Patents by Inventor Henry H. Howard

Henry H. Howard 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).

  • Cryogenic product treating apparatus
    Patent number: 4928492
    Abstract: A closed pressure vessel is provided having a cryogenic liquid bath therein utilizing a bath liquid having a low boiling point temperature.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: May 29, 1990
    Inventor: Henry H. Howard
  • Aseptic pump
    Patent number: 4688991
    Abstract: A centrifugal pump is provided including a first stationary seal ring mounted from the pump housing for slight axial and radial shifting relative thereto. The stationary seal ring includes inner and outer large and small diameter axially facing seal faces and the impeller of the pump supports a pair of inner and outer seal rings each supported from the impeller for limited radial and axial shifting relative thereto. The inner and outer seal rings axially oppose and are disposed in sliding contact with the inner and outer seal faces of the stationary ring. Also, the impeller of the pump and the tangential outlet thereof include structural features which greatly facilitate usage of the pump in pumping thick fluids.
    Type: Grant
    Filed: December 10, 1985
    Date of Patent: August 25, 1987
    Inventor: Henry H. Howard