Patents by Inventor Kathleen S. Shafer
Kathleen S. Shafer 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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Patent number: 11976148Abstract: A curable composition comprising: a hydroxy-functional or ether-functional (meth)acrylate copolymer, an epoxy resin; water; a photocatalyst, and optionally a polyvinyl acetal polymer and/or a film-forming polymer. When cured, provides structural bonding adhesives that are curable under high humidity conditions.Type: GrantFiled: May 30, 2019Date of Patent: May 7, 2024Assignee: 3M Innovative Properties CompanyInventors: Kelly A. Volp, Kathleen S. Shafer, Peter O. Rekow, Jonathan E. Janoski, Thomas Q. Chastek, Bradford L. Ryland, Douglas L. Elmore
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Patent number: 11945944Abstract: The disclosure relates to a curable composition comprising: a polymerizable epoxy-acrylate resin composition having a complex viscosity at 25° C. and 1 Hz frequency of at least about 4500 Pa-s and a probe tack peak force of at least about 300 kPa; and abrasive particles partially or fully embedded in the polymerizable epoxy-acrylate resin composition. The disclosure also relates to cured compositions formed from such curable compositions, wherein the abrasive particles are partially or fully embedded in the cured composition. In addition, the disclosure relates to abrasive articles made from such cured compositions as well as methods for making abrasive articles.Type: GrantFiled: December 4, 2017Date of Patent: April 2, 2024Assignee: 3M Innovative Properties CompanyInventors: Kathleen S. Shafer, Rebecca A. Putans, Ernest L. Thurber, Cyrus A. Anderson, Corinne E. Lipscomb, Thomas J. Nelson, Gregory P. Sorenson, Chainika Jangu
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Patent number: 11866609Abstract: The present invention is an optically clear adhesive composition including a free-radically polymerizable acrylate or meth(acrylate) functional group oligomer, a trialkyl borane complex initiator, a photoacid generator, and a photosensitizer. A viscosity of the composition immediately after mixing and a viscosity of the composition about 24 hours after mixing changes by less than about 10%.Type: GrantFiled: December 10, 2018Date of Patent: January 9, 2024Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Christopher J. Campbell, John W. Campbell, Mark F. Ellis, Kathleen S. Shafer, Wayne S. Mahoney
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Patent number: 11865673Abstract: The disclosure relates to layers comprising a body having a thickness, T, comprising a curable composition comprising a polymerizable epoxy-acrylate resin composition and abrasive particles at least partially embedded in the polymerizable epoxy-acrylate resin composition, wherein the body includes a plurality of void spaces free of the curable composition extending into the body from the first major surface and the depth of the plurality of void spaces is at least 10 percent of thickness T. The disclosure also relates to cured compositions formed from such curable compositions and, in turn, abrasive articles made from such cured compositions as well as methods for making abrasive articles.Type: GrantFiled: December 6, 2018Date of Patent: January 9, 2024Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Chainika Jangu, Michael J. Annen, Deborah J. Eilers, David M. Mahli, Caroline E. Morel, Kathleen S. Shafer, Gregory P. Sorenson
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Patent number: 11845885Abstract: Provided are methods and associated compositions directed to a structural bonding adhesive. The structural bonding adhesive is made by mixing a curable composition comprising a mixture of a first curable resin and a second curable resin to provide an uncured adhesive. The uncured adhesive is irradiated by a first actinic light source to polymerize the first curable resin without polymerizing the second curable resin to provide a partially cured adhesive. The partially cured adhesive is a pressure-sensitive adhesive that displays cold flow creep recovery under ambient conditions and is capable of being fully cured by irradiating the partially cured adhesive using a second actinic light source that is different from the first actinic light source to polymerize the second curable resin.Type: GrantFiled: December 28, 2016Date of Patent: December 19, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Matthew J. Schmid, Cyrus A. Anderson, Kathleen S. Shafer, Xiao Gao, James M. Nelson
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Patent number: 11773295Abstract: Methods of bonding together substrates that do not require use of primers, mixing, fixturing, or autoclaving. These methods can include the steps of disposing an adhesive layer on a bonding surface of either substrate, the adhesive layer comprising a curable composition that is dimensionally stable at ambient conditions; either before or after disposing the adhesive layer on the bonding surface, irradiating the adhesive layer with ultraviolet radiation to initiate curing of the curable composition; placing one substrate so as to be bonded to the other substrate by the adhesive layer; and allowing the adhesive layer to cure.Type: GrantFiled: June 6, 2022Date of Patent: October 3, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Cyrus A. Anderson, Thomas Q. Chastek, Xiao Gao, Kathleen S. Shafer, Sheng Ye
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Patent number: 11655403Abstract: A curable mixture, a partially cured composition, a cured composition, an article containing either the partially cured composition or the cured composition, and a method of bonding two substrates are provided. The partially cured composition functions as a pressure-sensitive adhesive while the cured composition functions as a structural or semi-structural adhesive. The curable mixture can be applied to a first substrate by printing or dispensing, if desired.Type: GrantFiled: June 27, 2018Date of Patent: May 23, 2023Assignee: 3M Innovative Properties CompanyInventors: Kelly A. Volp, Kathleen S. Shafer, Ross E. Behling, Ann M. Gilman, Mark F. Ellis, Matthew R. D. Smith, Aaron T. Hedegaard, Xiaoming Jiang, Cyrus A. Anderson
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Publication number: 20230116424Abstract: A core-sheath filament is provided that includes a curable composition. The curable composition contains an epoxy resin and a photoacid generator. Methods of making the core-sheath filament and methods of using the core-sheath filament for printing and bonding are provided. The core-sheath filaments can be used to form a cured composition having structural bonding performance.Type: ApplicationFiled: March 16, 2021Publication date: April 13, 2023Inventors: Kathleen S. Shafer, Thomas Q. Chastek, Mark E. Napierala, Jacob D. Young, Ross E. Behling, Shaun M. West, John Christopher Thomas
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Publication number: 20220298383Abstract: Methods of bonding together substrates that do not require use of primers, mixing, fixturing, or autoclaving. These methods can include the steps of disposing an adhesive layer on a bonding surface of either substrate, the adhesive layer comprising a curable composition that is dimensionally stable at ambient conditions; either before or after disposing the adhesive layer on the bonding surface, irradiating the adhesive layer with ultraviolet radiation to initiate curing of the curable composition; placing one substrate so as to be bonded to the other substrate by the adhesive layer; and allowing the adhesive layer to cure.Type: ApplicationFiled: June 6, 2022Publication date: September 22, 2022Inventors: Cyrus A. Anderson, Thomas Q. Chastek, Xiao Gao, Kathleen S. Shafer, Sheng Ye
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Patent number: 11370944Abstract: An adhesive composition is described comprising a tetrahydrofurfuryl (meth)acrylate copolymer; an epoxy resin; a polyether polyol; and a hydroxy-functional film-forming polymer. The adhesive may be used in structural and semi-structural bonding applications.Type: GrantFiled: May 11, 2020Date of Patent: June 28, 2022Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Kathleen S. Shafer, Thomas Q. Chastek, Cyrus A. Anderson
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Patent number: 11370940Abstract: An adhesive article comprising first and second tacky latent adhesive layers disposed on respective first and second opposed major surfaces of a substrate. Each of the first and second tacky latent adhesive layers independently comprises at least one polymerizable component, and a redox initiator system comprising a transition metal complex that participates in a redox cycle, an oxidizing agent, and a blocked reducing agent represented by the formula ((I). Each of R1 and R2 are independently H, an alkyl, an aryl, or RPhoto5 with the proviso that at least one of R1 and R2 is RPhoto. RPhoto represents a photoremovable group. Each of R3 and R4 independently represents H, an alkyl group, or an aryl group comprising a monovalent ester, ether, urethane, or carbonate group. Methods of making and using the adhesive articles are also disclosed.Type: GrantFiled: May 16, 2018Date of Patent: June 28, 2022Assignee: 3M Innovative Properties CompanyInventors: Erik M. Townsend, Shantanu R. Ranade, William H. Moser, Kathleen S. Shafer, Michael A. Kropp, Jayshree Seth, Ross E. Behling
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Patent number: 11352524Abstract: Methods of bonding together substrates that do not require use of primers, mixing, fixturing, or autoclaving. These methods can include the steps of disposing an adhesive layer on a bonding surface of either substrate, the adhesive layer comprising a curable composition that is dimensionally stable at ambient conditions; either before or after disposing the adhesive layer on the bonding surface, irradiating the adhesive layer with ultraviolet radiation to initiate curing of the curable composition; placing one substrate so as to be bonded to the other substrate by the adhesive layer; and allowing the adhesive layer to cure.Type: GrantFiled: January 21, 2021Date of Patent: June 7, 2022Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Cyrus A. Anderson, Thomas Q. Chastek, Xiao Gao, Kathleen S. Shafer, Sheng Ye
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Publication number: 20210277283Abstract: An adhesive article comprising first and second tacky latent adhesive layers disposed on respective first and second opposed major surfaces of a substrate. Each of the first and second tacky latent adhesive layers independently comprises at least one polymerizable component, and a redox initiator system comprising a transition metal complex that participates in a redox cycle, an oxidizing agent, and a blocked reducing agent represented by the formula ((I). Each of R1 and R2 are independently H, an alkyl, an aryl, or RPhoto5 with the proviso that at least one of R1 and R2 is RPhoto. RPhoto represents a photoremovable group. Each of R3 and R4 independently represents H, an alkyl group, or an aryl group comprising a monovalent ester, ether, urethane, or carbonate group. Methods of making and using the adhesive articles are also disclosed.Type: ApplicationFiled: May 16, 2018Publication date: September 9, 2021Inventors: Erik M. Townsend, Shantanu R. Ranade, William H. Moser, Kathleen S. Shafer, Michael A. Kropp, Jayshree Seth, Ross E. Behling
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Publication number: 20210206897Abstract: A curable composition comprising: a hydroxy-functional or ether-functional (meth)acrylate copolymer, an epoxy resin; water, a photocatalyst, and optionally a polyvinyl acetal polymer and/or a film-forming polymer. When cured, provides structural bonding adhesives that are curable under high humidity conditions.Type: ApplicationFiled: May 30, 2019Publication date: July 8, 2021Inventors: Kelly A. Volp, Kathleen S. Shafer, Peter O. Rekow, Jonathan E. Janoski, Thomas Q. Chastek, Bradford L. Ryland, Douglas L. Elmore
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Patent number: 11034866Abstract: An adhesive article is described comprising a foamed adhesive layer and a non-foamed adhesive layer. The adhesive of each adhesive layer comprises a tetrahydrofurfuryl (meth)acrylate copolymer; an epoxy resin; a polyether polyol; and optionally a hydroxy-functional film-forming polymer. The adhesive may be used in structural and semi-structural bonding applications and is designed to fail cohesively.Type: GrantFiled: November 21, 2017Date of Patent: June 15, 2021Assignee: 3M Innovative Properties CompanyInventors: Cyrus A. Anderson, Kathleen S. Shafer, Thomas Q. Chastek, Jonathan E. Janoski, Michael C. Martin, Anthony F. Schultz, Carla S. Thomas, Peter O. Rekow
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Publication number: 20210170547Abstract: The disclosure relates to layers comprising a body having a thickness, T, comprising a curable composition comprising a polymerizable epoxy-acrylate resin composition and abrasive particles at least partially embedded in the polymerizable epoxy-acrylate resin composition, wherein the body includes a plurality of void spaces free of the curable composition extending into the body from the first major surface and the depth of the plurality of void spaces is at least 10 percent of thickness T. The disclosure also relates to cured compositions formed from such curable compositions and, in turn, abrasive articles made from such cured compositions as well as methods for making abrasive articles.Type: ApplicationFiled: December 6, 2018Publication date: June 10, 2021Inventors: Chainika Jangu, Michael J. Annen, Deborah J. Eilers, David M. Mahli, Caroline E. Morel, Kathleen S. Shafer, Gregory P. Sorenson
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Publication number: 20210139741Abstract: Methods of bonding together substrates that do not require use of primers, mixing, fixturing, or autoclaving. These methods can include the steps of disposing an adhesive layer on a bonding surface of either substrate, the adhesive layer comprising a curable composition that is dimensionally stable at ambient conditions; either before or after disposing the adhesive layer on the bonding surface, irradiating the adhesive layer with ultraviolet radiation to initiate curing of the curable composition; placing one substrate so as to be bonded to the other substrate by the adhesive layer; and allowing the adhesive layer to cure.Type: ApplicationFiled: January 21, 2021Publication date: May 13, 2021Inventors: Cyrus A. Anderson, Thomas Q. Chastek, Xiao Gao, Kathleen S. Shafer, Sheng Ye
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Patent number: 10927276Abstract: Methods of bonding hardware to glass and other substrates are provided that do not require use of primers, mixing, fixturing, or autoclaving. These methods include the steps of disposing an adhesive layer on a bonding surface of either the hardware or the vehicular glass, the adhesive layer comprising a curable composition that is dimensionally stable at ambient conditions; either before or after disposing the adhesive layer on the bonding surface, irradiating the adhesive layer with ultraviolet radiation to initiate curing of the curable composition; placing the hardware so as to be bonded to the vehicular glass by the adhesive layer; and allowing the adhesive layer to cure.Type: GrantFiled: June 1, 2016Date of Patent: February 23, 2021Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Cyrus A. Anderson, Thomas Q. Chastek, Xiao Gao, Kathleen S. Shafer, Sheng Ye
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Patent number: 10836844Abstract: Polymerizable compositions comprising a redox initiator system is disclosed. The redox initiators comprises a photolabile reducing agent, that photolyzes and initiates the redox cycle. Dental compositions comprising dental resins and the photolabile redox initiator system are also described.Type: GrantFiled: November 23, 2016Date of Patent: November 17, 2020Assignee: 3M Innovative Properties CompanyInventors: Erik M. Townsend, William H. Moser, Shantanu R. Ranade, Kathleen S. Shafer, Michael A. Kropp, Ross E. Behling, Jason D. Clapper
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Publication number: 20200317956Abstract: The present invention is an optically clear adhesive composition including a free-radically polymerizable acrylate or meth(acrylate) functional group oligomer, a trialkyl borane complex initiator, a photoacid generator, and a photosensitizer. A viscosity of the composition immediately after mixing and a viscosity of the composition about 24 hours after mixing changes by less than about 10%.Type: ApplicationFiled: December 10, 2018Publication date: October 8, 2020Inventors: Christopher J. Campbell, John W. Campbell, Mark F. Ellis, Kathleen S. Shafer, Wayne S. Mahoney