Patents by Inventor Steven L. Wiker

Steven L. Wiker 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).

  • Phenol alkylation process
    Patent number: 4870215
    Abstract: Phenol is di-orthoalkylated in high yield by reacting, in a first stage, phenol containing only 1 mole of an aluminum phenoxide for each 100-800 moles of phenol with an olefin at 85.degree.-175.degree. C. until the reaction mixture contains 3 wt percent or less phenol and then, in a second stage, continuing the reaction at 25.degree.-80.degree. C. until the mixture contains a substantial amount of 2,6-di-alkylphenol.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: September 26, 1989
    Assignee: Ethyl Corporation
    Inventors: Steven L. Wiker, Charles W Matthews, Jeffrey F. King
  • Phenol alkylation process
    Patent number: 4731492
    Abstract: A process of ortho-alkylating arylhydroxides, e.g., phenol, by passing a mixture of arylhydroxide, olefin and an inert hydrocarbon diluent in the liquid phase through a bed of activated alumina at an elevated temperature and pressure. Conversion and selectivity is improved over that obtained without the diluent.
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: March 15, 1988
    Assignee: Ethyl Corporation
    Inventors: Steven L. Wiker, S. Wendell Holmes, Jr., Dixie E. Goins