Patents by Inventor Gregory M. Jellum
Gregory M. Jellum 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: 20230226464Abstract: A chromatography device having a housing having an inlet and an outlet. At least two layers of media disposed between the inlet and the outlet inside of the housing forming a media stack, and wherein at least one of the layers comprises a functionalized layer. A spacer ring disposed between at the least two layers of media forming an air gap between them.Type: ApplicationFiled: April 27, 2021Publication date: July 20, 2023Inventors: Kannan DASHARATHI, Jonathan F. HESTER, Gregory M. JELLUM, Angelines CASTRO FORERO
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Publication number: 20230182039Abstract: A chromatography device having a housing having an inlet and an outlet. At least two layers of media disposed between the inlet and the outlet inside of the housing forming a media stack, with at least one of the layers comprising a functionalized layer. An optional spacer ring disposed between the two layers of media forming an air gap between them. A non-functionalized sealing layer disposed between the inlet and the outlet inside of the housing as the last layer of media in the media stack within the housing as a fluid passes from the inlet to the outlet through the media stack. A margin of the sealing layer in contact with the housing; the margin being compressed by the housing forming a compressive seal to prevent fluid from leaking to the outlet past the compressive seal.Type: ApplicationFiled: April 22, 2021Publication date: June 15, 2023Inventors: Kannan DASHARATHI, Jonathan F. HESTER, Gregory M. JELLUM, Angelines CASTRO FORERO
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Patent number: 10722848Abstract: Described herein is a filtration media comprising: (i) a first filtration medium comprising an anion exchange nonwoven substrate, wherein the anion exchange nonwoven substrate comprises a plurality of quaternary ammonium groups; and (ii) a second filtration medium comprising a functionalized microporous membrane wherein the functionalized microporous membrane comprises a plurality of guanidyl groups; wherein the first filtration medium is positioned upstream of the second filtration medium.Type: GrantFiled: October 11, 2016Date of Patent: July 28, 2020Assignee: 3M Innovative Properties CompanyInventors: Jonathan F. Hester, Angelines A. Castro Forero, Gregory M. Jellum, Jerald K. Rasmussen, Kannan Seshadri, Clinton P. Waller, Jr.
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Patent number: 10562997Abstract: A method of purifying a biological composition includes: disposing loose cationic ligand-functionalized staple fibers and a biological composition within a mixing volume of a vessel; agitating the biological composition and the loose cationic ligand-functionalized staple fibers while they are in intimate contact with each other within the mixing volume to provide modified fibers and a purified biological composition; and separating at least a portion of the purified biological composition from the modified fibers and any loose cationic ligand-functionalized staple fibers with which it is in contact. The loose cationic ligand-functionalized staple fibers have a modified surface layer comprising a grafted acrylic polymer comprising 10 to 100 percent by weight of a cationically-ionizable monomer unit. An article for purifying a biological composition includes: a vessel having a mixing volume disposed therein; and the loose cationic ligand-functionalized staple fibers disposed within the mixing volume.Type: GrantFiled: March 17, 2016Date of Patent: February 18, 2020Assignee: 3M Innovative Properties CompanyInventors: Andrew W. Vail, Jerald K. Rasmussen, John J. Schmidt, Ali E. Ozcam, Jonathan F. Hester, Gregory M. Jellum
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Publication number: 20180257042Abstract: Described herein is a filtration media comprising: (i) a first filtration medium comprising an anion exchange nonwoven substrate, wherein the anion exchange nonwoven substrate comprises a plurality of quaternary ammonium groups; and (ii) a second filtration medium comprising a functionalized microporous membrane wherein the functionalized microporous membrane comprises a plurality of guanidyl groups; wherein the first filtration medium is positioned upstream of the second filtration medium.Type: ApplicationFiled: October 11, 2016Publication date: September 13, 2018Inventors: Jonathan F. Hester, Angelines A. Castro Forero, Gregory M. Jellum, Jerald K. Rasmussen, Kannan Seshadri, Clinton P. Waller, Jr.
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Publication number: 20180066095Abstract: A method of purifying a biological composition includes: disposing loose cationic ligand-functionalized staple fibers and a biological composition within a mixing volume of a vessel; agitating the biological composition and the loose cationic ligand-functionalized staple fibers while they are in intimate contact with each other within the mixing volume to provide modified fibers and a purified biological composition; and separating at least a portion of the purified biological composition from the modified fibers and any loose cationic ligand-functionalized staple fibers with which it is in contact. The loose cationic ligand-functionalized staple fibers have a modified surface layer comprising a grafted acrylic polymer comprising 10 to 100 percent by weight of a cationically-ionizable monomer unit. An article for purifying a biological composition includes: a vessel having a mixing volume disposed therein; and the loose cationic ligand-functionalized staple fibers disposed within the mixing volume.Type: ApplicationFiled: March 17, 2016Publication date: March 8, 2018Inventors: Andrew W. Vail, Jerald K. Rasmussen, John J. Schmidt, Ali E. Ozcam, Jonathan F. Hester, Gregory M. Jellum
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Patent number: 9610528Abstract: A filter frame assembly is disclosed comprising a perimeter member surrounding a fluid aperture adapted to accommodate a fluid flow from an upstream direction to a downstream direction, the perimeter member comprising a perimeter upstream surface, a perimeter downstream surface, and a perimeter outer surface connecting the perimeter upstream surface to the perimeter downstream surface. A gasket carrier is attached to the perimeter member and comprises a carrier outer portion facing generally away from the fluid aperture and a first outer portion sealing member projecting from the carrier outer portion.Type: GrantFiled: September 12, 2012Date of Patent: April 4, 2017Assignee: 3M Innovative Properties CompanyInventors: Francis E. Porbeni, Kenneth J. Snider, Dean R. Duffy, Gregory M. Jellum, Richard A. Kirchner, Donald E. Young, Chris P. Manderfeld, John J. Reese
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Publication number: 20150273405Abstract: Described herein is a membrane separation module and articles and methods thereof, wherein the membrane separation module has a series of repeating layers, each layer comprising (a) a selectively permeable membrane; and (b) at least one support layer, wherein the support layer comprises a plurality of flow channels and a plurality of rails extending from the support layer, wherein the sides of two adjacent rails form a flow channel, wherein the plurality of rails on the support layer comprise a thermoplastic polymer at the distal end of at least a portion of the plurality of rails, and wherein the distal end of the plurality of rails contacts the selectively permeable membrane to form a bonded stack.Type: ApplicationFiled: September 17, 2013Publication date: October 1, 2015Inventors: John W. Henderson, Brady P. Haislet, Brent R. Hansen, Jonathan F. Hester, Gregory M. Jellum, Qihong Nie, John F. Reed, John B. Scheibner, David F. Slama, Steven E. Turch
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Publication number: 20150075125Abstract: A filter frame assembly is disclosed comprising a perimeter member surrounding a fluid aperture adapted to accommodate a fluid flow from an upstream direction to a downstream direction, the perimeter member comprising a perimeter upstream surface, a perimeter downstream surface, and a perimeter outer surface connecting the perimeter upstream surface to the perimeter downstream surface. A gasket carrier is attached to the perimeter member and comprises a carrier outer portion facing generally away from the fluid aperture and a first outer portion sealing member projecting from the carrier outer portion.Type: ApplicationFiled: September 12, 2012Publication date: March 19, 2015Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Francis E. Porbeni, Kenneth J. Snider, Dean R. Duffy, Gregory M. Jellum, Richard A. Kirchner, Donald E. Young, Chris P. Manderfeld, John J. Reese
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Patent number: 5830376Abstract: A maskless process generates a patterned coating on a polymeric substrate, wherein the pattern is at least partially defined by the substrate topography. The process uses a high intensity/high fluence energy source to strike a coated substrate, thus selectively removing a portion of the coating. The amount and area of the coating removed is dependent on the substrate topography and the applied energy, and this forms a pattern of residual coating material on the substrate.Type: GrantFiled: November 22, 1996Date of Patent: November 3, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Susan Nord Bohlke, Gregory M. Jellum, Douglas S. Dunn, Andrew J. Ouderkirk
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Patent number: 5712645Abstract: An antenna adapted for placement in the window of a vehicle includes a flexible substrate having a pair of opposing surfaces, at least one of which is provided with electrically conductive metal traces in the form of a pattern configured to receive and transmit one or more electromagnetic signals. The pitch, trace width, and thickness of the metal traces are selected such that the antenna has an area-averaged resistivity of no greater than about 1 ohm/square for a pre-determined area-averaged transmission value in the visible region.Type: GrantFiled: October 6, 1995Date of Patent: January 27, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Gregory M. Jellum, Bradley L. Givot, Roger A. Brekken, Susan N. Bohlke