Patents Represented by Attorney Richard A. Kretchmer
  • Patent number: 4067798
    Abstract: A method for catalytically cracking an isolated reactant feed, 80-100 volume percent of which is a substantially mono-aromatic hydrocarbon fraction boiling in the boiling range of heavy gasoline and the remainder of which is a vaporizable hydrocarbon fraction, under effective cracking conditions of cracking temperature, catalyst composition, catalyst activity, catalyst-to-feed weight ratio, and weight hourly space velocity, to produce an isolated product having increased low molecular weight olefin and low molecular weight mono-aromatic contents and a reduced sulfur content and having a high octane rating.
    Type: Grant
    Filed: February 26, 1976
    Date of Patent: January 10, 1978
    Assignee: Standard Oil Company (Indiana)
    Inventors: Frank William Hauschildt, Ralph J. Bertolacini
  • Patent number: 4021335
    Abstract: A method for removing ash, asphaltenic, metallic and sulfurous contaminants from a black oil by contacting said oil with a liquid paraffinic solvent in the presence of water.
    Type: Grant
    Filed: June 17, 1975
    Date of Patent: May 3, 1977
    Assignee: Standard Oil Company (Indiana)
    Inventor: William Ingram Beaton