Patents by Inventor Keiki Ariga

Keiki Ariga 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 for making double-walled insulating metal container
    Patent number: 5153977
    Abstract: This invention relates to a method of making a double-walled thermally insulating metal container comprising an inner casing and an outer casing having an evacuation opening. A quantity of joining material is placed near or on the evacuation opening so as to cover the opening partially or completely. The assembly is treated in a vacuum furnace to evacuate the insulating space, to melt the joining material and to solidify the joining material in situ to provide vacuum sealing without resorting to a conventional sealing plate.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: October 13, 1992
    Assignee: Nippon Sanso Corporation
    Inventors: Shouji Toida, Shigeru Tsuchiya, Keiki Ariga, Seiichi Itoh, Hidetoshi Ohta
  • Method and apparatus for determinating a vacuum degree within a flexible vacuum package
    Patent number: 4709578
    Abstract: Method and apparatus for determining a vacuum degree of a flexible vacuum package. The vacuum package is sealingly placed within a vacuum chamber and then the vacuum chamber is evacuated to a vacuum degree below the vacuum degree of the vacuum package placed within the vacuum chamber. A start of inflation of the package is detected during the evacuation step and pressure within the vacuum chamber is measured when the start of the inflation of the package is detected.
    Type: Grant
    Filed: October 29, 1985
    Date of Patent: December 1, 1987
    Assignee: Nippon Sanso Kabushiki Kaisha
    Inventors: Tadayoshi Iwasaki, Keiki Ariga, Makoto Sato