Patents by Inventor Saburo Hayakawa

Saburo Hayakawa 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 making carbon dioxide snow
    Patent number: 5961041
    Abstract: Disclosed are a method of making CO.sub.2 snow by injecting liquefied CO.sub.2 into a snow horn from the ceiling of the snow horn having an opening at the lower end to effect adiabatic expansion and an apparatus therefor. Liquefied CO.sub.2 is injected radially outward so that it may flow along the curved internal surface of the ceiling and continuously along the internal surface of the snow horn and that effusive flows of liquefied CO.sub.2 may flow independently at the inner upper part of the snow horn and may be combined partly with one another at the inner lower part of the snow horn.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: October 5, 1999
    Assignee: Nippon Sanso Corporation
    Inventors: Shoji Sekihara, Saburo Hayakawa, Makoto Toriumi, Toshiyasu Suzuki