Patents by Inventor Graham M. Johnson

Graham M. 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).

  • Smog monitor
    Patent number: 5571724
    Abstract: The amount of smog formed in air and the smog concentration in air is determined by measuring the consumption of nitric oxide.
    Type: Grant
    Filed: January 22, 1996
    Date of Patent: November 5, 1996
    Assignee: Commonwealth Scientific and Industrial Research Organization
    Inventor: Graham M. Johnson
  • Smog monitor
    Patent number: 5356818
    Abstract: The amount of smog formed in air and the smog concentration in air is determined by measuring the consumption of nitric oxide.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: October 18, 1994
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventor: Graham M. Johnson