Patents by Inventor Takasui Saito

Takasui Saito 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).

  • Photoelectric conversion sensor with shifted arcuate elements
    Patent number: 4882478
    Abstract: A photoelectric conversion sensor for measuring particle size or size distribution based on the light scattering phenomena with excellent precision and higher resolving power. The sensor is characterized in that 8 or more arcuate photoelectric conversion elements each being defined by two concentric arcs with different radii and two adjacent elements in the radial direction are so arranged that the gaps in the radial direction between two adjacent elements in the radial direction can be substantially eliminated by shifting them in the circumferential direction.
    Type: Grant
    Filed: March 2, 1988
    Date of Patent: November 21, 1989
    Assignee: Hideo Nagasu and Tohnichi Computer Applications Co., Ltd.
    Inventors: Shigeru Hayashi, Takasui Saito, Shoji Horiuchi, Tadashi Takahashi