Patents by Inventor Andrew J. Lovinger

Andrew J. Lovinger 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).

  • Device comprising n-channel semiconductor material
    Patent number: 6387727
    Abstract: The invention provides a device comprising an improved n-channel semiconducting film, the film formed from a fused-ring tetracarboxylic diimide compound which exhibits a field effect electron mobility greater than 0.001 cm2/Vs, advantageously greater than 0.03 cm2/Vs, in film form. Contemplated compounds include naphthalene 1,4,5,8, tetracarboxylic acid diimides, naphthalene 2,3,6,7 tetracarboxylic acid diimides, anthracene 2,3,6,7-tetracarboxylic acid diimides, and heterocyclic variants thereof. The n-channel compounds are capable of being significantly soluble in common organic solvents, allowing for solution deposition of active semiconductor films, and are also capable of possessing significant volatility, such that vapor phase deposition, where desired, is relatively facile. It is also possible for the compounds to display the desirably high n-channel mobilities and on/off ratios even when operated in air.
    Type: Grant
    Filed: January 3, 2000
    Date of Patent: May 14, 2002
    Assignee: Agere Systems Guardian Corp.
    Inventors: Howard Edan Katz, Wenjie Li, Andrew J Lovinger
  • Device comprising n-channel semiconductor material
    Patent number: 6252245
    Abstract: The invention provides a device comprising an improved n-channel semiconducting film, the film formed from a fused-ring tetracarboxylic diimide compound which exhibits a field effect electron mobility greater than 0.001 cm2/Vs, advantageously greater than 0.03 cm2/Vs, in film form. Contemplated compounds include naphthalene 1,4,5,8 tetracarboxylic acid diimides, naphthalene 2,3,6,7 tetracarboxylic acid diimides, anthracene 2,3,6,7-tetracarboxylic acid diimides, and heterocyclic variants thereof. The n-channel compounds are capable of being significantly soluble in common organic solvents, allowing for solution deposition of active semiconductor films, and are also capable of possessing significant volatility, such that vapor phase deposition, where desired, is relatively facile. It is also possible for the compounds to display the desirably high n-channel mobilities and on/off ratios even when operated in air.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: June 26, 2001
    Inventors: Howard Edan Katz, Wenjie Li, Andrew J. Lovinger
  • Conductive adhesive system including a conductivity enhancer
    Patent number: 4356505
    Abstract: An electric conductive adhesive system includes a hydroxy terminated ether or ester thereof which serves as a conductivity enhancer. Conductivity levels attained exceed those of prior art systems.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: October 26, 1982
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Andrew J. Lovinger, Louis H. Sharpe