Patents by Inventor David C. Johnston

David C. Johnston 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: 12218999
    Abstract: Techniques are described to enable selective content sharing in a video conference. In one example, a conferencing system obtains first display content from a first endpoint device in a video conference session. The conferencing system streams the first display content to a second endpoint device in the video conference session and obtains second display content from the second endpoint device. While streaming the first display content to the second endpoint device, the conferencing system streams the second display content to a third endpoint device in the video conference session and prevents streaming of the second display content to the first endpoint device.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: February 4, 2025
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: David C. White, Jr., Magnus Mortensen, Jay Kemper Johnston
  • Patent number: 12212451
    Abstract: In one embodiment, an issue analysis service obtains telemetry data from a plurality of devices in a network across a plurality of time intervals. The service detects a failure event in which a device in the network is in a failure state. The service clusters the telemetry data obtained prior to the failure event into rounds according to time intervals in which the telemetry data was collected. Each round corresponds to a particular time interval. The service applies a machine learning-based classifier to each one of the rounds of clustered telemetry data to identify one or more common traits appearing in the telemetry data for each round. The service generates a trait change report indicating a change in the one or more common traits appearing in the telemetry data across the rounds leading up to the failure event.
    Type: Grant
    Filed: September 1, 2023
    Date of Patent: January 28, 2025
    Assignee: Cisco Technology, Inc.
    Inventors: Magnus Mortensen, Jay Kemper Johnston, David C. White, Jr.
  • Publication number: 20220010593
    Abstract: A sliding door system includes a stationary door frame, a sliding door panel installed in the stationary door frame and movable between closed and open positions, and a handle assembly coupled to the sliding door panel. The handle assembly includes a handle spindle extending into a vertical stile of the sliding door panel, a cam coupled to the handle spindle within the vertical stile and movable between stowed and extended positions, and a handle coupled to the handle spindle and rotatable about a pivot axis extending through the handle spindle between first and second positions. Rotating the handle from the first position to the second position causes the cam to move from the stowed position to the extended position and into engagement with the stationary door frame, whereby the sliding door frame is forced away from the stationary door frame from the closed position to the open position.
    Type: Application
    Filed: November 25, 2019
    Publication date: January 13, 2022
    Applicant: Arconic Technologies LLC
    Inventors: Kyle A. McDaniel, Andrew C. Agliata, Scott J. Bowden, Katherine C. Freeseman, David C. Johnston, John Michael Mitchell, Clare K. Specht
  • Patent number: 4832877
    Abstract: Broadly stated, the present invention encompasses tetranuclear sulfide-bridged complexes of Cr(III) having bridging organo-carboxylate ligands. Indeed, in one embodiment, the present invention is directed toward a novel composition of matter having a complex cation of the general formula Cr.sub.4 S(RCO.sub.2).sub.8 (L).sub.4.sup.2+, wherein R represents alkyl groups having from 1 to 12 carbon atoms, L represents a ligand or ligands containing a donor atom selected from oxygen, nitrogen, carbon, and sulfur. In the complex of the present invention, the four Cr(III) atoms are bound to a central tetrahedral sulfur atom. The chromium atoms also are octahedrally coordinated with bridging carboxylates and the ligand molecule. Also, the bridging carboxylates, RCO.sub.2 of the above formula, are the same or different carboxylates.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: May 23, 1989
    Assignee: Exxon Research and Engineering Company
    Inventors: Avi Bino, David C. Johnston, Edward I. Stiefel
  • Patent number: D523040
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: June 13, 2006
    Assignee: Kennametal Inc.
    Inventors: Kenneth L. Niebauer, David C. Johnston
  • Patent number: D423024
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: April 18, 2000
    Assignee: Kennametal Inc.
    Inventors: Rudi Hartlohner, Franz Havrda, David C. Johnston
  • Patent number: D431579
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: October 3, 2000
    Assignee: Kennametal Inc.
    Inventors: Rudi Hartlohner, Franz Havrda, David C. Johnston