Patents by Inventor Frank F. Tao

Frank F. Tao 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).

  • Coking and gasification process
    Patent number: 4597775
    Abstract: An improved coking process for normally solid carbonaceous materials wherein the yield of liquid product from the coker is increased by adding ammonia or an ammonia precursor to the coker. The invention is particularly useful in a process wherein coal liquefaction bottoms are coked to produce both a liquid and a gaseous product. Broadly, ammonia or an ammonia precursor is added to the coker ranging from about 1 to about 60 weight percent based on normally solid carbonaceous material and is preferably added in an amount from about 2 to about 15 weight percent.
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: July 1, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventors: Rustom M. Billimoria, Frank F. Tao
  • Integrated process for the production of hydrocarbons from coal or the like in which fines from gasifier are coked with heavy hydrocarbon oil
    Patent number: 4113602
    Abstract: Char fines produced by the gasification of coal or other carbonaceous solids are coked in the presence of heavy hydrocarbon oils, preferably 1000.degree. F.+ bottoms products from a coal liquefaction process, to produce gaseous products, liquids, and larger coke particles. The coke particles thus produced may be fed to the gasifier for the production of additional gaseous products which can be used as fuel, employed as a source of hydrogen for coal liquefaction operations, or utilized for the production of hydrocarbon liquids.
    Type: Grant
    Filed: June 8, 1976
    Date of Patent: September 12, 1978
    Assignee: Exxon Research & Engineering Co.
    Inventors: Martin L. Gorbaty, Frank F. Tao, Peter S. Maa