Patents by Inventor Thomas O. Mason

Thomas O. Mason 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).

  • p-Type transparent conducting oxides and methods for preparation
    Patent number: 7951348
    Abstract: A facile, low temperature and low pressure method for the preparation of a wide range of phase pure ABO2 compositions.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: May 31, 2011
    Assignee: Northwestern University
    Inventors: Dean Y. Shahriari, Antoine Barnabé, Thomas O. Mason, Kenneth R. Poeppelmeier
  • p-Type transparent conducting oxides and methods for preparation
    Patent number: 6979435
    Abstract: A facile, low temperature and low pressure method for the preparation of a wide range of phase pure ABO2 compositions.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: December 27, 2005
    Assignee: Northwestern University
    Inventors: Dean Y. Shahriari, Antoine Barnabé, Thomas O. Mason, Kenneth R. Poeppelmeier
  • Graphite encapsulated nanophase particles produced by a tungsten arc method
    Patent number: 5472749
    Abstract: A method of synthesizing encapsulated nanocrystals inside protective shells is disclosed. This method produces nanocrystals of metals, alloys, and compounds which are individually encapsulated by protective graphite shells which completely separate the nanocrystals from the environment. A separation method is also disclosed which eliminates most of all other debris except the encapsulated nanocrystals from the preparation product.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: December 5, 1995
    Assignee: Northwestern University
    Inventors: Vinayak P. Dravid, Mao-Hua Teng, Jonathon J. Host, Brian R. Elliott, D. Lynn Johnson, Thomas O. Mason, Julia R. Weertman, J.-H. Hwang
  • HF separation in a carbonylation process
    Patent number: 4661296
    Abstract: In the preparation of a carboxylic acid by the carbonylation of an olefin in the presence of hydrofluoric acid catalyst, the hydrofluoric acid is isolated from the carboxylic acid by means of an ion-permeable membrane and the thus-isolated hydrofluoric acid can be recycled to again catalyze the carbonylation reaction.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: April 28, 1987
    Assignee: Ashland Oil, Inc.
    Inventors: Dace Grote, Bhupendra C. Trivedi, Thomas O. Mason
  • Liquid-liquid extraction of isobutyric acid from aqueous HF solutions thereof
    Patent number: 4270983
    Abstract: A method for recovering isobutyric acid from a solution thereof in concentrated aqueous hydrogen fluoride, the latter having served as the reaction medium for effecting the carbonylation of propylene. The method features the partial removal of anhydrous hydrogen fluoride from said solution to provide an aqueous phase of reduced hydrogen fluoride content from whence the isobutyric acid is extracted with optimum efficiency with an immiscible organic solvent.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: June 2, 1981
    Assignee: Ashland Oil, Inc.
    Inventors: Bhupendra C. Trivedi, Dace Grote, Thomas O. Mason