Patents by Inventor Lee F. Donaghey

Lee F. Donaghey 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).

  • Resistive hydrocarbon leak detector
    Patent number: 4631952
    Abstract: An apparatus and method for sensing organic liquids, vapors and gases which includes a resistivity sensor means comprising an intimate admixture of conductive particles and a material capable of swelling the presence of the liquid, gas or vapor to be detected and an electrical contact thereto.
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: December 30, 1986
    Assignee: Chevron Research Company
    Inventor: Lee F. Donaghey
  • Age and heat stabilized photovoltaic cells
    Patent number: 4366336
    Abstract: Improved age and heat stabilized photovoltaic solar cells comprising a semiconducting layer, a barrier layer containing the metal M.sub.1 and a stabilizing metal electrode containing two or more metals, one of which is M.sub.1, such that the tendency for M.sub.1 to diffuse between the electrode and the barrier layer is approximately zero.
    Type: Grant
    Filed: October 16, 1980
    Date of Patent: December 28, 1982
    Assignee: Chevron Research Company
    Inventor: Lee F. Donaghey
  • Process for preparing photovoltaic cells having increased adhesion of the semi-conducting layer and produced thereby to the conducting layer
    Patent number: 4234353
    Abstract: Improved adhesion of the semi-conducting layer to the conducting layer in a thin film photovoltaic cell is obtained by incorporating a minor amount of the element or elements of the conducting layer in the semi-conducting layer.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: November 18, 1980
    Assignee: Chevron Research Company
    Inventor: Lee F. Donaghey