Patents by Inventor Barry J. Swanson

Barry J. Swanson 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).

  • Process for making meta- and para-alkylphenols
    Patent number: 4532368
    Abstract: A process for making a mixture of meta- and para-alkylphenols by contacting a mixture of phenol, ortho-alkylphenol and an alkylating agent (e.g. olefins or lower alcohols) with a zeolite having a silica:alumina ratio of at least 12:1 under alkylating conditions to obtain a mixture of ortho-, meta- and para-alkylphenols and then separating at least part of the ortho-alkylphenol which is recycled to a subsequent alkylation process carried out in the same manner.
    Type: Grant
    Filed: February 1, 1984
    Date of Patent: July 30, 1985
    Assignee: Ethyl Corporation
    Inventors: Barry J. Swanson, Ronald L. Shubkin
  • Photochemical rearrangement of 2-aminopyrrolin-5-ones to aminocyclopropyl isocyanates and polymers thereof
    Patent number: 4505792
    Abstract: Subjecting 1,4-bis-[(pyrrolin-3-onyl)methylamino]-2-butyne to ultraviolet irradiation effects rearrangement in greater than 80% yield to 1,4-bis-[(isocyanatocyclopropyl)methylamino]-2-butyne. The diisocyanate is useful in the synthesis of polyurethanes and polyureas and also for the in situ photochemical generation of a cross-linking agent for polyurethanes and structurally related polymers.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: March 19, 1985
    Assignee: University Patents, Inc.
    Inventors: Tad H. Koch, Barry J. Swanson
  • 2-Aminopyrrolin 5-ones and aminocyclopropyl isocyanates therefrom
    Patent number: 4380647
    Abstract: Subjecting 1,4-bis-[(pyrrolin-3-onyl)methylamino]-2-butyne to ultraviolet irradiation effects rearrangement in greater than 80% yield to 1,4-bis-[(isocyanatocycloprolpyl)methylamino]-2-butyne. The diisocyanate is useful in the synthesis of polyurethanes and polyureas and also for the in situ photochemical generation of a cross-linking agent for polyurethanes and structurally related polymers.
    Type: Grant
    Filed: March 3, 1981
    Date of Patent: April 19, 1983
    Assignee: University Patents, Inc.
    Inventors: Tad H. Koch, Barry J. Swanson