Patents by Inventor Yasuo Hayama

Yasuo Hayama 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).

  • Method and apparatus for measuring the coordinates of a surveyed point
    Patent number: 5204731
    Abstract: The invention relates to a method and apparatus for measuring the coordinates of a survey point. The apparatus uses a reflecting mirror at the survey point, a tachymeter for transmitting light to the reflecting mirror and for receiving light reflected from the reflecting mirror, first calculating means for calculating the coordinate values of two positions of the reflecting mirror, and second calculating means for calculating a coordinate value of the survey point from the coordinate values of the two reflecting mirror positions. In operation, the tachymeter transmits light to the reflecting mirror at the survey point wherein the reflecting mirror is locatable at two points present on a line passing through the survey point and which are separated from the survey point by predetermined distances.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: April 20, 1993
    Assignee: Sokkisha Co., Ltd.
    Inventors: Masayoshi Tanaka, Haruo Fukawa, Masamitsu Endo, Ichiro Kadowaki, Yasuo Hayama