Patents by Inventor Carlos J. Johnson

Carlos J. 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).

  • Patent number: 8065754
    Abstract: The pole plunger includes a main shaft having an upper disc secured to an upper end and a lower disc secured to a lower end. The lower disc has a radius greater than that of the upper disc, allowing the user to select the appropriately sized disc which matches the radius of a drain pipe to be plunged. Additionally, a handle portion may be secured to the main shaft, extending in a direction orthogonal thereto, providing the user with a handle to grip during the plunging process. The handle portion further has a handle disc secured to its free end, with the handle disc having a radius between that of the upper and lower discs, providing the user with a third size disc for plunging of the drain pipe.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: November 29, 2011
    Inventors: Carlos J. Johnson, Robert Dreher
  • Patent number: D287021
    Type: Grant
    Filed: December 26, 1984
    Date of Patent: December 2, 1986
    Inventor: Carlos J. Johnson
  • Patent number: D334665
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: April 13, 1993
    Inventor: Carlos J. Johnson