Patents by Inventor Jack Hisaw

Jack Hisaw 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).

  • Well testing valve
    Patent number: 5379839
    Abstract: A well testing valve for obtaining a pressure build-up survey from a well bore intersecting a reservoir, the well bore containing a landing receptacle, is disclosed. The well testing valve comprises locking means for locking the well testing valve in the landing receptacle, valve means for selectively opening and closing the well bore. Also included is a rotational power source including a control means for selectively opening and closing the well bore, and recording means for recording the bottom hole pressure and temperature.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: January 10, 1995
    Assignee: Specialty Machine & Supply, Inc.
    Inventor: Jack Hisaw
  • Well testing valve
    Patent number: 5318120
    Abstract: An apparatus and method for obtaining a pressure build-up survey from a well bore intersecting a reservoir, the well bore containing a landing receptacle, is disclosed. The apparatus comprises locking means for locking the apparatus in the landing receptacle, valve means for selectively opening and closing the well bore. Also included is prong means for selectively opening and closing the well bore, and recording means for recording the bottom hole pressure and temperature.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: June 7, 1994
    Assignee: Specialty Machine & Supply, Inc.
    Inventor: Jack Hisaw