Patents by Inventor Noboru Yokotani

Noboru Yokotani 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).

  • Patent number: 4939095
    Abstract: An automatic chemical analyzer has a compensation coefficient calculating section and a light-path-length-based compensating section. The calculating section obtains the ratio of the absorbancies measured of reaction cells filled with a sample of the known absorbancy to the absorbancy measured of each cell, thereby calculating compensation coefficients for the respective cells. The compensating section multiplies the absorbancies measured of the cells refilled with samples of different unknown absorbancies by the compensation coefficients calculated by the calculating section, thereby compensating the absorbancies for the light path lengths of the cells. The compensated absorbancies, i.e., the absorbancies of the samples, are used in analyzing the samples.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: July 3, 1990
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Noboru Yokotani
  • Patent number: 4549809
    Abstract: A photometric measurement method for producing readout signals indicative of light absorption of samples contained in a series of cylindrical cuvettes arranged in a movable cuvette carrier for successively conveying said cuvettes into the path of a measuring light beam directed onto a radiation detector, wherein readings are taken at precisely measured intervals as a function of the width of the cuvette, the rate of movement of the cuvette and the required number of measurements, and a selected reading is taken at the same distance from the leading wall of each cuvette.
    Type: Grant
    Filed: September 28, 1983
    Date of Patent: October 29, 1985
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Tomiharu Minekane, Noboru Yokotani, Takehiko Onuma