Patents Assigned to Ehtyl Corporation
  • Method of operating a refinery to reduce atmospheric pollution
    Patent number: 5599357
    Abstract: Methods and compositions for reducing toxic compounds emissions and the maximum reactivity of exhaust products emitted by spark-ignition internal combustion engines. Gasoline having a minimum target octane number is formed by blending together base fuel blending components and at least one cyclopentadienyl manganese tricarbonyl compound in an amount equivalent to up to about 0.03 gram of manganese per gallon.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: February 4, 1997
    Assignee: Ehtyl Corporation
    Inventor: Thomas A. Leeper
  • Transhalogenation of halophosphorus compounds
    Patent number: 4929745
    Abstract: Phosphorus compounds having at least one chlorine, bromine or iodine bonded directly to phosphorus are transhalogenated with fluorine by reaction with a hydrogen fluoride salt of a pyridine-type nitrogen base, e.g. pyridine hydrofluoride in an inert solvent.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: May 29, 1990
    Assignee: Ehtyl Corporation
    Inventors: Kestutis A. Keblys, Meng-Sheng Ao, Lester P. J. Burton