Patents by Inventor Peter D. Wickert

Peter D. Wickert 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).

  • Publication number: 20200406231
    Abstract: A method of separating biomolecules in an aqueous mixture is disclosed comprising a obtaining a separation vessel containing separation media, wherein the separation media comprises a porous support with a hydrophobic monomer grafted thereon, the hydrophobic monomer having the structure: CH2?CR4C(O)NHC(R1R1)(C(R1R1))nC(O)XR3 wherein n is an integer of 0 or 1; R1 is independently selected from at least one of: a hydrogen atom, alkyls, aryls, and alkylaryls, wherein the alkyls, aryls, and alkylaryls have a total of 10 carbon atoms or less; R3 is a hydrophobic group selected from at least one of alkyls, aryls, alkylaryls and ethers, wherein the alkyls, aryls, alkylaryls and ethers have a total number of carbon atoms ranging from 4 to 30; R4 is H or CH3; and X is O or NH; wherein the hydrophobic monomer is derived from an amine or an alcohol (HXR3) that has a hydrophilicity index of 25 or less; and (b) passing the aqueous mixture through the separation vessel thereby separating the biomolecules.
    Type: Application
    Filed: September 14, 2020
    Publication date: December 31, 2020
    Inventors: Jerald K. Rasmussen, Cary A. Kipke, Peter D. Wickert
  • 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: 20160325268
    Abstract: A filtration media is disclosed comprising a hydrophobic monomer grafted onto a support, the hydrophobic monomer having the structure: CH2?CR4C(O)NHC(R1R1)(C(R1R1))nC(O)XR3 wherein n is an integer of 0 or 1; R1 is independently selected from at least one of: a hydrogen atom, alkyls, aryls, and alkylaryls, wherein the alkyls, aryls, and alkylaryls have a total of 10 carbon atoms or less; R3 is a hydrophobic group selected from at least one of: alkyls, aryls, alkylaryls and ethers, wherein the alkyls, aryls, alkylaryls and ethers have a total number of carbon atoms ranging from 4 to 30; R4 is H or CH3; X is O or NH. In some embodiments the hydrophobic monomer is derived from an amine or an alcohol (HXR3) that has a hydrophilicity index of 25 or less. Such media may be used in applications such as hydrophobic interaction chromatography.
    Type: Application
    Filed: July 19, 2016
    Publication date: November 10, 2016
    Inventors: Jerald K. Rasmussen, Cary A. Kipke, Peter D. Wickert
  • 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.
  • Patent number: 8367198
    Abstract: Precisely-shaped composites and methods for making these composites are disclosed. The method of this disclosure comprises introducing a precursor composition onto a production tool having at least one continuous surface and a plurality of cavities so as to fill at least a portion of the cavities with the precursor composition and wherein the precursor composition, upon curing, forms a composition having a shape corresponding to the cavities thereby resulting in a plurality of discrete, precisely-shaped particles having a porosity comprising one of the following: (a) 10 m2/g or greater or (b) 5 kdalton or greater. The precisely-shaped particles have at least one essentially flat side. The precisely-shaped particles can be confined in a vessel and used for chromatographic applications.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: February 5, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Peter D. Wickert, Scott R. Culler, Jerald K. Rasmussen
  • Patent number: 8349906
    Abstract: Methods of making macroporous cation exchange resins are described. The macroporous cation exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. The macroporous cation exchange resins are prepared using an inverse suspension polymerization process in the presence of a water soluble, organic, aliphatic porogen having at least three hydroxy groups.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: January 8, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Jr., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
  • Patent number: 8338496
    Abstract: Methods of making macroporous cation exchange resins are described. The macroporous cation exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. Additionally, methods of purifying a positively charged material using the macroporous cation exchange resins, methods of making chromatographic columns that contain the macroporous cation exchange resins, methods of making filter elements that contain the macroporous cation exchange resins, and methods of making porous composite materials that contain the macroporous cation exchange resins are described.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: December 25, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Jr., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
  • Patent number: 8338497
    Abstract: Methods of making macroporous anion exchange resins are described. The macroporous anion exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. Additionally, methods of purifying a negatively charged material using the macroporous anion exchange resins, methods of making chromatographic columns that contain the macroporous anion exchange resins, methods of making filter elements that contain the macroporous anion exchange resins, and methods of making porous composite materials that contain the macroporous anion exchange resins are described.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: December 25, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Jr., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
  • Publication number: 20120039920
    Abstract: A composition is disclosed comprising a hydrophobic monomer having the structure: CH2?CR4C(O)NHC(R1R1)(C(R1R1))nC(O)XR3 wherein n is an integer of 0 or 1; R1 is independently selected from at least one of: a hydrogen atom, alkyls aryls, and alkylaryls, wherein the alkyls, aryls, and alkylaryls have a total of 10 carbon atoms or less; R3 is a hydrophobic group selected from at least one of: alkyls, aryls, alkylaryls and ethers, wherein the alkyls, aryls, alkylaryls and ethers have a total number of carbon atoms ranging from 4 to 30; R4 H or CH3; X is O or NH. In some embodiments the hydrophobic monomer is derived from an amine or an alcohol (HXR3) that has a hydrophilicity index of 25 or less. A polymerizable composition comprising the hydrophobic monomer is disclosed, which optionally may comprise a cross-linking monomer and/or a non-cross-linking monomer.
    Type: Application
    Filed: March 19, 2010
    Publication date: February 16, 2012
    Inventors: Jerald K. Rasmussen, Cary A. Kipke, James I. Hembre, Peter D. Wickert
  • Publication number: 20100311850
    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: November 5, 2008
    Publication date: December 9, 2010
    Inventors: Peter D. Wickert, Simon K. Shannon, Kannan Seshadri, Jerald K. Rasmussen, James I. Hembre, Robert T. Fitzsimons, JR.
  • Publication number: 20100266847
    Abstract: Precisely-shaped composites and methods for making these composites are disclosed. The method of this disclosure comprises introducing a precursor composition onto a production tool having at least one continuous surface and a plurality of cavities so as to fill at least a portion of the cavities with the precursor composition and wherein the precursor composition, upon curing, forms a composition having a shape corresponding to the cavities thereby resulting in a plurality of discrete, precisely-shaped particles having a porosity comprising one of the following: (a) 10 m2/g or greater or (b) 5 kdalton or greater. The precisely-shaped particles have at least one essentially flat side. The precisely-shaped particles can be confined in a vessel and used for chromatographic applications.
    Type: Application
    Filed: November 17, 2008
    Publication date: October 21, 2010
    Inventors: Peter D. Wickert, Scott R. Culler, Jerald K. Rasmussen
  • Publication number: 20100116739
    Abstract: Methods of making macroporous cation exchange resins are described. The macroporous cation exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. The macroporous cation exchange resins are prepared using an inverse suspension polymerization process in the presence of a water soluble, organic, aliphatic porogen having at least three hydroxy groups.
    Type: Application
    Filed: January 20, 2010
    Publication date: May 13, 2010
    Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, JR., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
  • Publication number: 20100116748
    Abstract: Methods of making macroporous anion exchange resins are described. The macroporous anion exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. Additionally, methods of purifying a negatively charged material using the macroporous anion exchange resins, methods of making chromatographic columns that contain the macroporous anion exchange resins, methods of making filter elements that contain the macroporous anion exchange resins, and methods of making porous composite materials that contain the macroporous anion exchange resins are described.
    Type: Application
    Filed: January 18, 2010
    Publication date: May 13, 2010
    Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, JR., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
  • Publication number: 20100112664
    Abstract: Methods of making macroporous cation exchange resins are described. The macroporous cation exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. Additionally, methods of purifying a positively charged material using the macroporous cation exchange resins, methods of making chromatographic columns that contain the macroporous cation exchange resins, methods of making filter elements that contain the macroporous cation exchange resins, and methods of making porous composite materials that contain the macroporous cation exchange resins are described.
    Type: Application
    Filed: January 15, 2010
    Publication date: May 6, 2010
    Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, JR., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
  • Patent number: 7683100
    Abstract: Methods of making macroporous cation exchange resins are described. The macroporous cation exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. Additionally, methods of purifying a positively charged material using the macroporous cation exchange resins, methods of making chromatographic columns that contain the macroporous cation exchange resins, methods of making filter elements that contain the macroporous cation exchange resins, and methods of making porous composite materials that contain the macroporous cation exchange resins are described.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: March 23, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Jr., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
  • Patent number: 7674836
    Abstract: Methods of making macroporous cation exchange resins are described. The macroporous cation exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. The macroporous cation exchange resins are prepared using an inverse suspension polymerization process in the presence of a water soluble, organic, aliphatic porogen having at least three hydroxy groups.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: March 9, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Jr., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
  • Patent number: 7674835
    Abstract: Methods of making macroporous anion exchange resins are described. The macroporous anion exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. Additionally, methods of purifying a negatively charged material using the macroporous anion exchange resins, methods of making chromatographic columns that contain the macroporous anion exchange resins, methods of making filter elements that contain the macroporous anion exchange resins, and methods of making porous composite materials that contain the macroporous anion exchange resins are described.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: March 9, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Jr., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
  • Publication number: 20080027153
    Abstract: Methods of making macroporous cation exchange resins are described. The macroporous cation exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. The macroporous cation exchange resins are prepared using an inverse suspension polymerization process in the presence of a water soluble, organic, aliphatic porogen having at least three hydroxy groups.
    Type: Application
    Filed: July 28, 2006
    Publication date: January 31, 2008
    Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
  • Patent number: 6900028
    Abstract: Disc assay devices and methods for the detection and enumeration of microorganisms are disclosed. The devices and methods include a plurality of discs attached to a substrate and a reflector on one surface of each of the discs to reflect electromagnetic energy of selected wavelengths after the energy has passed through the disc. The reflector may be useful to improve the accuracy of detection and/or enumeration of target microorganisms on the assay devices. A system for detecting and/or enumerating target microorganisms on disc assay devices is also provided.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: May 31, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Peter D. Wickert, Michael G. Williams, Christine A. Binsfeld