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).
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Publication number: 20200406231Abstract: 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: ApplicationFiled: September 14, 2020Publication date: December 31, 2020Inventors: Jerald K. Rasmussen, Cary A. Kipke, Peter D. Wickert
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Patent number: 9725545Abstract: 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: GrantFiled: March 11, 2014Date of Patent: August 8, 2017Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Peter D. Wickert, Simon K. Shannon, Kannan Seshadri, Jerald K. Rasmussen, James I. Hembre, Robert T. Fitzsimons, Jr.
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HYDROPHOBIC MONOMERS, HYDROPHOBICALLY-DERIVATIZED SUPPORTS, AND METHODS OF MAKING AND USING THE SAME
Publication number: 20160325268Abstract: 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: ApplicationFiled: July 19, 2016Publication date: November 10, 2016Inventors: Jerald K. Rasmussen, Cary A. Kipke, Peter D. Wickert -
Publication number: 20140193875Abstract: 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: ApplicationFiled: March 11, 2014Publication date: July 10, 2014Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Peter D. Wickert, Simon K. Shannon, Kannan Seshadri, Jerald K. Rasmussen, James I. Hembre, Robert T. Fitzsimons, JR.
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Patent number: 8710111Abstract: 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: GrantFiled: November 5, 2008Date of Patent: April 29, 2014Assignee: 3M Innovative Properties CompanyInventors: Peter D. Wickert, Simon K. Shannon, Kannan Seshadri, Jerald K. Rasmussen, James I. Hembre, Robert T. Fitzsimons, Jr.
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Patent number: 8367198Abstract: 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: GrantFiled: November 17, 2008Date of Patent: February 5, 2013Assignee: 3M Innovative Properties CompanyInventors: Peter D. Wickert, Scott R. Culler, Jerald K. Rasmussen
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Patent number: 8349906Abstract: 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: GrantFiled: January 20, 2010Date of Patent: January 8, 2013Assignee: 3M Innovative Properties CompanyInventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Jr., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
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Patent number: 8338496Abstract: 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: GrantFiled: January 15, 2010Date of Patent: December 25, 2012Assignee: 3M Innovative Properties CompanyInventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Jr., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
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Patent number: 8338497Abstract: 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: GrantFiled: January 18, 2010Date of Patent: December 25, 2012Assignee: 3M Innovative Properties CompanyInventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Jr., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
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HYDROPHOBIC MONOMERS, HYDROPHOBICALLY-DERIVATIZED SUPPORTS, AND METHODS OF MAKING AND USING THE SAME
Publication number: 20120039920Abstract: 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: ApplicationFiled: March 19, 2010Publication date: February 16, 2012Inventors: Jerald K. Rasmussen, Cary A. Kipke, James I. Hembre, Peter D. Wickert -
Publication number: 20100311850Abstract: 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: ApplicationFiled: November 5, 2008Publication date: December 9, 2010Inventors: Peter D. Wickert, Simon K. Shannon, Kannan Seshadri, Jerald K. Rasmussen, James I. Hembre, Robert T. Fitzsimons, JR.
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Publication number: 20100266847Abstract: 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: ApplicationFiled: November 17, 2008Publication date: October 21, 2010Inventors: Peter D. Wickert, Scott R. Culler, Jerald K. Rasmussen
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Publication number: 20100116739Abstract: 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: ApplicationFiled: January 20, 2010Publication date: May 13, 2010Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, JR., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
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Publication number: 20100116748Abstract: 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: ApplicationFiled: January 18, 2010Publication date: May 13, 2010Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, JR., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
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Publication number: 20100112664Abstract: 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: ApplicationFiled: January 15, 2010Publication date: May 6, 2010Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, JR., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
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Patent number: 7683100Abstract: 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: GrantFiled: December 21, 2005Date of Patent: March 23, 2010Assignee: 3M Innovative Properties CompanyInventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Jr., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
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Patent number: 7674836Abstract: 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: GrantFiled: July 28, 2006Date of Patent: March 9, 2010Assignee: 3M Innovative Properties CompanyInventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Jr., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
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Patent number: 7674835Abstract: 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: GrantFiled: December 21, 2005Date of Patent: March 9, 2010Assignee: 3M Innovative Properties CompanyInventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Jr., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
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Publication number: 20080027153Abstract: 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: ApplicationFiled: July 28, 2006Publication date: January 31, 2008Inventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
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Patent number: 6900028Abstract: 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: GrantFiled: October 10, 2002Date of Patent: May 31, 2005Assignee: 3M Innovative Properties CompanyInventors: Peter D. Wickert, Michael G. Williams, Christine A. Binsfeld