Patents by Inventor Nobuomi Kuroi

Nobuomi Kuroi 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).

  • Water-soluble temper rolling oil and method of temper rolling
    Patent number: 4883606
    Abstract: The present invention relates to a temper rolling oil which comprises:(A) a water-soluble cationic compound prepared by neutralizing a condensation product obtained by reacting the following compounds 1 to 3 with each other by heating:1. an aliphatic dicarboxylic acid,2. at least one amino compound represented by the following formulae (a) to (c): ##STR1## 3. a particular polyethyleneimine, with an oxoacid of phosphorus, (B) an aqueous rust preventive, and(C) water.The present invention is also concerned with a method of temper rolling which, comprises of conducting temper rolling at a reduction ranging from 0.5 to 30% using a dilute solution prepared by diluting a temper rolling oil of the kind as described above, so that the concentration of a water-soluble cation compound contained therein is 300 to 5,000 ppm.
    Type: Grant
    Filed: October 7, 1987
    Date of Patent: November 28, 1989
    Assignees: Nippon Kokan Kabushiki Kaisha, Yushiro Chemical Industry Co., Ltd.
    Inventors: Hiroshi Kuwamoto, Shuichi Iwado, Yoichi Koga, Tomoya Izushi, Toshimi Muto, Nobuomi Kuroi