Patents by Inventor Yukitaka Osawa

Yukitaka Osawa 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: 6285141
    Abstract: A deflection yoke and a color cathode ray tube using the same therein and adapted for exact correction of misconvergence caused when horizontal positional deviations are induced between electron beams and a vertical deflection magnetic field. In the deflection yoke, two magnetic coil pairs are positioned opposite to each other horizontally in such a manner as to interpose the neck of a cathode ray tube therebetween. The first coil of the first coil pair is connected in series or parallel to the fourth coil of the second coil pair. The second coil of the first coil pair is connected in series or parallel to the third coil of the second coil pair. The coils thus connected are further connected in series to a vertical deflection coil. In this structure, the first and second electric coil pairs are so connected as to generate magnetic fields in mutually reverse directions. The two electric coil pairs in combination with a variable resistor constitute a bridge circuit.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: September 4, 2001
    Assignee: Sony Corporation
    Inventor: Yukitaka Osawa