Patents by Inventor Paul E. Dorsey

Paul E. Dorsey 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).

  • RE.sub.x M.sub.1-x Mn.sub.y O.sub..delta. films for microbolometer-based IR focal plane arrays
    Patent number: 5854587
    Abstract: Microbolometers can be made with a thin film composition of matter having a large temperature coefficient of resistance (TCR) as compared to the same material in the bulk form. The composition is a manganite of the formulaRE.sub.x M.sub.1-x Mn.sub.y O.sub..delta.whereRE is Y and the rare earths such as La, Ce, Pr, Nb, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and combinations thereof,M is a divalent metal such as Ca, Sr, Ba, Pb, and combinations thereof,x is less than l,y is from about 0.75 to about 1.5, and.delta. is from about 2.5 to about 4.0.The microbolometer is made by applying a thin film of the composition on to a substrate such as SiN.sub.x and annealing the deposited film to remove inhomogeneities and to decrease the defects so as to increase the TCR.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: December 29, 1998
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: James Horwitz, Douglas Chrisey, John T. Caulfield, Paul E. Dorsey