Patents by Inventor Hiroshi Kurobe

Hiroshi Kurobe 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 inhibiting corrosion in water systems
    Patent number: 5820763
    Abstract: The water of a water system is treated to inhibit corrosion of metal components by passage through an anion exchanger preloaded with corrosion-inhibiting anions. A low molecular weight polymer is added. A chlorine containing slime controlling agent is added. The concentration of the chloride ion in water is maintained below 50 mg/L.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: October 13, 1998
    Assignee: Kurita Water Industries, Ltd.
    Inventors: Kazuhisa Fujita, Hiroshi Kurobe, Kuniyuki Takahashi
  • Method of producing pure water
    Patent number: 5571419
    Abstract: Raw water is made acidic so that the pH is not more than 4.5 and heated in the presence of an oxidizing agent to decompose TOC components in the raw water, and then deionized, thereby producing ultrapure water having a greatly low concentration of organic matters.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: November 5, 1996
    Assignee: Kurita Water Insustries Ltd.
    Inventors: Yoshinobu Obata, Nobuhiro Orita, Hiroshi Kurobe
  • S-adenosylmethionine derivatives
    Patent number: 5166328
    Abstract: Novel S-adenosylmethionine derivatives useful as medicament are provided which are represented by the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represent straight or branch alkyl or alkenyl having 1-10 carbon atoms; m is 1-3; and A is an anion of inorganic or organic acids.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: November 24, 1992
    Assignee: Fuji Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Kurobe, Tomokazu Sugawara, Takeshi Endo