein each of R.sub.1 and R.sub.3 independently represents an alkyl group or an alkenyl group, R.sub.2 represents an alkylene group, and n is a positive number.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: October 6, 1998
    Assignee: Lion Corporation
    Inventors: Ituo Hama, Takahiro Okamoto, Hisashi Sasamoto, Hirofumi Nakamura