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).
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Patent number: 10941252Abstract: 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 segmentsType: GrantFiled: October 23, 2017Date of Patent: March 9, 2021Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: 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
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Patent number: 10450333Abstract: Guanidine-functionalized particles and methods of making and using such particles.Type: GrantFiled: February 15, 2019Date of Patent: October 22, 2019Assignee: 3M Innovative Properties CompanyInventors: George W. Griesgraber, Robert T. Fitzsimons, Jr., Douglas A. Hanggi, Masayuki Nakamura, Jerald K. Rasmussen
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Publication number: 20190263972Abstract: 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 segmentsType: ApplicationFiled: October 23, 2017Publication date: August 29, 2019Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: 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
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Publication number: 20190177342Abstract: Guanidine-functionalized particles and methods of making and using such particles.Type: ApplicationFiled: February 15, 2019Publication date: June 13, 2019Inventors: George W. Griesgraber, Robert T. Fitzsimons, JR., Douglas A. Hanggi, Masayuki Nakamura, Jerald K. Rasmussen
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Patent number: 10246472Abstract: Guanidine-functionalized particles and methods of making and using such particles.Type: GrantFiled: April 17, 2017Date of Patent: April 2, 2019Assignee: 3M Innovative Properties CompanyInventors: George W. Griesgraber, Robert T. Fitzsimons, Jr., Douglas A. Hanggi, Masayuki Nakamura, Jerald K. Rasmussen
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Publication number: 20170217995Abstract: Guanidine-functionalized particles and methods of making and using such particles.Type: ApplicationFiled: April 17, 2017Publication date: August 3, 2017Inventors: George W. Griesgraber, Robert T. Fitzsimons, JR., Douglas A. Hanggi, Masayuki Nakamura, Jerald K. Rasmussen
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Patent number: 9717798Abstract: 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: GrantFiled: November 16, 2012Date of Patent: August 1, 2017Assignee: 3M Innovative Properties CompanyInventors: Louis C. Haddad, Douglas A. Hanggi, David B. Olson, Matthew T. Scholz, Dong-Wei Zhu
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Patent number: 9657038Abstract: Guanidine-functionalized particles and methods of making and using such particles.Type: GrantFiled: November 20, 2013Date of Patent: May 23, 2017Assignee: 3M Innovative Properties CompanyInventors: George W. Griesgraber, Robert T. Fitzsimons, Jr., Douglas A. Hanggi, Masayuki Nakamura, Jerald K. Rasmussen
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Publication number: 20150307526Abstract: Guanidine-functionalized particles and methods of making and using such particles.Type: ApplicationFiled: November 20, 2013Publication date: October 29, 2015Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: George W. Griesgraber, Robert T. Fitzsimons, JR., Douglas A. Hanggi, Masayuki Nakamura, Jerald K. Rasmussen
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Publication number: 20140323578Abstract: 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: ApplicationFiled: November 16, 2012Publication date: October 30, 2014Inventors: Louis C. Haddad, Douglas A. Hanggi, David B. Olson, Matthew T. Scholz, Dong-Wei Zhu
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Patent number: 5968652Abstract: 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: GrantFiled: November 10, 1998Date of Patent: October 19, 1999Assignee: 3M Innovative Properties CompanyInventors: Douglas A. Hanggi, Gaddam N. Babu, Terry L. Davis
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Patent number: 5876595Abstract: 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: GrantFiled: March 21, 1997Date of Patent: March 2, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Douglas A. Hanggi, Gaddam N. Badu, Terry L. Davis
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Patent number: 5667674Abstract: 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: GrantFiled: January 11, 1996Date of Patent: September 16, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Douglas A. Hanggi, Gaddam N. Babu, Terry L. Davis
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Patent number: 5346619Abstract: 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: GrantFiled: July 14, 1993Date of Patent: September 13, 1994Assignee: Regents of the University of MinnesotaInventors: Eric F. Funkenbusch, Peter W. Carr, Douglas A. Hanggi, Thomas P. Weber
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Patent number: 5271833Abstract: 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: GrantFiled: October 20, 1992Date of Patent: December 21, 1993Assignee: Regents of the University of MinnesotaInventors: Eric F. Funkenbusch, Peter W. Carr, Douglas A. Hanggi, Thomas P. Weber
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Patent number: 5254262Abstract: 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: GrantFiled: January 15, 1993Date of Patent: October 19, 1993Assignee: Regents of the University of MinnesotaInventors: Eric F. Funkenbusch, Peter W. Carr, Douglas A. Hanggi, Thomas P. Weber
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Patent number: 5205929Abstract: 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: GrantFiled: May 28, 1992Date of Patent: April 27, 1993Assignee: Regents of the University of MinnesotaInventors: Peter W. Carr, Eric F. Funkenbusch, Martin P. Rigney, Patrick L. Coleman, Douglas A. Hanggi, Wes A. Schafer
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Patent number: 5141634Abstract: 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: GrantFiled: February 12, 1991Date of Patent: August 25, 1992Assignee: Regents of the University of MinnesotaInventors: Peter W. Carr, Eric F. Funkenbusch, Martin P. Rigney, Patrick L. Coleman, Douglas A. Hanggi, Wes A. Schafer
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Patent number: 5108597Abstract: 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: GrantFiled: March 22, 1990Date of Patent: April 28, 1992Assignee: Regents of the University of MinnesotaInventors: Eric F. Funkenbusch, Peter W. Carr, Douglas A. Hanggi, Thomas P. Weber
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Patent number: RE34910Abstract: 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: GrantFiled: April 1, 1993Date of Patent: April 18, 1995Assignee: Regents of the University of MinnesotaInventors: Eric F. Funkenbusch, Peter W. Carr, Douglas A. Hanggi, Thomas P. Weber