Patents by Inventor Syoichiro Kajiwara

Syoichiro Kajiwara 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).

  • Scale inhibitor
    Patent number: 4561982
    Abstract: The present invention relates to a scale inhibitor for water and aqueous systems.The scale inhibitor comprising an oxidized polysaccharide containing, as the essential units, carboxyl group-bearing units of the formula: ##STR1## where A is CH.sub.2 OR, R is H, (CH.sub.2).sub.n COOM or COOM, M is H, an alkali metal ion, or an ammonium group, and n is an integer from 1 to 3, obtained by the oxidative cleavage of polysaccharides containing 6-membered monosaccharide rings.
    Type: Grant
    Filed: October 19, 1983
    Date of Patent: December 31, 1985
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Yasuhisa Kuriyama, Syoichiro Kajiwara, Fumikazu Ozaki