Patents by Inventor Robert F. Johnson

Robert F. 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: 11067221
    Abstract: A system includes a support structure and a sanitation device secured to the support structure, the sanitation device is configured to dispense a material for removing germs. The method includes securing the sanitation device to the support structure and dispensing a sanitation fluid from the sanitation device.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: July 20, 2021
    Inventors: Robert F. Johnson, Homer L. Cole, Jamie Moore
  • Patent number: 9564071
    Abstract: A support device for a hollow traffic marker utilizing a base having a foot positioned at the ground surface. A boss extends from the base. A flexible sleeve positions over the outer surface of the boss, the hollow traffic marker lies within the flexible sleeve. A gap within the flexible sleeve separates the first and second spacers.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: February 7, 2017
    Inventor: Robert F Johnson
  • Patent number: 9165488
    Abstract: A support device for a hollow traffic marker utilizing a base having a foot positioned at the ground surface. A boss extends from the base and includes a cavity. A first spacer is held within the boss cavity by a fastener. A flexible sleeve positioned over the outer surface of the boss a hollow traffic marker connected to a second spacer by a fastener lies within the flexible sleeve. A gap within the flexible sleeve separates the first and second spacers.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: October 20, 2015
    Inventor: Robert F. Johnson
  • Patent number: 6719484
    Abstract: A marker support for use on a ground surface utilizing a base member having a flexible body. The base member includes a first surface with a plurality of flaps which extend outwardly from the same. The second surface is intended to contact the ground. An upright member is positioned to extend outwardly from the first surface and includes an area for accommodating the plurality of flaps. The plurality of flaps are linked to the base member by an element located within the recess.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: April 13, 2004
    Inventor: Robert F. Johnson
  • Patent number: 5443111
    Abstract: For a steel mold, one or more titanium melt inlet-forming members are provided for cooperating with the steel mold members to form an melt ingate that communicates to the mold cavity for supplying the melt thereto in a manner to avoid harmful iron contamination of the melt during casting. The mold body-to-mold cavity volume ratio is controlled between 10:1 to 0.5:1 to minimize casting surface defects and mold wear/damage.
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: August 22, 1995
    Assignee: Howmet Corporation
    Inventors: Gregory N. Colvin, Leonard L. Ervin, Robert F. Johnson
  • Patent number: 5287910
    Abstract: Titanium based and nickel based castings are made by casting a suitable melt having a relatively low melt superheat into a mold cavity defined by one or more low carbon steel or titanium mold members where the melt solidifies to form the desired casting. The melt super-heat is limited so as not to exceed about 150.degree. F. above the liquidus temperature of the particular melt being cast. For a steel mold, one or more titanium melt inlet-forming members are provided for cooperating with the steel mold members to form an melt ingate that communicates to the mold cavity for supplying the melt thereto in a manner to avoid harmful iron contamination of the melt during casting. The mold body-to-mold cavity volume ratio is controlled between 10:1 to 0.5:1 to minimize casting surface defects and mold wear/damage.
    Type: Grant
    Filed: September 11, 1992
    Date of Patent: February 22, 1994
    Assignee: Howmet Corporation
    Inventors: Gregory N. Colvin, Leonard L. Ervin, Robert F. Johnson
  • Patent number: 4172741
    Abstract: Radiant energy, preferably that of a laser, is focused onto the surface of a silicon integrated circuit that contains a thin layer doped to the opposite conductivity type of the underlying silicon. The thin layer can be trimmed so as to tailor its conductivity. Such layers when used in JFET, diode, bipolar transistor, or resistor structures can therefore be precision trimmed. In particular, JFET pairs can be trimmed to a very close match.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: October 30, 1979
    Assignee: National Semiconductor Corporation
    Inventor: Robert F. Johnson