Patents by Inventor Kenji Arichika

Kenji Arichika 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).

  • Electromagnetic conductivity meter and a conductivity measuring method
    Patent number: 5089781
    Abstract: An electromagnetic conductivity meter comprises a core; a primary coil wound around the core; an alternating power source for applying an alternating voltage having a given frequency to the primary coil to excite the core; a tube wound around the core through which a liquid to be measured flows; induction current detecting means disposed at the opposite ends of tube; and an operational means for determining the conductivity of the liquid to be measured from a value of the induction current detected by the induction current detection means.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: February 18, 1992
    Assignees: Tosoh Corporation, Nichiri Mfg. Co., Ltd.
    Inventors: Kenji Arichika, Mitsuru Fukamachi, Satoshi Higashi, Noboru Maruyama
  • Laser light scattering photometer
    Patent number: 4420257
    Abstract: A laser light beam is projected through a fluid measuring cell having a fluid accommodating chamber and inlet and outlet pathways for the fluid. The light is separated into transmitted light and scattered light. Separate light detectors sense the transmitted light and scattered light. An electric control circuit uses the variations of the intensity of the transmitted light to compensate for fluctuations in the intensity of the scattered light to provide an output related to the intensity of the scattered light.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: December 13, 1983
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Mitsutoshi Fukuda, Nobuyuki Baba, Kenji Arichika