Patents by Inventor John M. Hogseth

John M. Hogseth 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).

  • Retro-reflective liquid coating composition
    Patent number: 4312676
    Abstract: A liquid coating composition that is useful to form retro-reflective marks that actuate photoscanner sensing devices and that comprises a liquid vehicle and retro-reflective elements uniformly dispersed in the vehicle. The vehicle includes a high proportion of volatile solvent and a gel agent that gels the vehicle so that the retro-reflective elements are suspended in the vehicle. The gel agent comprises at least a large proportion of the non-volatile portion of the vehicle.
    Type: Grant
    Filed: August 26, 1977
    Date of Patent: January 26, 1982
    Assignee: Minnesota Mining & Manufacturing Company
    Inventors: John M. Hogseth, Melvin L. Johnson