Patents by Inventor Kiyoteru Takayasu

Kiyoteru Takayasu 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).

  • Device for eliminating impure ions in chromium plating bath
    Patent number: 4006072
    Abstract: This disclosure relates to a device for eliminating impure ions in chromium plating bath such as Sargent bath or Chromate bath. Also, the disclosure relates to specific anode used therein and chromium plating system combined with the device. According to the device, the impure ions such as those of Fe, Ni, Cu, Pb, Zn, etc. are eliminated from the bath in the form of slime which mainly precipitates on or around the anode under the condition of DC 1 to 10 volt between the electrodes and anode current density of 1 to 100 A/dm.sup.2.
    Type: Grant
    Filed: June 2, 1975
    Date of Patent: February 1, 1977
    Inventor: Kiyoteru Takayasu