Patents by Inventor Yasuhisa Kuroda

Yasuhisa Kuroda 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).

  • Repelling material for animals
    Patent number: 5364626
    Abstract: A repelling material for animals retaining a great amount of a repellent and also having an excellent sustained release property can be obtained by adsorbing the repellent and at least one substance of phthalic acid esters, citric acid esters and glycols.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: November 15, 1994
    Assignee: Osaka Gas Company Ltd.
    Inventors: Masamitsu Hasegawa, Yasuhisa Kuroda
  • Heavy metal ion adsorbents
    Patent number: 4174428
    Abstract: A heavy metal ion adsorbent represented by the following general formula: ##STR1##wherein l, m, and n are 2 or 3, respectively; R is an alkyl group containing 4 to 6 carbon atoms which is substituted by an amino group in the .omega.-position; and A is hydrogen or a synthetic resin.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: November 13, 1979
    Assignee: Iwao Tabushi
    Inventors: Iwao Tabushi, Hidefumi Kato, Yoichi Taniguchi, Yasuhisa Kuroda
  • Alkyl substituted cyclams
    Patent number: 4168265
    Abstract: Alkyl cyclam resulting from substitution of one or more hydrogens of the cyclam represented by the formula ##STR1## by alkyl groups containing at least 8 carbon atoms. The alkyl cyclam can be used for capturing metal ions.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: September 18, 1979
    Assignee: Iwao Tabushi
    Inventors: Iwao Tabushi, Mariko Fujiyoshi, Hidefumi Kato, Yasuhisa Kuroda