Patents by Inventor Mark A. Wightman

Mark A. Wightman 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).

  • Microelectrode, Microelectrode formation, and methods of utilizing microelectrodes for charaterizing properties of localized environments and substrates
    Publication number: 20120186998
    Abstract: Microelectrodes, microelectrode formation, and methods of utilizing microelectrodes for characterizing properties of localized environments and substrates are provided. A microelectrode can include a tungsten wire comprising a shaft and a conical tip. The conical tip can include an electroactive area. Further, the microelectrode can include an electroactive coating layer covering one or more surface of the tungsten wire. The tungsten wire surfaces can include a surface of the conical tip. An insulating layer can at least partially cover the shaft.
    Type: Application
    Filed: September 18, 2007
    Publication date: July 26, 2012
    Inventors: Andre Hermans, R. Mark Wightman
  • Roll-up door lock
    Patent number: 5063764
    Abstract: A lock is described which is adapted for use in combination with a conventional latching handle assembly mounted on the bottom panel of a roll-up door mounted on a truck or the like. The lock includes a laterally movable dead bolt which, when locked, is in the pivotal path of the latching handle assembly thereby preventing the latching handle assembly from being moved to its unlocked position. A counter is also associated with the lock which visually indicates the number of times that the lock has been actuated.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: November 12, 1991
    Assignee: Convoy Security Company
    Inventors: Lynn F. Amis, Jacob T. Crittenden, Raymond J. Dyer, John P. Glynn, Richard H. Hall, Dave L. Huebner, Brian W. Olsen, Sam C. O'Connor, Charles E. Robideaux, David E. Seeley, Steven J. Sousek, Mark A. Wightman, Ronald E. Wintermute
  • Electrochemical generation of field desorption emitters
    Patent number: 4041346
    Abstract: An electrochemically generated field desorption emitter for use in mass spectrometry, and a process for forming such an emitter by immersing a metal support, as a first electrode, and a second electrode in an electrolytic liquid mixture having appropriate concentration of a metal compound, and applying a plurality of short duration, electrical pulses between the electrodes. The emitter so formed comprises an elongated metal support having a plurality of metal dendrites extending in a generally radially outwardly direction therefrom.
    Type: Grant
    Filed: May 13, 1976
    Date of Patent: August 9, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Maurice M. Bursey, Deborah M. Hinton, Martin C. Sammons, R. Mark Wightman
  • Electrochemical generation of field desorption emitters
    Patent number: 4038158
    Abstract: An electrochemically generated field desorption emitter for use in mass spectrometry, and a process for forming such an emitter by immersing a metal support, as a first electrode, and a second electrode in an electrolytic liquid mixture having appropriate concentration of a metal compound, and applying a plurality of short duration, electrical pulses between the electrodes. The emitter so formed comprises an elongated metal support having a plurality of metal dendrites extending in a generally radially outwardly direction therefrom.
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: July 26, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Maurice M. Bursey, Deborah M. Hinton, Martin C. Sammons, R. Mark Wightman