Patents by Inventor Daniel J. Lundberg

Daniel J. Lundberg 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).

  • Chemical process to manufacture branched-caprolactone
    Patent number: 11208394
    Abstract: Synthesizing an alkyl-caprolactone includes hydrogenating an alkyl-phenol to yield a first mixture comprising an alkyl-cyclohexanone and an alkyl-cyclohexanol; separating the alkyl-cyclohexanone from the first mixture to yield a first portion of a purified alkyl-cyclohexanone; oxidizing the first portion of the purified alkyl-cyclohexanone to yield a second mixture comprising an alkyl-caprolactone, the alkyl-cyclohexanone, and the alkyl-cyclohexanol; separating the alkyl-caprolactone from the second mixture to yield a third mixture comprising the alkyl-cyclohexanone and the alkyl-cyclohexanol; combining the third mixture and the first mixture in to yield a fourth mixture; separating the alkyl-cyclohexanone from the fourth mixture to yield a second portion of the purified alkyl-cyclohexanone; oxidizing the second portion of the purified alkyl-cyclohexanone to yield a fifth mixture comprising the alkyl-caprolactone, the alkyl-cyclohexanone, and the alkyl-cyclohexanol; separating the alkyl-caprolactone from the
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: December 28, 2021
    Assignee: Regents of the University of Minnesota
    Inventors: Paul J. Dauenhauer, Daniel J. Lundberg, David J. Lundberg, Marc A. Hillmyer
  • CHEMICAL PROCESS TO MANUFACTURE BRANCHED-CAPROLACTONE
    Publication number: 20200087276
    Abstract: Synthesizing an alkyl-caprolactone includes hydrogenating an alkyl-phenol to yield a first mixture comprising an alkyl-cyclohexanone and an alkyl-cyclohexanol; separating the alkyl-cyclohexanone from the first mixture to yield a first portion of a purified alkyl-cyclohexanone; oxidizing the first portion of the purified alkyl-cyclohexanone to yield a second mixture comprising an alkyl-caprolactone, the alkyl-cyclohexanone, and the alkyl-cyclohexanol; separating the alkyl-caprolactone from the second mixture to yield a third mixture comprising the alkyl-cyclohexanone and the alkyl-cyclohexanol; combining the third mixture and the first mixture in to yield a fourth mixture; separating the alkyl-cyclohexanone from the fourth mixture to yield a second portion of the purified alkyl-cyclohexanone; oxidizing the second portion of the purified alkyl-cyclohexanone to yield a fifth mixture comprising the alkyl-caprolactone, the alkyl-cyclohexanone, and the alkyl-cyclohexanol; separating the alkyl-caprolactone from the
    Type: Application
    Filed: September 6, 2019
    Publication date: March 19, 2020
    Inventors: Paul J. Dauenhauer, Daniel J. Lundberg, David J. Lundberg, Marc A. Hillmyer