Patents by Inventor John William Johnson

John William Johnson 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 of decontaminating freeze dryers
    Patent number: 5837193
    Abstract: A method of decontaminating or sterilizing freeze dryers at low temperature and pressure levels by utilizing sterilant vapor is disclosed.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: November 17, 1998
    Assignee: American Sterilizer Company
    Inventors: Robert Warren Childers, Columbus Clark Cockerham, Jr., Matthew Stuart Dixon, John William Johnson, Thaddeus J. Mielnik, Manfred Michael Steiner