Patents by Inventor Eric S. Epstein
Eric S. Epstein 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: 20260008231Abstract: Sealing components having complex shapes and smooth surfaces are may be fabricated using coreactive three-dimensional printing. More specifically the invention relates to chemically resistant sealing components and methods of making said sealing components using three-dimensional printing, and that may be used in vehicle applications.Type: ApplicationFiled: September 9, 2025Publication date: January 8, 2026Applicant: PPG Industries Ohio, Inc.Inventors: Cynthia Kutchko, Eric S. Epstein, Bryan W. Wilkinson, Zhisong Huang, Sean J. Manion, Kerianne M. Dobosz
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Patent number: 12503544Abstract: Compositions comprising a combination of low molecular weight prepolymers and high molecular weight prepolymers are disclosed. The compositions are used to fabricate elastomeric articles having high tensile strength and high tensile elongation.Type: GrantFiled: February 10, 2020Date of Patent: December 23, 2025Assignee: PPG Industries Ohio, Inc.Inventors: Cynthia Kutchko, Brian Chiang, Bryan W. Wilkinson, Eric S. Epstein, Michael A. Bubas
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Patent number: 12434434Abstract: Sealing components having complex shapes and smooth surfaces are may be fabricated using coreactive three-dimensional printing. More specifically the invention relates to chemically resistant sealing components and methods of making said sealing components using three-dimensional printing, and that may be used in vehicle applications.Type: GrantFiled: February 10, 2020Date of Patent: October 7, 2025Assignee: PPG Industries Ohio, Inc.Inventors: Cynthia Kutchko, Eric S. Epstein, Bryan W. Wilkinson, Zhisong Huang, Sean J. Manion, Kerianne M. Dobosz
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Patent number: 12390992Abstract: Additive manufacturing compositions and methods may include a resin stabilized pigment. The pigment may be easily combined with at least one component of a co-reactive system, such as a co-reactive prepolymer formulation, via solid mixing without the need for grinding or additional solvents. The prepolymer formulation may be pigmented, printed, and cured under ambient conditions, and one or more pigments may be incorporated into the composition to change the color of the composition during printing and/or to selectively change the color of the printed article among several colors.Type: GrantFiled: April 5, 2021Date of Patent: August 19, 2025Assignee: PPG Industries Ohio, Inc.Inventors: Bryan W. Wilkinson, Daniel M. Connor, Cynthia Kutchko, Eric S. Epstein, Scott J. Moravek, Brian K. Rearick, Brian Chiang
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Publication number: 20250144926Abstract: Methods of making multilayer systems comprising a sealant layer by extruding a coreactive sealant composition are disclosed. The methods can be used to fabricate multilayer systems in which individual layers have different cured properties. Individual layers can also have an inhomogeneous concentration of one or more constituents within a layer. The multilayer systems can be made using three-dimensional printing that facilitate the use of a wide range of coreactive compositions.Type: ApplicationFiled: January 9, 2025Publication date: May 8, 2025Inventors: Cynthia Kutchko, Michael A. Bubas, Bryan W. Wilkinson, Eric S. Epstein, Weibin Cui, Renhe Lin
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Patent number: 12226983Abstract: Methods of making multilayer systems comprising a sealant layer by extruding a coreactive sealant composition are disclosed. The methods can be used to fabricate multilayer systems in which individual layers have different cured properties. Individual layers can also have an inhomogeneous concentration of one or more constituents within a layer. The multilayer systems can be made using three-dimensional printing that facilitate the use of a wide range of coreactive compositions.Type: GrantFiled: February 10, 2020Date of Patent: February 18, 2025Assignee: PPG Industries Ohio, Inc.Inventors: Cynthia Kutchko, Michael A. Bubas, Bryan W. Wilkinson, Eric S. Epstein, Weibin Cui, Renhe Lin
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Publication number: 20250050585Abstract: A computer system for dynamically controlling printing parameters within a three-dimensional printer receives an indication for printing a target object by the three-dimensional printer. The computer system accesses a materials attribute dataset. The materials attribute dataset describes different material properties of a plurality of thermoset materials or mixtures thereof. Based upon the materials attribute dataset, for each of the plurality of extruders, the computer system selects one or more thermoset materials among the plurality of thermoset materials for each of the plurality of extruder to form an extrudate and determines an extrusion configuration for the selected one or more thermoset materials. The computer system then generates a command to cause the plurality of extruders of the thermoset three-dimensional printer to implement the extrusion configurations for the plurality of extruders while printing the target object.Type: ApplicationFiled: October 18, 2022Publication date: February 13, 2025Applicant: PPG Industries Ohio, Inc.Inventors: Eric S. Epstein, Anthony Jared Fogl, Michael Anthony Bubas, Kerianne Merceline Dobosz, Minh A. Tong
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Publication number: 20230212435Abstract: Disclosed is a composition comprising a molecule comprising an electrophilic functional group, optionally a second molecule comprising a nucleophilic functional group, and a thermally conductive filler package. The filler package may comprise thermally conductive, electrically insulative filler particles that may have a thermal conductivity of at least 5 W/m·K (measured according to ASTM D7984) and a volume resistivity of at least 10 ?·m (measured according to ASTM D257, C611, or B193) and that may be present in an amount of at least 50% by volume based on total volume of the filler package. The thermally conductive filler package may be present in an amount of at least 10% by volume percent based on total volume of the composition. The present invention also is directed to a method for treating a substrate and to substrates comprising a layer formed from a compositions disclosed herein.Type: ApplicationFiled: April 14, 2021Publication date: July 6, 2023Applicant: PPG Industries Ohio, Inc.Inventors: Liang Ma, Allison G. Condie, Marvin M. Pollum, Jr., Maria S. French, Lorraine Hsu, Shuyu Fang, Hong Li, Calum H. Munro, Cynthia Kutchko, Eric S. Epstein, Gobinda Saha
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Publication number: 20230202103Abstract: Additive manufacturing compositions and methods may include a resin stabilized pigment. The pigment may be easily combined with at least one component of a co-reactive system, such as a co-reactive prepolymer formulation, via solid mixing without the need for grinding or additional solvents. The prepolymer formulation may be pigmented, printed, and cured under ambient conditions, and one or more pigments may be incorporated into the composition to change the color of the composition during printing and/or to selectively change the color of the printed article among several colors.Type: ApplicationFiled: April 5, 2021Publication date: June 29, 2023Applicant: PPG Industries Ohio, Inc.Inventors: Bryan W. Wilkinson, Daniel M. Connor, Cynthia Kutchko, Eric S. Epstein, Scott J. Moravek, Brian K. Rearick, Brian Chiang
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Publication number: 20220134723Abstract: Methods of making multilayer systems comprising a sealant layer by extruding a coreactive sealant composition are disclosed. The methods can be used to fabricate multilayer systems in which individual layers have different cured properties. Individual layers can also have an inhomogeneous concentration of one or more constituents within a layer. The multilayer systems can be made using three-dimensional printing that facilitate the use of a wide range of coreactive compositions.Type: ApplicationFiled: February 10, 2020Publication date: May 5, 2022Applicant: PPG Industries Ohio, Inc.Inventors: Cynthia Kutchko, Michael A. Bubas, Bryan W. Wilkinson, Eric S. Epstein, Weibin Cui, Renhe Lin
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Publication number: 20220126516Abstract: Coreactive three-dimensional printing of parts using coreactive compositions is disclosed. Coreactive additive manufacturing can be used to fabricate parts having a wide range of properties.Type: ApplicationFiled: February 10, 2020Publication date: April 28, 2022Applicant: PPG Industries Ohio, Inc.Inventors: Cynthia Kutchko, Eric S. Epstein, Bryan W. Wilkinson, Michael A. Bubas
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Publication number: 20220098355Abstract: Compositions comprising a combination of low molecular weight prepolymers and high molecular weight prepolymers are disclosed. The compositions are used to fabricate elastomeric articles having high tensile strength and high tensile elongation.Type: ApplicationFiled: February 10, 2020Publication date: March 31, 2022Applicant: PPG Industries Ohio, Inc.Inventors: Cynthia Kutchko, Brian Chiang, Bryan W. Wilkinson, Eric S. Epstein, Michael A. Bubas
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Publication number: 20220097299Abstract: Sealing components having complex shapes and smooth surfaces are may be fabricated using coreactive three-dimensional printing. More specifically the invention relates to chemically resistant sealing components and methods of making said sealing components using three-dimensional printing, and that may be used in vehicle applications.Type: ApplicationFiled: February 10, 2020Publication date: March 31, 2022Applicant: PPG Industries Ohio, Inc.Inventors: Cynthia Kutchko, Eric S. Epstein, Bryan W. Wilkinson, Zhisong Huang, Sean J. Manion, Kerianne M. Dobosz
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Patent number: 10073293Abstract: An optical microcavity for a high-contrast display comprises an enclosed cavity having a front wall and a back wall, where the front wall comprises a pinhole opening for emission of light from the cavity and the back wall is configured to generate or transmit light into the cavity. An outer surface of the front wall absorbs some or substantially all optical wavelengths of externally incident light so as to appear black or colored. An inner surface of the front wall comprises a light reflectivity of greater than 90% to promote photon recycling within the cavity and light emission through the pinhole opening.Type: GrantFiled: April 11, 2017Date of Patent: September 11, 2018Assignee: The Board of Trustees of the University of IllinoisInventors: Paul V. Braun, Osman S. Cifci, Eric S. Epstein, Hao Chen, Lu Xu, Ralph G. Nuzzo
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Publication number: 20170293169Abstract: An optical microcavity for a high-contrast display comprises an enclosed cavity having a front wall and a back wall, where the front wall comprises a pinhole opening for emission of light from the cavity and the back wall is configured to generate or transmit light into the cavity. An outer surface of the front wall absorbs some or substantially all optical wavelengths of externally incident light so as to appear black or colored. An inner surface of the front wall comprises a light reflectivity of greater than 90% to promote photon recycling within the cavity and light emission through the pinhole opening.Type: ApplicationFiled: April 11, 2017Publication date: October 12, 2017Inventors: Paul V. Braun, Osman S. Cifci, Eric S. Epstein, Hao Chen, Lu Xu, Ralph G. Nuzzo