Patents by Inventor Fred Keller

Fred Keller 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: 20240119169
    Abstract: A computing system may receive a schema of user interface comprising an arrangement of interface elements, each element configured to display data from cells of a database. The system may receive a user permission for the user interface and an element permission for an interface element. The system may generate a policy object for the user interface based on the user permission and the element permission. The policy object specifies which cells of the database can be accessed by the user interface. The system may receive a query from a client device associated with a user to implement a local instance of the user interface. The system may serve the query according to the policy object, where serving the query includes providing data from the database that the user interface provides access to without providing other data from the database that should not be accessible according to the policy object.
    Type: Application
    Filed: October 10, 2023
    Publication date: April 11, 2024
    Inventors: Raghav Sethi, Stephen Beesley Ball, Emmett Fred Nicholas, Caleb Wesley Meredith, Anuj Bheda, Samuel Gilbert Keller
  • Publication number: 20240093741
    Abstract: A brake lining system for a disc brake of a rail vehicle is shown and described, with a pad holder and with at least one brake pad connected to the pad holder, preferably with two brake pads, and with a sensor device with a sensor unit having at least one wear sensor for determining a state of wear of the brake pad.
    Type: Application
    Filed: January 6, 2022
    Publication date: March 21, 2024
    Applicant: BECORIT GmbH
    Inventors: Fred Keller, Tomas Tot, Jan Füser
  • Patent number: 6660506
    Abstract: A process of converting lignocellulosic biomass to ethanol, comprising hydrolyzing lignocellulosic materials by subjecting dried lignocellulosic material in a reactor to a catalyst comprised of a dilute solution of a strong acid and a metal salt to lower the activation energy (i.e., the temperature) of cellulose hydrolysis and ultimately obtain higher sugar yields.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: December 9, 2003
    Assignee: Midwest Research Institute
    Inventors: Quang A. Nguyen, Fred A. Keller, Melvin P. Tucker
  • Publication number: 20030199049
    Abstract: In a process for converting lingnocellulosic biomass to ethanol, the improvement of obtaining higher fermentable soluble sugar yields by drying acid impregnated biomass particles, comprising:
    Type: Application
    Filed: February 7, 2003
    Publication date: October 23, 2003
    Inventors: Quang A. Nguyen, Fred A. Keller, Melvin P. Tucker
  • Patent number: 6498029
    Abstract: Strains of the yeast Pichia stipitis NPw9 (ATCC PTA-3717) useful for the production of ethanol using oxygen for growth while fermenting normally toxic lignocellulosic prehydrolysates.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: December 24, 2002
    Assignee: Midwest Research Institute
    Inventors: Fred A. Keller, Jr., Quang A. Nguyen
  • Publication number: 20010036659
    Abstract: Strains of the yeast Pichia stipitis NPw9 useful for the production of ethanol using oxygen for growth while fermenting normally toxic lignocellulosic prehydrolysates.
    Type: Application
    Filed: June 21, 2001
    Publication date: November 1, 2001
    Inventors: Fred A. Keller, Quang A. Nguyen
  • Patent number: 5881511
    Abstract: A concrete block is provided having half dovetail sections at opposite ends of the block arranged so that when placed together the dovetailed sections on adjoining blocks form a full dovetailed section which is just large enough to be received within a dovetail groove in the central portion of an adjacent identical block. The concrete blocks are provided with upper and lower longitudinal grooves for longitudinal members having the same exterior shape. In one form of the invention one side of the block may be made into a plant receptacle by providing a hollowed out section oriented upwardly. Insulating concrete blocks may also be combined with blocks formed of structural concrete to provide an interlocked wall having a portion of the wall made from insulated concrete material and another portion of the wall made from structural concrete material.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: March 16, 1999
    Inventor: Fred Keller, Jr.
  • Patent number: 5096507
    Abstract: The present application describes a method of applying a firmly adhering cerium misch metal coating to the surface of a splinter-active component of an incendiary splinter projectile, namely to the outer lining and/or the inner lining of a steel projectile casing possibly pre-fragmented through structural weakening or to the surface of construction splinters of steel, hard metal or heavy metal, by using a splinter-active component containing as adhesion promoter for its basis metal and for the cerium misch metal at least one metal in the form of a matrix for the basic metal or as alloying component of the basic metal or in the form of an intermediate layer on the splinter-active component, the affinity of this metal to cerium misch metal being higher than the affinity of the basic metal of the splinter-active component, and by employing a low-pressure wire spraying method for the coating of the splinter-active component with molten cerium misch metal, said coated component being tempered in the usual manner a
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: March 17, 1992
    Assignee: Buck Werke GmbH & Co.
    Inventors: Claus Lohberger, Willibald Kalcher, Fred Keller, Herbert Gartner, Gunther Sandner
  • Patent number: 4873207
    Abstract: A ceramic aggregate for concrete is made from a mixture of clay and dried organic garbage in a ratio of about three parts by volume of organic garbage to about one part by volume clay. The mixture is shaped into pancake-shaped pellets and fired at a temperature in excess of the vitrification point of the clay to cause the surface of the pellets to melt and harden the pellets.
    Type: Grant
    Filed: May 3, 1988
    Date of Patent: October 10, 1989
    Inventor: Fred Keller, Jr.
  • Patent number: 4780433
    Abstract: A ceramic composition to make cement with insulating properties is a mixture of cement, ceramic grog and ceramic aggregate beads, the ceramic grog and aggregate being a mixture of clay and dried organic mulch. After firing, the resulting ceramic product is porous. When added to the cement, the porous ceramic grog and aggregate greatly enhance the insulation qualities of the resultant cement structure. The dried organic mulch is formed from pellets produced from commercially reclaimed garbage.
    Type: Grant
    Filed: January 13, 1988
    Date of Patent: October 25, 1988
    Inventor: Fred Keller, Jr.
  • Patent number: 4740486
    Abstract: A composition for building blocks is a mixture of cement, ceramic grog and ceramic aggregate beads. The ceramic grog and aggregate are formed as a mixture of clay and dried organic mulch. After firing, the resulting ceramic product is porous. When added to the cement, the porous ceramic grog and aggregate greatly enhance the insulation qualities of the resultant cement structure.
    Type: Grant
    Filed: October 30, 1986
    Date of Patent: April 26, 1988
    Inventor: Fred Keller, Jr.
  • Patent number: D292104
    Type: Grant
    Filed: July 14, 1983
    Date of Patent: September 29, 1987
    Inventor: Fred Keller, Jr.
  • Patent number: D300862
    Type: Grant
    Filed: April 24, 1986
    Date of Patent: April 25, 1989
    Inventor: Fred Keller, Jr.