Patents by Inventor Stephen K. Sontag
Stephen K. Sontag 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: 20240042395Abstract: A filter media comprises a layer of porous material having a patterned outer surface comprising a plurality of structures. Each structure in the plurality has at least a predetermined height based on an expected contaminant and spacing between each structure in a pair of structures in the plurality is at most a predetermined spacing based on the expected contaminant.Type: ApplicationFiled: April 1, 2022Publication date: February 8, 2024Inventors: Mikayla A. Yoder, Davis B. Moravec, Christopher P. Conklin, Matthew P. Goertz, Stephen K. Sontag, Anil Suthar, Stuti S. Rajgarhia, Alexandra M. Boyat, Andrew J. Dallas
-
Patent number: 11806650Abstract: A substrate for use in a filter media including, for example, in a hydrocarbon fluid-water separation filter; methods of identifying the substrate; methods of making the substrate; methods of using the substrate; and methods of improving the roll off angle of the substrate. In some embodiments, the substrate includes a hydrophilic group-containing polymer or a hydrophilic group-containing polymer coating.Type: GrantFiled: November 18, 2021Date of Patent: November 7, 2023Assignee: DONALDSON COMPANY, INC.Inventors: Bradly G. Hauser, Stephen K. Sontag, Davis B. Moravec, Stuti S. Rajgarhia, Andrew J. Dallas, Vijay K. Kapoor, Aflal Rahmathullah, Charles S. Christ, Joseph M. Block
-
Publication number: 20230347296Abstract: Articles including poly(2,2,3,3,4,4,4-heptafluorobutyl methacrylate) or poly(2,2,3,3,4,4,4-heptafluorobutyl acrylate), fluoropolymers that do not form perfluorooctanoic acid (PFOA) when they degrade and that exhibit unexpectedly good oil repellency, are described. A method of making a fluoropolymer-containing article includes depositing a fluoropolymer-liquid mixture onto porous filtration medium by contacting the porous filtration medium with a mixture comprising a fluoropolymer and a liquid to form the treated porous filtration medium; and removing the liquid. The fluoropolymer includes poly(2,2,3,3,4,4,4-heptafluorobutyl methacrylate) or poly(2,2,3,3,4,4,4-heptafluorobutyl acrylate). Methods of using the article are further described.Type: ApplicationFiled: August 17, 2021Publication date: November 2, 2023Inventors: Stephen K. Sontag, Matthew P. Goertz
-
Publication number: 20220282476Abstract: The tape incudes a water vapor-permeable air and water barrier article and a pressure sensitive adhesive layer. The air and water barrier article includes a fibrous layer having first and second major surfaces and a polymeric layer on a first major surface of the fibrous layer that penetrates into the fibrous layer but leaves at least some fibers exposed on the second major surface. The pressure sensitive adhesive layer is on the polymeric layer of the air and water barrier article. The tape can retain greater than 50 percent by weight of mortar applied according to the Vertical Mortar Receptivity Evaluation. The article includes a substrate, the tape, and a composite layer comprising at least one of gypsum, lime, or cement. The composite layer is at least one of dried or cured on the second major surface of the fibrous layer. Methods of making the article are also described.Type: ApplicationFiled: August 5, 2020Publication date: September 8, 2022Inventors: Martin J.O. Widenbrant, Stephen K. Sontag, Jeremy P. Gundale, Kevin M. Lewandowski, Jenna L. Richardson, James A. Bergman
-
Publication number: 20220243010Abstract: This disclosure describes compositions including a perfluoropolyether (PFPE) bottlebrush polymer, optionally blended with other fluoropolymers. The compositions may be disposed on an article, including, for example, a porous filtration media, to form a fluoropolymer-containing article. This disclosure further describes methods of making fluoropolymer-containing articles and methods of using the fluoropolymer-containing articles.Type: ApplicationFiled: February 2, 2022Publication date: August 4, 2022Inventors: Stephen K. Sontag, Matthew P. Goertz, Andrew J. Dallas
-
Publication number: 20220152536Abstract: A substrate for use in a filter media including, for example, in a hydrocarbon fluid-water separation filter; methods of identifying the substrate; methods of making the substrate; methods of using the substrate; and methods of improving the roll off angle of the substrate. In some embodiments, the substrate includes a hydrophilic group-containing polymer or a hydrophilic group-containing polymer coating.Type: ApplicationFiled: November 18, 2021Publication date: May 19, 2022Inventors: Bradly G. Hauser, Stephen K. Sontag, Davis B. Moravec, Stuti S. Rajgarhia, Andrew J. Dallas, Vijay K. Kapoor, Aflal Rahmathullah, Charles S. Christ, Joseph M. Block
-
Patent number: 11207623Abstract: A substrate for use in a filter media including, for example, in a hydrocarbon fluid-water separation filter; methods of identifying the substrate; methods of making the substrate; methods of using the substrate; and methods of improving the roll off angle of the substrate. In some embodiments, the substrate includes a hydrophilic group-containing polymer or a hydrophilic group-containing polymer coating.Type: GrantFiled: May 29, 2019Date of Patent: December 28, 2021Assignee: Donaldson Company, Inc.Inventors: Bradly G. Hauser, Stephen K. Sontag, Davis B. Moravec, Stuti S. Rajgarhia, Andrew J. Dallas, Vijay K. Kapoor, Aflal Rahmathullah, Charles S. Christ, Joseph M. Block
-
Publication number: 20210106935Abstract: The current technology relates to substrate treatments, treated substrates, and filters. Treated substrates can have a treated surface that defines a pattern and/or gradient among untreated surface areas. A treated surface area can have a higher roll off angle for a 50 ?L water droplet when the surface is immersed in toluene that the untreated surface areas. Substrates can be treated by, for example, exposing a substrate surface and/or fibers to ultraviolet (UV) radiation. UV radiation can be applied to surfaces via a mask, lens, waveguide, reflector, as examples. UV radiation can be applied to surfaces at varying intensities, which can create a treatment gradient.Type: ApplicationFiled: February 14, 2019Publication date: April 15, 2021Inventors: Aflal Rahmathullah, Andrew J. Dallas, Stephen K. Sontag, Bradly G. Hauser, Davis B. Moravec, Vijay K. Kapoor, Matthew P. Goertz, Daniel L. Tuma, Warren E. Dammann, Michael J. Cronin, Mike J. Madsen, Stuti S. Rajgarhia, Charles S. Christ, Joseph M. Block
-
Publication number: 20210060456Abstract: The current technology relates to filter media configurations where the filter media has a surface with a treatment that that increases the roll off angle of the surface for a 50 ?L water droplet when the surface is immersed in toluene. Some example filter media has a fluted configuration, and some example filter media has multiple layers. Filter media having multiple layers can be single facer media, for example, where one layer is planar and another layer is fluted.Type: ApplicationFiled: February 14, 2019Publication date: March 4, 2021Inventors: Aflal Rahmathullah, Andrew J. Dallas, Brian R. Tucker, Daniel E. Adamek, Paul A. Way, Scott A. Betcher, Vijay K. Kapoor, Colter A. Marcks, William S. Rossiter, Timothy O. Winters, Wijadi Jodi, Bradly G. Hauser, Davis B. Moravec, Matthew P. Goertz, Stephen K. Sontag, Stuti S. Rajgarhia, Charles S. Christ, Joseph M. Block
-
Publication number: 20210016214Abstract: The current technology relates to various filter elements configurations where a substrate layer defines a surface having a treatment. The treatment increases a roll off angle of the surface for a 50 water droplet when the surface is immersed in toluene. The filter element can have a housing and the substrate disposed in the housing. In some embodiments the substrate layer defines a plurality of pleats extending between pleat folds that form flow faces of the media. In some embodiments the substrate is incorporated into single facer media of a filter element. In some embodiments the substrate layer is incorporated in a filter element having a flow-by configuration. In some embodiments the substrate layer is incorporated in a filter element having a cross-flow configuration. Some embodiments relate to a vent. Some embodiments relate to a barrier assembly and/or a fuel filter element. Various other filter elements are described.Type: ApplicationFiled: February 14, 2019Publication date: January 21, 2021Inventors: Aflal Rahmathullah, Andrew J. Dallas, Brian R. Tucker, Daniel E. Adamek, Paul A. Way, Scott A. Betcher, Vijay K. Kapoor, Colter A. Marcks, William S. Rossiter, Timothy O. Winters, Wijadi Jodi, Davis B. Moravec, Stephen K. Sontag, Bradly G. Hauser, Matthew P. Goertz, Derek O. Jones, Yehya A. Elsayed, Stuti S. Rajgarhia, Charles S. Christ, Joseph M. Block
-
Publication number: 20190314745Abstract: A substrate for use in a filter media including, for example, in a hydrocarbon fluid-water separation filter; methods of identifying the substrate; methods of making the substrate; methods of using the substrate; and methods of improving the roll off angle of the substrate. In some embodiments, the substrate includes a hydrophilic group-containing polymer or a hydrophilic group-containing polymer coating.Type: ApplicationFiled: May 29, 2019Publication date: October 17, 2019Applicant: DONALDSON COMPANY, INC.Inventors: Bradly G. Hauser, Stephen K. Sontag, Davis B. Moravec, Stuti S. Rajgarhia, Andrew J. Dallas, Vijay K. Kapoor, Aflal Rahmathullah, Charles S. Christ, Joseph M. Block
-
Patent number: 10315140Abstract: A substrate for use in a filter media including, for example, in a hydrocarbon fluid-water separation filter; methods of identifying the substrate; methods of making the substrate; methods of using the substrate; and methods of improving the roll off angle of the substrate. In some embodiments, the substrate includes a hydrophilic group-containing polymer or a hydrophilic group-containing polymer coating.Type: GrantFiled: August 16, 2017Date of Patent: June 11, 2019Assignee: DONALDSON COMPANY, INC.Inventors: Bradly G. Hauser, Stephen K. Sontag, Davis B. Moravec, Stuti S. Rajgarhia, Andrew J. Dallas, Vijay K. Kapoor, Aflal Rahmathullah, Charles S. Christ, Joseph M. Block
-
Publication number: 20180050293Abstract: A substrate for use in a filter media including, for example, in a hydrocarbon fluid-water separation filter; methods of identifying the substrate; methods of making the substrate; methods of using the substrate; and methods of improving the roll off angle of the substrate. In some embodiments, the substrate includes a hydrophilic group-containing polymer or a hydrophilic group-containing polymer coating.Type: ApplicationFiled: August 16, 2017Publication date: February 22, 2018Inventors: Bradly G. Hauser, Stephen K. Sontag, Davis B. Moravec, Stuti S. Rajgarhia, Andrew J. Dallas, Vijay K. Kapoor, Aflal Rahmathullah, Charles S. Christ, Joseph M. Block