Patents by Inventor Shuzo Mimaya

Shuzo Mimaya 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 protecting austenitic stainless steel-made equipment from occurrence of stress-corrosion cracking
    Patent number: 5089226
    Abstract: A method of protecting an austenitic stainless steel-made equipment to be exposed to a fluid containing sulfides from the occurrence of stress-corrosion cracking is disclosed, comprising washing the equipment with a mineral oil containing at least one compound selected from organic amines and acid amide compounds in stopping the operation thereof.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: February 18, 1992
    Assignee: Nippon Mining Co., Ltd.
    Inventors: Mitsuhiro Ohashi, Shuzo Mimaya
  • Method for discharging consolidated waste catalyst
    Patent number: 4630779
    Abstract: Consolidated waste catalyst is discharged from a reactor by forming at least one hole in it, then filling the hole with hydrative expansive fracturing agent in the presence of water, waiting until fracturing occurs and then discharging the fractured catalyst from the reactor.
    Type: Grant
    Filed: August 2, 1985
    Date of Patent: December 23, 1986
    Assignee: Nippon Mining Co., Ltd.
    Inventors: Osamu Suuchi, Shuzo Mimaya, Masaru Ohashi