Patents by Inventor Yoshiyasu Maeba

Yoshiyasu Maeba 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).

  • Fine particle collector trap for vacuum evacuating system
    Patent number: 4816046
    Abstract: A particle collector trap for a vacuum evacuating system wherein there is provided a vessel formed of a double-wall cylinder and having an inlet conduit connected to a vacuum processing chamber and an outlet conduit connected to at least one vacuum pump, a passage for flowing gas is defined between the double walls of the vessel, and one of the double walls is heated and other wall is cooled so as to maintain a predetermined temperature difference therebetween.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: March 28, 1989
    Assignee: Nihon Shinku Gijutsu Kabushiki Kaisha
    Inventors: Yoshiyasu Maeba, Satoru Toyoda, Humio Naruse