Patents by Inventor Jacques P. Chevallier

Jacques P. Chevallier 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).

  • Shallow impurity neutralization
    Patent number: 4610731
    Abstract: A process is described for fabricating semiconductor devices in which atomic hydrogen is used to neutralize shallow donors in III-V semiconductor compounds so as to make certain areas exhibit high resistance. Also described is reverse neutralization in which heat is used to convert neutralized regions to regions with n-type conductivity.
    Type: Grant
    Filed: April 3, 1985
    Date of Patent: September 9, 1986
    Assignee: AT&T Bell Laboratories
    Inventors: Jacques P. Chevallier, William C. Dautremont-Smith, Charles W. Tu
  • Photoconductor for GaAs laser addressed devices
    Patent number: 4147667
    Abstract: An improved photoconductor for GaAs laser addressed devices sensitive to illumination at about 1.5 eV is an amorphous material containing silicon, hydrogen and a material taken from the group consisting of Ge, Sn and Pb. A preferred embodiment of this invention is amorphous Si.sub.x Ge.sub.1-x H.sub.y where x equals 0.78 to 0.93 and y equals 14-20 atomic percent.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: April 3, 1979
    Assignee: International Business Machines Corporation
    Inventors: Jacques P. Chevallier, Charles R. Guarnieri, Aare Onton, Harold Wieder