Patents by Inventor Darrel Johnson

Darrel 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).

  • Publication number: 20210230481
    Abstract: In one aspect, the disclosure relates to compositions comprising a surface-modified phosphor material comprising a phosphor material and a silane, methods of making same, and articles comprising same. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.
    Type: Application
    Filed: August 3, 2019
    Publication date: July 29, 2021
    Inventors: Wei Chen, Omar Darrel Johnson, Sunil Sahi
  • Patent number: 4878478
    Abstract: A stove with a continuously open draft provides a fire chamber peripherally configured to cause circular motion of burning gases therein to provide substantially complete combustion of fuel. A continuously open elongate draft vent is positioned above and immediately inwardly of a door window to aid cleaning of that structure and to reinforce the circular motion of combustion gases. Baffles and exhaust dampers also are configured to aid the circular motion of combustion gases in the fire chamber. Heated surfaces defining the upper fire chamber walls catalyze the combustion reaction and rearward surfaces reflect radiant energy back into the combusting fuel to further aid combustion.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: November 7, 1989
    Inventor: Darrel Johnson
  • Patent number: 4497472
    Abstract: The vegetation blocking fence edging assembly includes a fence structure (A), a plurality of elongated edging strips (B), and a plurality of fence post edging structures (C). The fence structure includes a plurality of mounting posts (10) between which a fencing medium (12) extends. The edging strip has U-shaped slots (42) at its longitudinal ends (30) which are adapted to be received around the fence mounting posts. The edging strip includes a longitudinally extending, generally J-shaped portion (32) made up of a U-shaped portion (34) for receiving the lower edge of the fence medium and a single guide edge (36) for engaging one face of the fence. Flanges (38, 40) extend from either side of the J-shaped portion at a downward angle to contact the ground. The flange portions are resilient plastic and bias the J-shaped portion and the U-shaped portion toward engagement with the fence lower edge.
    Type: Grant
    Filed: November 15, 1982
    Date of Patent: February 5, 1985
    Inventor: J. Darrel Johnson