Patents by Inventor David R. P. Thatcher

David R. P. Thatcher 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).

  • Process for the production of sulfuric acid using coated catalysts
    Patent number: 4552744
    Abstract: A process is described for producing sulphuric acid from sulphur dioxide (SO.sub.2) wherein two fluid streams, in the form of a gaseous SO.sub.2 gas and oxygen (air), and a liquid, primary sulphuric acid and water, are contacted with each other and a catalyst assembly at a temperature in the range 150.degree. to 280.degree. C.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: November 12, 1985
    Assignee: Atomic Energy of Canada Limited
    Inventors: Karl T. Chuang, David R. P. Thatcher