Patents by Inventor David J. Lundberg

David 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).

  • Patent number: 11920102
    Abstract: A deposition composition includes a solvent comprising a hydrofluorothioether compound represented by the following general formula (I): Rf—S—Rh where Rf is a fluorinated or perfluorinated group having 2-9 carbon atoms and optionally includes one or more catenated heteroatoms or chlorine atoms, and Rh is a non-fluorinated hydrocarbon group having 1-3 carbon atoms. The deposition composition further includes a coating material that is soluble or dispersible in said solvent.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: March 5, 2024
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Jason M. Kehren, David J. Lundberg, Zai-Ming Qiu, Michael G. Costello, Michael J. Bulinski, Alexandre R. Monteil
  • Publication number: 20230087560
    Abstract: A compound having structural formula (II): where R2 is H, CH3, CF3, CH2CF2CF2H, or CH2CF2CF2CF2H; where R2f is a perfluoroalkyl group having 1-4 carbon atoms, optionally comprising either or both of a catenated nitrogen heteroatom and a catenated oxygen heteroatom; where R2f? is CF3 or CF2CF3; and where R2f? is CF3 or CF2CF3; with the proviso that when R2f? is CF3, then R2f? is CF3, and when R2 is H or CH3, then R2f is not CF3.
    Type: Application
    Filed: January 11, 2021
    Publication date: March 23, 2023
    Inventors: William M. Lamanna, Klaus Hintzer, Markus Hirschberg, David J. Lundberg
  • Publication number: 20230056641
    Abstract: A deposition composition includes a solvent comprising a hydrofluorothioether compound represented by the following general formula (I): Rf—S—Rh where Rf is a fluorinated or perfluorinated group having 2-9 carbon atoms and optionally includes one or more catenated heteroatoms or chlorine atoms, and Rh is a non-fluorinated hydrocarbon group having 1-3 carbon atoms. The deposition composition further includes a coating material that is soluble or dispersible in said solvent.
    Type: Application
    Filed: January 21, 2021
    Publication date: February 23, 2023
    Inventors: Jason M. Kehren, David J. Lundberg, Zai-Ming Qiu, Michael G. Costello, Michael J. Bulinski, Alexandre R. Monteil
  • Publication number: 20220298454
    Abstract: A composition includes a compound having structural formula (I): Rf—S—Rh (I) wherein (i) Rf is a partially fluorinated or perfluorinated group having 2 to 6 carbon atoms and optionally comprises one or more catenated heteroatoms, and (ii) Rh is a non-fluorinated hydrocarbon group having 1-3 carbon atoms and optionally comprises one or more catenated heteroatoms. The composition further includes an organic lubricant contaminant.
    Type: Application
    Filed: May 6, 2020
    Publication date: September 22, 2022
    Inventors: Michael G. Costello, Zai-Ming Qiu, David J. Lundberg, Alexandre R. Monteil
  • Publication number: 20220056376
    Abstract: A process for removing an electroluminescent material from a substrate. The process includes providing a substrate having an electroluminescent material disposed on a surface thereof. The process further includes contacting the substrate with a composition. The composition includes a hydroflourocompound an organic solvent that forms an azeotrope with the hydroflourocompound when mixed with the hydroflourocompound.
    Type: Application
    Filed: December 23, 2019
    Publication date: February 24, 2022
    Inventors: Yumi Kwon, David J. Lundberg, Karl J. Manske
  • 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
  • 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
  • Patent number: 5449525
    Abstract: A method for producing a magnetic recording medium while minimizing electrostatic charge buildup on the medium during production. The method comprises applying a liquid material over a surface of a moving web to form a continuous wet coating thereon and smoothing the wet coating with a flexible blade having two major surfaces. The flexible smoothing blade comprises a conductive layer and is positioned so that a portion of one major surface is in contact with the wet coating so that electrostatic charge on the coated web is continuously dissipated.
    Type: Grant
    Filed: January 19, 1995
    Date of Patent: September 12, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: David J. Lundberg, David R. Boston, Delbert L. Olson, William L. Kausch
  • Patent number: 5433973
    Abstract: A method of depositing a magnetic recording media coating onto a substrate, wherein the coating is substantially free of Benard Cells, the method comprising the steps of: (a) providing a dispersion comprising a polymeric binder, a pigment, and a solvent; (b) coating the dispersion onto a surface of the substrate; (c) drying the dispersion; (d) calculating values comprising .mu., .beta., and d representing the viscosity, temperature gradient, and wet caliper of the dispersion, respectively; and (e) during the course of carrying out steps (a), (b), and (c), maintaining the ratio ##EQU1## below a threshold value sufficient to substantially prevent the formation of Benard Cells in the magnetic recording media coating.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: July 18, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: David A. Wallack, Robert A. Yapel, David J. Lundberg