Patents by Inventor Mark A. Lukowski
Mark A. Lukowski 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: 20240033880Abstract: Grinding aid particles for abrasive articles. The grinding aid particles include a core particle having a Mohs hardness of less than 7 and a coating on at least a portion of the surface of the core. The coating comprises a binder and at least one grinding agent. The grinding aid particles can be incorporated in the make coat, size coat and/or supersize coat of an abrasive article to improve abrasive performance.Type: ApplicationFiled: November 30, 2021Publication date: February 1, 2024Inventors: Adam D. Miller, Joseph B. Eckel, Ann M. Hawkins, Thomas J. Nelson, Junting Li, Mark A. Lukowski
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Publication number: 20230405766Abstract: A method of making a coated abrasive article includes disposing a precursor make layer on a major surface of the backing, optionally partially curing the precursor make layer to provide a partially cured precursor make layer, disposing abrasive particles; partially embedding abrasive particles in the optionally partially cured precursor make layer; and further curing the optionally partially cured precursor make layer to form a make layer. The precursor make layer comprises components comprising: a) 50 to 97.99 percent by weight of phenol-formaldehyde resin; b) 1 to 49 percent by weight of resorcinol-formaldehyde resin; c) 1 to 49 percent by weight of at least one compound having at least one free-radically polymerizable group; and d) 0.01 to 1 percent by weight of a free-radical initiator. A size layer and/or supersize layer may be disposed over the make layer and abrasive articles. Coated abrasive articles made by the method are also disclosed.Type: ApplicationFiled: September 22, 2021Publication date: December 21, 2023Inventors: Junting Li, Yu Yang, Jing Zhang, Michael J. Annen, Ernest L. Thurber, Eric W. Nelson, Mark A. Lukowski, Chunjie Zhang
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Patent number: 11795287Abstract: Various embodiments disclosed relate to pore inducers and porous abrasive forms made using the same. In various embodiments, the present invention provides a method of forming a porous abrasive form including heating an abrasive composition including pore inducers to form the porous abrasive form. During the heating the pore inducers in the porous abrasive form reduce in volume to form induced pores in the porous abrasive form.Type: GrantFiled: June 24, 2021Date of Patent: October 24, 2023Assignee: 3M Innovative Properties CompanyInventors: Brian D. Goers, Mark A. Lukowski, Walter Flaschberger, Ernest L. Thurber, John E. Gozum
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Publication number: 20230294247Abstract: A multiphase abrasive particle precursor is disclosed. The precursor includes a first phase of a first material with a substantially constant first composition throughout the first phase. The precursor also includes a second phase, of a second material, with a substantially constant composition throughout the second phase. The precursor includes an interface between the first and second phases. The multiphase abrasive particle precursor is a shaped abrasive particle precursor.Type: ApplicationFiled: May 20, 2021Publication date: September 21, 2023Inventors: Yuyang Liu, Fay T. Salmon, Maiken Givot, Dwight D. Erickson, Negus B. Adefris, Mark A. Lukowski
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Publication number: 20230220255Abstract: Various embodiments disclosed relate to an incomplete shaped abrasive particle, articles containing the same, and methods of manufacture.Type: ApplicationFiled: May 19, 2021Publication date: July 13, 2023Inventors: Yuyang Liu, Fay T. Salmon, Maiken Givot, Mark A. Lukowski, Dwight D. Erikson, Negus B. Adefris
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Patent number: 11607776Abstract: An abrasive agglomerate particle includes fused aluminum oxide mineral bonded in a vitreous matrix. The fused aluminum oxide mineral is present in a range from 70 percent by weight to 95 percent by weight and the vitreous matrix is present at least at five percent by weight, based on the weight of the abrasive agglomerate particle. The fused aluminum oxide mineral has an average particle size of up to 300 micrometers, and the abrasive agglomerate particle has a frusto-pyramidal shape with side walls having a taper angle in a range from 2 to 15 degrees and a dimension of at least 400 micrometers. The abrasive agglomerate particles are useful in abrasive articles. The method includes contacting the workpiece with an abrasive article and moving the workpiece and the abrasive article relative to each other to abrade the workpiece.Type: GrantFiled: July 19, 2017Date of Patent: March 21, 2023Assignee: 3M Innovative Properties CompanyInventors: Mark A. Lukowski, Brian D. Goers, Negus B. Adefris, Scott W. Peterson
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Patent number: 11597860Abstract: Magnetizable abrasive particles are described comprising ceramic particles having outer surfaces comprising a coating of unsintered polyion and magnetic particles bonded to the polyion. In favored embodiments, the magnetic particles have a magnetic saturation of at least 10, 15, 20, 25, 30, 35, 40, 45 or 50 emu/gram. In another embodiment, an abrasive article is described comprising a plurality of magnetizable abrasive particles as described herein retained in a binder material. Also described are method of making magnetizable abrasive particles and methods of making an abrasive article comprising magnetizable abrasive particles.Type: GrantFiled: October 24, 2017Date of Patent: March 7, 2023Assignee: 3M Innovative Properties CompanyInventors: Adam D. Miller, Sergei Manuilov, Naiyong Jing, Taisiya Skorina, Aaron K. Nienaber, Joseph B. Eckel, Thomas J. Anderson, Thomas J. Nelson, Mark A. Lukowski, Louis S. Moren, Don V. West
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Patent number: 11478899Abstract: A shaped abrasive agglomerate particle includes a shaped abrasive particle bonded in a vitreous matrix. The shaped abrasive particles have a longest particle lineal dimension on a surface and a shortest particle dimension perpendicular to the longest particle lineal dimension, and the longest particle lineal dimension is at least twice the shortest particle dimension. The shaped abrasive agglomerate particle has a longest agglomerate lineal dimension on a surface and a shortest agglomerate dimension perpendicular to the longest agglomerate lineal dimension, and the longest agglomerate lineal dimension is at least twice the shortest agglomerate dimension. The abrasive agglomerate particles are useful in abrasive articles. Methods of making the shaped abrasive agglomerate particle and abrading a workpiece are also described.Type: GrantFiled: October 25, 2017Date of Patent: October 25, 2022Assignee: 3M Innovative Properties CompanyInventors: Mark A. Lukowski, Negus B. Adefris, Scott W. Peterson, Brian D. Goers, Rebecca A. Putans, Bridgette R. Shannon, Thomas J. Nelson, Jacob S. Beveridge
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Publication number: 20220016747Abstract: A coated abrasive article comprises a backing having first and second opposed major surfaces. A make layer is bonded to the first major surface. Agglomerate grinding aid particles are directly bonded to the make layer. At least a portion of the agglomerate grinding aid particles comprise grinding aid particles retained in a binder, and are arranged according to an open predetermined pattern. Abrasive particles are directly bonded to the make layer in spaces between the agglomerate grinding aid particles. A size layer is directly bonded to the make layer, agglomerate grinding aid particles, and abrasive particles. A method of making a coated abrasive article, in which the agglomerate grinding aid particles are deposited onto a curable make layer precursor prior to depositing abrasive particles onto the curable make layer precursor in spaces between the agglomerate grinding aid particles is also disclosed.Type: ApplicationFiled: December 6, 2019Publication date: January 20, 2022Inventors: Junting Li, Yuyang Liu, Mark A. Lukowski, Ernest L. Thurber, Brian G. Koethe, Ann M. Hawkins, Geoffrey I. Wilson
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Publication number: 20210317282Abstract: Various embodiments disclosed relate to pore inducers and porous abrasive forms made using the same. In various embodiments, the present invention provides a method of forming a porous abrasive form including heating an abrasive composition including pore inducers to form the porous abrasive form. During the heating the pore inducers in the porous abrasive form reduce in volume to form induced pores in the porous abrasive form.Type: ApplicationFiled: June 24, 2021Publication date: October 14, 2021Inventors: Brian D. Goers, Mark A. Lukowski, Walter Flaschberger, Ernest L. Thurber, John E. Gozum
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Patent number: 11078345Abstract: Various embodiments disclosed relate to pore inducers and porous abrasive forms made using the same. In various embodiments, the present invention provides a method of forming a porous abrasive form including heating an abrasive composition including pore inducers to form the porous abrasive form. During the heating the pore inducers in the porous abrasive form reduce in volume to form induced pores in the porous abrasive form.Type: GrantFiled: May 11, 2017Date of Patent: August 3, 2021Assignee: 3M Innovative Properties CompanyInventors: Brian D. Goers, Mark A. Lukowski, Walter Flaschberger, Ernest L. Thurber, John E. Gozum
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Publication number: 20210122959Abstract: The present disclosure provides an abrasive article. The abrasive article includes a base. The abrasive article further includes a plurality of soft shaped abrasive particles distributed about the base.Type: ApplicationFiled: May 6, 2019Publication date: April 29, 2021Inventors: Scott M. Mevissen, Mark A. Lukowski, Thomas J. Nelson, Kaylee R. Schmall, Myhanh T. Truong
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Patent number: 10947432Abstract: A method of making magnetizable abrasive particles includes: moistening the outer surfaces of ceramic particles with waterglass to provide moistened ceramic particles. Magnetizable particles are contacted with the moistened ceramic particles to provide powder-coated ceramic particles. The powder-coated ceramic particles are heated to at least a temperature sufficient to bond the magnetizable particles of the powder-coated ceramic particles to the respective ceramic particles thereby providing the magnetizable abrasive particles. On a respective basis, each magnetizable abrasive particle comprises a respective ceramic particle having a magnetizable particles bonded thereto.Type: GrantFiled: October 12, 2017Date of Patent: March 16, 2021Assignee: 3M Innovative Properties CompanyInventors: Aaron K. Nienaber, Joseph B. Eckel, Thomas J. Anderson, Thomas J. Nelson, Mark A. Lukowski, Louis S. Moren, Don V. West
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Patent number: 10655038Abstract: A method of making magnetizable abrasive particles includes providing a slurry layer disposed on a substrate. The slurry layer has an exposed surface and comprises magnetic particles, a binder precursor, and a liquid vehicle. Abrasive particles are electrostatically contacted with the slurry layer such that they are aligned substantially oriented perpendicular to the surface of the substrate, and are partially embedded within the slurry layer. The liquid vehicle is at least partially removed from the slurry layer and the binder precursor is converted into a binder to provide a magnetizable layer comprising the magnetic particles partially embedded in the binder. The magnetizable abrasive particles are separated from the releasable substrate. Each magnetizable abrasive particle respectively comprises a portion of the magnetizable layer disposed on a portion of an abrasive particle.Type: GrantFiled: October 5, 2017Date of Patent: May 19, 2020Assignee: 3M Innovative Properties CompanyInventors: Jaime A. Martinez, Thomas J. Nelson, Mark A. Lukowski
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Publication number: 20200071584Abstract: Magnetizable abrasive particles are described comprising ceramic particles having outer surfaces comprising a coating of unsintered polyion and magnetic particles bonded to the polyion. In favored embodiments, the magnetic particles have a magnetic saturation of at least 10, 15, 20, 25, 30, 35, 40, 45 or 50 emu/gram. In another embodiment, an abrasive article is described comprising a plurality of magnetizable abrasive particles as described herein retained in a binder material. Also described are method of making magnetizable abrasive particles and methods of making an abrasive article comprising magnetizable abrasive particles.Type: ApplicationFiled: October 24, 2017Publication date: March 5, 2020Inventors: Adam D. Miller, Sergei Manuilov, Naiyong Jing, Taisiya Skorina, Aaron K. Nienaber, Joseph B. Eckel, Thomas J. Anderson, Thomas J. Nelson, Mark A. Lukowski, Louis S. Moren, Don V. West
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Publication number: 20200047313Abstract: A shaped abrasive agglomerate particle includes a shaped abrasive particle bonded in a vitreous matrix. The shaped abrasive particles have a longest particle lineal dimension on a surface and a shortest particle dimension perpendicular to the longest particle lineal dimension, and the longest particle lineal dimension is at least twice the shortest particle dimension. The shaped abrasive agglomerate particle has a longest agglomerate lineal dimension on a surface and a shortest agglomerate dimension perpendicular to the longest agglomerate lineal dimension, and the longest agglomerate lineal dimension is at least twice the shortest agglomerate dimension. The abrasive agglomerate particles are useful in abrasive articles. Methods of making the shaped abrasive agglomerate particle and abrading a workpiece are also described.Type: ApplicationFiled: October 25, 2017Publication date: February 13, 2020Inventors: Mark A. Lukowski, Negus B. Adefris, Scott W. Peterson, Brian D. Goers, Rebecca A. Putans, Bridgette R. Shannon, Thomas J. Nelson, Jacob S. Beveridge
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Publication number: 20190283214Abstract: Methods for manufacturing bonded abrasive articles, for example vitrified bonded grinding wheels. A bondable abrasive composition is prepared including abrasive particles, a binder medium and a gamma-pyrone pore inducing material, such as ethyl maltol. A precursor abrasive structure is formed from the composition. The gamma-pyrone pore inducing material is removed from the precursor abrasive structure to provide a porous precursor abrasive structure that is further processed to provide a bonded abrasive article. In some embodiments, the binder medium includes a vitreous bonding material, and the bonded abrasive article is a porous vitrified bonded grinding wheel.Type: ApplicationFiled: June 4, 2019Publication date: September 19, 2019Inventor: Mark A. Lukowski
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Publication number: 20190283216Abstract: An abrasive agglomerate particle includes fused aluminum oxide mineral bonded in a vitreous matrix. The fused aluminum oxide mineral is present in a range from 70 percent by weight to 95 percent by weight and the vitreous matrix is present at least at five percent by weight, based on the weight of the abrasive agglomerate particle. The fused aluminum oxide mineral has an average particle size of up to 300 micrometers, and the abrasive agglomerate particle has a frusto-pyramidal shape with side walls having a taper angle in a range from 2 to 15 degrees and a dimension of at least 400 micrometers. The abrasive agglomerate particles are useful in abrasive articles. The method includes contacting the workpiece with an abrasive article and moving the workpiece and the abrasive article relative to each other to abrade the workpiece.Type: ApplicationFiled: July 19, 2017Publication date: September 19, 2019Inventors: Mark A. Lukowski, Brian D. Goers, Negus B. Adefris, Scott W. Peterson
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Publication number: 20190270921Abstract: A method of making magnetizable abrasive particles includes providing a slurry layer disposed on a substrate. The slurry layer has an exposed surface and comprises magnetic particles, a binder precursor, and a liquid vehicle. Abrasive particles are electrostatically contacted with the slurry layer such that they are aligned substantially oriented perpendicular to the surface of the substrate, and are partially embedded within the slurry layer. The liquid vehicle is at least partially removed from the slurry layer and the binder precursor is converted into a binder to provide a magnetizable layer comprising the magnetic particles partially embedded in the binder. The magnetizable abrasive particles are separated from the releasable substrate. Each magnetizable abrasive particle respectively comprises a portion of the magnetizable layer disposed on a portion of an abrasive particle.Type: ApplicationFiled: October 5, 2017Publication date: September 5, 2019Inventors: Jaime A. Martinez, Thomas J. Nelson, Mark A. Lukowski
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Publication number: 20190270922Abstract: Magnetizable agglomerate abrasive particle can comprise constituent abrasive particles retained in a binder material. The magnetizable particles and the constituent abrasive particles are unassociated, and wherein the magnetizable particles have a Mohs hardness of 6 or less. Magnetizable agglomerate abrasive particles can also comprise magnetizable abrasive particles retained in a binder material, wherein each magnetizable abrasive particle comprises a respective ceramic body and a magnetizable layer disposed on at least a portion of the ceramic body. Pluralities of abrasive particles are also disclosed. Methods of making, and abrasive articles including the magnetizable agglomerate particles are also disclosed.Type: ApplicationFiled: September 27, 2017Publication date: September 5, 2019Inventors: Negus B. Adefris, Gary M. Palmgren, Joseph B. Eckel, Aaron K. Nienaber, Thomas J. Nelson, Mark A. Lukowski, Vincent R. Jansen