Patents by Inventor John Hake

John Hake 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 ultra high pressure water jet peening
    Patent number: 5778713
    Abstract: The invention describes a method and apparatus for peening objects by means of ultrahigh velocity waterjet. The apparatus includes means for holding and producing relative motion in three dimensions of both the workpiece and the jet. Control means are provided to allow uniform and variable depth peening of complex shapes and automatic variations in relative speed, standoff distance, angle and pressure. The method includes the use of entrained disappearing particles in the waterjet to facilitate peening.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: July 14, 1998
    Assignee: Waterjet Technology, Inc.
    Inventors: Tom Butler, Dave Monserud, Dave Bothell, Dave Steele, John Hake
  • Method of controlling waste water treatment by anaerobic fermentation
    Patent number: 5180494
    Abstract: A method for monitoring and regulating waste water treatment by anaerobic fermentation by measuring enzymatic activity or adenosine triphosphate (ATP) concentration. The method provides for earlier detection of abnormal fermentation conditions and allows adjustment of controllable variables prior to the appearance of abnormal effluents.Also described is an apparatus for controlling waste water treatment by a device which continuously measures the enzyme or ATP concentration in the treated water.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: January 19, 1993
    Assignee: Shimizu Construction Co., Ltd.
    Inventors: Makoto Yamaguchi, John Hake, Kazuo Okamura, Kiyoshi Minami