Patents by Inventor Mark P. Smith

Mark P. Smith 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).

  • Method of detecting a short incident during electrochemical processing and a system therefor
    Patent number: 6361678
    Abstract: The present invention provides a method of detecting a short incident in an electrochemical cell (e.g., a Simons electrochemical fluorination cell or bipolar flow cell) using means for detecting vibration to detect vibration of an external piece on the cell. The present invention further provides a system for detecting a short incident in an electrochemical cell.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: March 26, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: William V. Childs, Christopher L. Gross, Mark P. Smith, Eric A. Schotz
  • Electrically regenerable diesel particulate filter cartridge and filter
    Patent number: 5656048
    Abstract: An electrically regenerable diesel particulate filter cartridge and filter comprising an electrically, variably resistive sheet(s) or tube which, when energized, provide sufficient heat to burn off soot particulates entrapped in the filter media.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: August 12, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mark P. Smith, Ryan C. Shirk
  • Electrically regenerable diesel particulate filter cartridge and filter
    Patent number: 5409669
    Abstract: An electrically regenerable diesel particulate filter cartridge and filter comprising a slotted electrically resistive tube which, when energized, heats the filter media to a temperature sufficient to allow the trapped soot particulates to burn.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: April 25, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mark P. Smith, Richard L. Bloom, Thomas J. Conway
  • Electrically regenerable diesel particulate trap
    Patent number: 5258164
    Abstract: An electrically regenerable diesel particulate trap or filter comprising an electrically resistive expanded metal sheet or sleeve which when energized heats the filter element to a temperature sufficient to allow the trapped soot particulates to burn.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: November 2, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard L. Bloom, William T. Fay, Joel H. Sabean, Mark P. Smith
  • Diesel particulate trap of perforated tubes having laterally offset cross-wound wraps of inorganic yarn
    Patent number: 5248481
    Abstract: An efficient, economical, compact diesel particulate trap has a plurality of perforated hollow tubes, on each of which a heat-resistant yarn is helically cross-wound to provide a plurality of layers that function as a filtering element. The yarn, which preferably is a continuous-filament ceramic yarn, has a core from which filaments or fiber segments project outwardly and intermesh with fiber segments of laterally spaced cores to provide traps. The cores of yarn convolutions of at least one layer are laterally offset from the cores of convolutions of an adjacent layer to deflect into tortuous paths gases flowing generally radially through the filtering element.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: September 28, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard L. Bloom, Troy K. Ista, Mark P. Smith