Patents by Inventor Raymond H. Long

Raymond H. Long 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).

  • Coal liquefaction and hydrogenation
    Patent number: 4544476
    Abstract: In a two-stage liquefaction, hydrogenated 850.degree. F.+ residuum from the second stage is used in formulating the first stage liquefaction solvent.
    Type: Grant
    Filed: December 7, 1983
    Date of Patent: October 1, 1985
    Assignee: The Lummus Company
    Inventors: Raymond H. Long, Harvey D. Schindler
  • Separation of solids from tar sands extract
    Patent number: 4094781
    Abstract: Solids are separated from a tar sands extract by gravity settling or centrifugation in the presence of a liquid promoter which promotes and enhances the separation of the solid material. The liquid promoter has a characterization factor of at least 9.75, a 5 volume percent distillation temperature of at least 250.degree. F and a 95 volume percent distillation temperature of at least 350.degree. F and no greater than 750.degree. F. As a result, liquid product is obtained without the necessity of preliminary coking of the entire extract.
    Type: Grant
    Filed: November 10, 1976
    Date of Patent: June 13, 1978
    Assignee: The Lummus Company
    Inventors: George J. Snell, Raymond H. Long
  • Desulfurization of iron oxide pellets
    Patent number: 3993472
    Abstract: Iron oxide pellets, containing integral carbon and a desulfurizing additive, are heated up to a final reduction temperature of 1800.degree. - 2500.degree. F, with the heating over the range from 1500.degree. F to the final reduction temperature being controlled depending on the amount of integral carbon in the pellets. The pellets are reduced, with the pellets being steamed prior to the reduction or during the reduction. Pellets having a sulfur content of less than 0.03 weight percent are produced.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: November 23, 1976
    Assignee: The Lummus Company
    Inventors: Raymond H. Long, William V. Bauer
  • Desulfurization of coke
    Patent number: 3933596
    Abstract: Coke is desulfurized by calcining coke at a temperature of 1600.degree. - 2200.degree. F. in admixture with sodium carbonate, followed by direct contact with phosgene or a mixture of carbon monoxide and chlorine at a temperature of 1200.degree. - 1800.degree. F. to produce coke having sulfur contents of less than 0.5 percent.
    Type: Grant
    Filed: April 1, 1974
    Date of Patent: January 20, 1976
    Assignee: The Lummus Company
    Inventors: Raymond H. Long, Morgan C. Sze