Patents Examined by Davis. C.
  • Aromatization process and catalyst
    Patent number: 4191637
    Abstract: Paraffinic, olefinic and naphthenic hydrocarbons are converted to aromatic hydrocarbons by contacting the same at elevated temperatures with a catalyst comprising an alumina-supported composite of platinum, chlorine and a minor proportion of cesium, with or without other added metals such as iridium, rhodium, rhenium and the like.
    Type: Grant
    Filed: August 14, 1978
    Date of Patent: March 4, 1980
    Assignee: Union Oil Company of California
    Inventors: Steven D. Light, John W. Ward
  • Method of making alpha-olefin oligomers
    Patent number: 4045508
    Abstract: The trimer to tetramer ratio of an alpha-olefin oligomer is varied over a significant range in a continuous, multi-stage alpha-olefin oligomerization process including a first stage tank reactor and a final tube reactor by controlling the amount of conversion taking place in each stage. The multi-stage process is used to prepare various poly(l-decene) oligomer mixtures having different oligomer proportions for use as synthetic lubricants.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: August 30, 1977
    Assignee: Gulf Research & Development Company
    Inventors: Barrett L. Cupples, William J. Heilman, A. Norman Kresge