Patents by Inventor Robert T. Fitzsimons, Jr.

Robert T. Fitzsimons, Jr. 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: 10144760
    Abstract: A substrate comprising a crosslinked polymer primer layer, and grafted thereto a ligand-functionalized polymer is provided. The grafted polymer has the requisite affinity for binding neutral or negatively charged biomaterials, such as cells, cell debris, bacteria, spores, viruses, nucleic acids, and proteins, at pH's near or below the pI's of the biomaterials.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: December 4, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Catherine A. Bothof, Kannan Seshadri, James I. Hembre, Robert T. Fitzsimons, Jr., George W. Griesgraber, Yi He
  • Publication number: 20180217035
    Abstract: An article that can be used for biomaterial capture comprises (a) a porous substrate; and (b) borne on the porous substrate, a polymer comprising interpolymerized units of at least one monomer consisting of (1) at least one monovalent ethylenically unsaturated group, (2) at least one monovalent ligand functional group selected from acidic groups, basic groups other than guanidino, and salts thereof, and (3) a multivalent spacer group that is directly bonded to the monovalent groups so as to link at least one ethylenically unsaturated group and at least one ligand functional group by a chain of at least six catenated atoms.
    Type: Application
    Filed: March 27, 2018
    Publication date: August 2, 2018
    Inventors: Jerald K. Rasmussen, Catherine A. Bothof, George W. Griesgraber, Semra Colak Atan, James I. Hembre, Robert T. Fitzsimons, JR.
  • Patent number: 10005814
    Abstract: Ligand functionalized substrates, methods of making ligand functionalized substrates, and methods of using functionalized substrates are disclosed.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: June 26, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Kannan Seshadri, Robert T. Fitzsimons, Jr., James I. Hembre, Catherine A. Bothof, Erin A. Satterwhite, George W. Griesgraber, Yi He, Louis C. Haddad
  • Patent number: 9958364
    Abstract: An article that can be used for biomaterial capture comprises (a) a porous substrate; and (b) borne on the porous substrate, a polymer comprising interpolymerized units of at least one monomer consisting of (1) at least one monovalent ethylenically unsaturated group, (2) at least one monovalent ligand functional group selected from acidic groups, basic groups other than guanidino, and salts thereof, and (3) a multivalent spacer group that is directly bonded to the monovalent groups so as to link at least one ethylenically unsaturated group and at least one ligand functional group by a chain of at least six catenated atoms.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: May 1, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Catherine A. Bothof, George W. Griesgraber, Semra Colak Atan, James I. Hembre, Robert T. Fitzsimons, Jr.
  • Patent number: 9758547
    Abstract: Ligand functionalized substrates, methods of making ligand functionalized substrates, and methods of using functionalized substrates are disclosed.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: September 12, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Kannan Seshadri, Robert T. Fitzsimons, Jr., James I. Hembre, Catherine A. Bothof, Erin A. Satterwhite, George W. Griesgraber, Yi He, Louis C. Haddad
  • Publication number: 20170240591
    Abstract: Ligand functionalized substrates, methods of making ligand functionalized substrates, and methods of using functionalized substrates are disclosed.
    Type: Application
    Filed: May 10, 2017
    Publication date: August 24, 2017
    Inventors: Jerald K. Rasmussen, Kannan Seshadri, Robert T. Fitzsimons, JR., James I. Hembre, Catherine A. Bothof, Erin A. Satterwhite, George W. Griesgraber, Yi He, Louis C. Haddad
  • Patent number: 9725545
    Abstract: Porous polymeric resins, reaction mixtures and methods that can be used to prepare the porous polymeric resins, and uses of the porous polymeric resin are described. More specifically, the polymeric resins typically have a hierarchical porous structure plus reactive groups that can be used to interact with or react with a variety of different target compounds. The reactive groups can be selected from an acidic group or a salt thereof, an amino group or salt thereof, a hydroxyl group, an azlactone group, a glycidyl group, or a combination thereof.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: August 8, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Peter D. Wickert, Simon K. Shannon, Kannan Seshadri, Jerald K. Rasmussen, James I. Hembre, Robert T. Fitzsimons, Jr.
  • 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: 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: 20160231208
    Abstract: An article that can be used for biomaterial capture comprises (a) a porous substrate; and (b) borne on the porous substrate, a polymer comprising interpolymerized units of at least one monomer consisting of (1) at least one monovalent ethylenically unsaturated group, (2) at least one monovalent ligand functional group selected from acidic groups, basic groups other than guanidino, and salts thereof, and (3) a multivalent spacer group that is directly bonded to the monovalent groups so as to link at least one ethylenically unsaturated group and at least one ligand functional group by a chain of at least six catenated atoms.
    Type: Application
    Filed: September 25, 2014
    Publication date: August 11, 2016
    Inventors: Jerald K. Rasmussen, Catherine A. Bothof, George W. Griesgraber, Semra Colak Atan, James I. Hembre, Robert T. Fitzsimons, JR.
  • Publication number: 20160152662
    Abstract: A substrate comprising a crosslinked polymer primer layer, and grafted thereto a ligand-functionalized polymer is provided. The grafted polymer has the requisite affinity for binding neutral or negatively charged biomaterials, such as cells, cell debris, bacteria, spores, viruses, nucleic acids, and proteins, at pH's near or below the pI's of the biomaterials.
    Type: Application
    Filed: February 8, 2016
    Publication date: June 2, 2016
    Inventors: Jerald K. Rasmussen, Catherine A. Bothof, Kannan Seshadri, James I. Hembre, Robert T. Fitzsimons, JR., George W. Griesgraber, Yi He
  • Patent number: 9296847
    Abstract: Ligand functionalized substrates, methods of making ligand functionalized substrates, and methods of using functionalized substrates are disclosed.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: March 29, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Catherine A. Bothof, Kannan Seshadri, Erin A. Satterwhite, Robert T. Fitzsimons, Jr., James L. Hembre, Mahfuza B. Ali
  • Patent number: 9272246
    Abstract: A substrate comprising a crosslinked polymer primer layer, and grafted thereto a ligand-functionalized polymer is provided. The grafted polymer has the requisite affinity for binding neutral or negatively charged biomaterials, such as cells, cell debris, bacteria, spores, viruses, nucleic acids, and proteins, at pH's near or below the pI's of the biomaterials.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: March 1, 2016
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Jerald K. Rasmussen, Catherine A. Bothof, Kannan Seshadri, James I. Hembre, Robert T. Fitzsimons, Jr., George W. Griesgraber, Yi He
  • 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: 20150166703
    Abstract: Ligand functionalized substrates, methods of making ligand functionalized substrates, and methods of using functionalized substrates are disclosed.
    Type: Application
    Filed: January 20, 2015
    Publication date: June 18, 2015
    Inventors: Jerald K. Rasmussen, Catherine A. Bothof, Kannan Seshadri, Erin A. Satterwhite, Robert T. Fitzsimons, JR., James L. Hembre, Mahfuza B. Ali
  • Patent number: 9056316
    Abstract: Semi-interpenetrating polymeric networks are described. More specifically, the semi-interpenetrating polymeric networks include at least two polymers that are closely associated. The first polymer is an ionic polymer that is not crosslinked. The second polymer is a cross-linked polymer that can be either another ionic polymer or a non-ionic polymer. Methods of making the semi-interpenetrating polymeric networks, articles containing the semi-interpenetrating polymeric networks, and methods of using the semi-interpenetrating polymeric networks are also described. The semi-interpenetrating polymeric networks can function as ion exchange resins.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: June 16, 2015
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Del R. Lawson, James I. Hembre, Jerald K. Rasmussen, Catherine A. Bothof, Kannan Seshadri, Robert T. Fitzsimons, Jr., Andrew W. Rabins, Taib K. Ansera
  • Patent number: 8956535
    Abstract: A single pass simulated moving bed apparatus and methods are described for continuously separating a target molecule from a liquid mixture, using a simulated moving bed system. The simulated moving bed system includes a plurality of filter cartridge modules in serial fluid communication. Each filter cartridge module includes a volume of stationary phase particulates adjacent a porous substrate layer. The volume of stationary phase particulates has a bed height of less than 1 centimeter.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: February 17, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Kelly J. Gibbens, Masayuki Nakamura, Kannan Seshadri, Andrew W. Rabins, Larry J. Carson, Robert T. Fitzsimons, Jr.
  • Patent number: 8945896
    Abstract: Ligand functionalized substrates, methods of making ligand functionalized substrates, and methods of using functionalized substrates are disclosed.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: February 3, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Catherine A. Bothof, Kannan Seshadri, Erin A. Satterwhite, Robert T. Fitzsimons, Jr., James L. Hembre, Mahfuza B. Ali
  • Publication number: 20140193875
    Abstract: Porous polymeric resins, reaction mixtures and methods that can be used to prepare the porous polymeric resins, and uses of the porous polymeric resin are described. More specifically, the polymeric resins typically have a hierarchical porous structure plus reactive groups that can be used to interact with or react with a variety of different target compounds. The reactive groups can be selected from an acidic group or a salt thereof, an amino group or salt thereof, a hydroxyl group, an azlactone group, a glycidyl group, or a combination thereof.
    Type: Application
    Filed: March 11, 2014
    Publication date: July 10, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Peter D. Wickert, Simon K. Shannon, Kannan Seshadri, Jerald K. Rasmussen, James I. Hembre, Robert T. Fitzsimons, JR.
  • Patent number: 8710111
    Abstract: Porous polymeric resins, reaction mixtures and methods that can be used to prepare the porous polymeric resins, and uses of the porous polymeric resin are described. More specifically, the polymeric resins typically have a hierarchical porous structure plus reactive groups that can be used to interact with or react with a variety of different target compounds. The reactive groups can be selected from an acidic group or a salt thereof, an amino group or salt thereof, a hydroxyl group, an azlactone group, a glycidyl group, or a combination thereof.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: April 29, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Peter D. Wickert, Simon K. Shannon, Kannan Seshadri, Jerald K. Rasmussen, James I. Hembre, Robert T. Fitzsimons, Jr.