Patents by Inventor Katsuhiko Momozaki

Katsuhiko Momozaki 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 removing scale
    Patent number: 5346626
    Abstract: A method of removing scale in a cooling water system in which scale is formed comprises adding 0.01 weight % or more based on the total amount of water contained in the cooling water system of a copolymer containing vinyl monomer units having a carboxyl group or salt thereof and vinyl monomer units having a sulfo group or salt thereof in amounts to make the mol ratio of the carboxyl group to the sulfo group in the range of 30:70 to 95:5 and having weight average molecular weight calibrated with polystyrene in the range of 1,000 to 100,000 to the cooling water system while operating the cooling water system and the cleaved or dissolved scale is discharged out of the cooling water system by blowing.
    Type: Grant
    Filed: June 29, 1993
    Date of Patent: September 13, 1994
    Assignees: Kurita Water Industries Ltd., Japan Synthetic Rubber Co., Ltd.
    Inventors: Katsuhiko Momozaki, Masako Kusunoki, Fumio Kawamura, Hisao Ono, Katsumi Itoh, Yoshihiro Shimizu, Yuuichi Ono