Patents by Inventor John L. Clement

John L. Clement 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).

  • Process control system with integrated safety control system
    Patent number: 6647301
    Abstract: A process control system receiving input signals from a controlled apparatus and using the input signals in determining at least one output signal modifying the characteristics of at least one respective control device in the controlled apparatus where the source code for the general control of the apparatus and the source code for the safety shutdown system of the apparatus are compiled to control code in a unified compilation.
    Type: Grant
    Filed: January 12, 2000
    Date of Patent: November 11, 2003
    Assignee: Dow Global Technologies Inc.
    Inventors: Edward R. Sederlund, Ernst W. Quelle, Helmut A. Bezecny, Johannes C. Kanse, Robert J. Lindesmith, John L. Clement, Donald Grinwis, Eloy Baca, Jr., Dennis J. Dunlap, Brent M. Frank, Augustine K. Tibazarwa
  • Programmable graphics panel
    Patent number: 5726668
    Abstract: A graphics display system including one or more display panels having a plurality of lights, a graphics panel data processor including at least one microprocessor, logic for establishing a correspondence between the process variables and selected lights, logic for determining the current state of each of the process variables and transmitting a signal to the corresponding light(s) on the panel to activate the light depending on the current state of the corresponding process variable, and communication means for rapid periodic communication of the process variable data from a process control computer utilizing the graphics display system to each of the panels in the system.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: March 10, 1998
    Assignee: The Dow Chemical Company
    Inventor: John L. Clement
  • Multipurpose tool for a muzzle loading cap lock firearm
    Patent number: 4817321
    Abstract: A multipurpose tool for a cap lock muzzle loading firearm. The combination tool includes a number of disengageable tools which are used in the charging and priming of a firearm, and following discharge, removal of spent or unfired caps and removal with cleaning and/or replacement of the nipple if conditions merit. The combination of the tool components may be varied for servicing a particulate part of the firearm.
    Type: Grant
    Filed: January 22, 1980
    Date of Patent: April 4, 1989
    Assignee: K. W. Thompson Tool Co., Inc.
    Inventor: John L. Clement