Patents by Inventor Douglas A. Hanggi

Douglas A. Hanggi 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: 10941252
    Abstract: A copolymer composition that includes a silicone copolymer, methods of making the composition, and articles that include the composition, wherein the copolymer composition includes a silicone copolymer having a backbone composition that includes: silicone segments in an amount of 5 wt-% to 40 wt-%, based on the total weight of the silicone copolymer; hydrophilic segments in an amount of 40 wt-% to 75 wt-%, based on the total weight of the silicone copolymer; and reinforcing segments in an amount of 5 wt-% to 30 wt-%, based on the total weight of the silicone copolymer, wherein the reinforcing segments are derived from the reaction of one or more chain extenders with one or more multi-functional isocyanates, multi-functional carboxylic acids, multi-functional anhydrides, multi-functional esters, and/or multi-functional acid halides; wherein the silicone segments, hydrophilic segments, and reinforcing segments are connected through urea, urethane, amide, and/or oxamide linkages; wherein the hydrophilic segments
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: March 9, 2021
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Hannah C. Cohen, Amanda C. Engler, Ranjani V. Parthasarathy, Haoming Rong, Ramesh C. Kumar, Matthew T. Scholz, James P. Dizio, Audrey A. Sherman, Richard G. Hansen, Douglas A. Hanggi, Dale J. Case, David Duane Johnson
  • Patent number: 10450333
    Abstract: Guanidine-functionalized particles and methods of making and using such particles.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 22, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: George W. Griesgraber, Robert T. Fitzsimons, Jr., Douglas A. Hanggi, Masayuki Nakamura, Jerald K. Rasmussen
  • Publication number: 20190263972
    Abstract: A copolymer composition that includes a silicone copolymer, methods of making the composition, and articles that include the composition, wherein the copolymer composition includes a silicone copolymer having a backbone composition that includes: silicone segments in an amount of 5 wt-% to 40 wt-%, based on the total weight of the silicone copolymer; hydrophilic segments in an amount of 40 wt-% to 75 wt-%, based on the total weight of the silicone copolymer; and reinforcing segments in an amount of 5 wt-% to 30 wt-%, based on the total weight of the silicone copolymer, wherein the reinforcing segments are derived from the reaction of one or more chain extenders with one or more multi-functional isocyanates, multi-functional carboxylic acids, multi-functional anhydrides, multi-functional esters, and/or multi-functional acid halides; wherein the silicone segments, hydrophilic segments, and reinforcing segments are connected through urea, urethane, amide, and/or oxamide linkages; wherein the hydrophilic segments
    Type: Application
    Filed: October 23, 2017
    Publication date: August 29, 2019
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: HANNAH C. COHEN, AMANDA C. ENGLER, RAN JAN I V. PARTHASARATHY, HAOMING RONG, RAMESH C. KUMAR, MATTHEW T. SCHOLZ, JAMES P. DIZIO, AUDREY A. SHERMAN, RICHARD G. HANSEN, DOUGLAS A. HANGGI, DALE J. CASE, DAVID D. JOHNSON
  • Publication number: 20190177342
    Abstract: Guanidine-functionalized particles and methods of making and using such particles.
    Type: Application
    Filed: February 15, 2019
    Publication date: June 13, 2019
    Inventors: George W. Griesgraber, Robert T. Fitzsimons, JR., Douglas A. Hanggi, Masayuki Nakamura, Jerald K. Rasmussen
  • Patent number: 10246472
    Abstract: Guanidine-functionalized particles and methods of making and using such particles.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: April 2, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: George W. Griesgraber, Robert T. Fitzsimons, Jr., Douglas A. Hanggi, Masayuki Nakamura, Jerald K. Rasmussen
  • Publication number: 20170217995
    Abstract: Guanidine-functionalized particles and methods of making and using such particles.
    Type: Application
    Filed: April 17, 2017
    Publication date: August 3, 2017
    Inventors: George W. Griesgraber, Robert T. Fitzsimons, JR., Douglas A. Hanggi, Masayuki Nakamura, Jerald K. Rasmussen
  • Patent number: 9717798
    Abstract: A composition is disclosed. The composition comprises at least one polymeric colorant having a polymer component with a colorant component covalently bound thereto, a medicament, and a liquid vehicle. The at least one colorant component does not react directly or indirectly with the medicament. Methods of using the polymeric colorants, including a method for the preparation of skin as a site for a surgical procedure and a method of treating a medical condition, are also provided.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: August 1, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Louis C. Haddad, Douglas A. Hanggi, David B. Olson, Matthew T. Scholz, Dong-Wei Zhu
  • Patent number: 9657038
    Abstract: Guanidine-functionalized particles and methods of making and using such particles.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: May 23, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: George W. Griesgraber, Robert T. Fitzsimons, Jr., Douglas A. Hanggi, Masayuki Nakamura, Jerald K. Rasmussen
  • Publication number: 20150307526
    Abstract: Guanidine-functionalized particles and methods of making and using such particles.
    Type: Application
    Filed: November 20, 2013
    Publication date: October 29, 2015
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: George W. Griesgraber, Robert T. Fitzsimons, JR., Douglas A. Hanggi, Masayuki Nakamura, Jerald K. Rasmussen
  • Publication number: 20140323578
    Abstract: A composition is disclosed. The composition comprises at least one polymeric colorant having a polymer component with a colorant component covalently bound thereto, a medicament, and a liquid vehicle. The at least one colorant component does not react directly or indirectly with the medicament. Methods of using the polymeric colorants, including a method for the preparation of skin as a site for a surgical procedure and a method of treating a medical condition, are also provided.
    Type: Application
    Filed: November 16, 2012
    Publication date: October 30, 2014
    Inventors: Louis C. Haddad, Douglas A. Hanggi, David B. Olson, Matthew T. Scholz, Dong-Wei Zhu
  • Patent number: 5968652
    Abstract: The present invention encompasses novel coated particles that are well suited for use as absorption media in chromatographic processes. The coated particles comprise a substrate, such as aluminum, silicon, titanium or zirconium oxide particles, containing polymerized silane moieties on a surface of the substrate. The silane moieties include two or three olefinic groups as well as at least on useful ligand. Methods of preparing these coated particles are also described.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: October 19, 1999
    Assignee: 3M Innovative Properties Company
    Inventors: Douglas A. Hanggi, Gaddam N. Babu, Terry L. Davis
  • Patent number: 5876595
    Abstract: An adsorption medium that includes a finely divided substrate provided on at least a portion of its surface with the polymerization product of a silane that includes (a) two or three olefinic groups having the formula --(CH.sub.2).sub.m CH.dbd.CH.sub.2, where m is between 0 and 3, inclusive, and (b) at least one ligand selected to interact with a substance brought into contact with the adsorption medium to adsorb at least a portion of the substance on the surface of the adsorption medium.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: March 2, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Douglas A. Hanggi, Gaddam N. Badu, Terry L. Davis
  • Patent number: 5667674
    Abstract: An adsorption medium that includes a finely divided substrate provided on at least a portion of its surface with the polymerization product of a silane that includes (a) two or three olefinic groups having the formula --(CH.sub.2).sub.m CH.dbd.CH.sub.2, where m is between 0 and 3, inclusive, and (b) at least one ligand selected to interact with a substance brought into contact with the adsorption medium to adsorb at least a portion of the substance on the surface of the adsorption medium.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: September 16, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Douglas A. Hanggi, Gaddam N. Babu, Terry L. Davis
  • Patent number: 5346619
    Abstract: Carbon-clad zirconium oxide particles are disclosed which are useful in sorbent applications, particularly as packing materials for High Performance Liquid Chromatography (HPLC). A method for the preparation of chromatographic support material is also disclosed which utilizes low pressure.
    Type: Grant
    Filed: July 14, 1993
    Date of Patent: September 13, 1994
    Assignee: Regents of the University of Minnesota
    Inventors: Eric F. Funkenbusch, Peter W. Carr, Douglas A. Hanggi, Thomas P. Weber
  • Patent number: 5271833
    Abstract: Polymer-coated carbon-clad inorganic oxide particles are disclosed which are useful in sorbent applications, particularly as packing materials for High Performance Liquid Chromatography (HPLC). A method for the preparation of a chromatographic support material is also disclosed which comprises coating carbon-clad inorganic oxide particles with a monomer or oligomer and cross-linking the monomer or oligomer.
    Type: Grant
    Filed: October 20, 1992
    Date of Patent: December 21, 1993
    Assignee: Regents of the University of Minnesota
    Inventors: Eric F. Funkenbusch, Peter W. Carr, Douglas A. Hanggi, Thomas P. Weber
  • Patent number: 5254262
    Abstract: Carbon-clad zirconium oxide particles are disclosed which are useful in sorbent applications, particularly as packing materials for High Performance Liquid Chromatography (HPLC). A method for the preparation of chromatographic support material is also disclosed which utilizes low pressure.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: October 19, 1993
    Assignee: Regents of the University of Minnesota
    Inventors: Eric F. Funkenbusch, Peter W. Carr, Douglas A. Hanggi, Thomas P. Weber
  • Patent number: 5205929
    Abstract: The present invention provides a stable stationary phase for chromatography which comprises porous ZrO.sub.2 spherules coated with a cross-linked polymer coating wherein said coated spherules have a pore size from about 20-500 .ANG. and a particle diameter range of about 0.5-500 microns, and are stable in basic media to pHs of up to about 14.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: April 27, 1993
    Assignee: Regents of the University of Minnesota
    Inventors: Peter W. Carr, Eric F. Funkenbusch, Martin P. Rigney, Patrick L. Coleman, Douglas A. Hanggi, Wes A. Schafer
  • Patent number: 5141634
    Abstract: The present invention provides a stable stationary phase for chromatography which comprises porous ZrO.sub.2 spherules coated with a cross-linked polymer coating wherein said coated spherules have a pore size from about 20-500 .ANG. and a particle diameter range of about 0.5-500 microns, and are stable in basic media to pHs of up to about 14.
    Type: Grant
    Filed: February 12, 1991
    Date of Patent: August 25, 1992
    Assignee: Regents of the University of Minnesota
    Inventors: Peter W. Carr, Eric F. Funkenbusch, Martin P. Rigney, Patrick L. Coleman, Douglas A. Hanggi, Wes A. Schafer
  • Patent number: 5108597
    Abstract: Carbon-clad zirconium oxide particles are disclosed which are useful in sorbent applications, particularly as packing materials for High Performance Liquid Chromatography (HPLC). A method for the preparation of chromatographic support material is also disclosed which utilizes low pressure.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: April 28, 1992
    Assignee: Regents of the University of Minnesota
    Inventors: Eric F. Funkenbusch, Peter W. Carr, Douglas A. Hanggi, Thomas P. Weber
  • Patent number: RE34910
    Abstract: Carbon-clad zirconium oxide particles are disclosed which are useful in sorbent applications, particularly as packing materials for High Performance Liquid Chromatography (HPLC). A method for the preparation of chromatographic support material is also disclosed which utilizes low pressure.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: April 18, 1995
    Assignee: Regents of the University of Minnesota
    Inventors: Eric F. Funkenbusch, Peter W. Carr, Douglas A. Hanggi, Thomas P. Weber