Patents by Inventor Mark G. Schwabel

Mark G. Schwabel 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).

  • Method of abrading a workpiece
    Patent number: 9662766
    Abstract: A method of abrading a workpiece includes: contacting a metallic workpiece, having a bulk temperature of less than 500 degrees Celsius, with a stationary rotating bonded abrasive wheel having a diameter of at least 150 millimeters, wherein the bonded abrasive wheel comprises ceramic shaped abrasive particles retained in a binder, and wherein metallic swarf is formed, and at least 20 percent by weight of the metallic swarf is filamentary metallic swarf having a length of at least 3 mm.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: May 30, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Mark G. Schwabel, Josef Kofler
  • Ceramic shaped abrasive particles, methods of making the same, and abrasive articles containing the same
    Patent number: 9573250
    Abstract: Ceramic shaped abrasive particles have four major sides joined by six common edges. Each one of the four major sides contacts three other of the four major sides. The six common edges have substantially the same length. Methods of making the ceramic shaped particle are disclosed. The ceramic shaped abrasive particles are useful for abrading a surface of a workpiece. An abrasive article includes the ceramic shaped abrasive particles retained in a binder.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: February 21, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Mark G. Schwabel, Maiken Givot, Negus B. Adefris
  • Bonded abrasive wheel
    Patent number: 9180573
    Abstract: A bonded abrasive wheel comprises ceramic shaped abrasive particles retained in a binder. The ceramic shaped abrasive particles are bounded by a respective base, top and plurality of sides connecting the base and the top. Adjacent sides meet at respective side edges having an average radius of curvature of less than 50 micrometers.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: November 10, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Maiken Givot, Mark G. Schwabel
  • METHOD OF ABRADING A WORKPIECE
    Publication number: 20140287654
    Abstract: A method of abrading a workpiece includes: contacting a metallic workpiece, having a bulk temperature of less than 500 degrees Celsius, with a stationary rotating bonded abrasive wheel having a diameter of at least 150 millimeters, wherein the bonded abrasive wheel comprises ceramic shaped abrasive particles retained in a binder, and wherein metallic swarf is formed, and at least 20 percent by weight of the metallic swarf is filamentary metallic swarf having a length of at least 3 mm.
    Type: Application
    Filed: August 28, 2012
    Publication date: September 25, 2014
    Inventors: Mark G. Schwabel, Josef Kofler
  • Bonded Abrasive Wheel
    Publication number: 20130203328
    Abstract: A bonded abrasive wheel comprises ceramic shaped abrasive particles retained in a binder. The ceramic shaped abrasive particles are bounded by a respective base, top and plurality of sides connecting the base and the top. Adjacent sides meet at respective side edges having an average radius of curvature of less than 50 micrometers.
    Type: Application
    Filed: February 22, 2011
    Publication date: August 8, 2013
    Inventors: Maiken Givot, Mark G. Schwabel
  • CERAMIC SHAPED ABRASIVE PARTICLES, METHODS OF MAKING THE SAME, AND ABRASIVE ARTICLES CONTAINING THE SAME
    Publication number: 20130040537
    Abstract: Ceramic shaped abrasive particles have four major sides joined by six common edges. Each one of the four major sides contacts three other of the four major sides. The six common edges have substantially the same length. Methods of making the ceramic shaped particle are disclosed. The ceramic shaped abrasive particles are useful for abrading a surface of a workpiece. An abrasive article includes the ceramic shaped abrasive particles retained in a binder.
    Type: Application
    Filed: April 20, 2011
    Publication date: February 14, 2013
    Inventors: Mark G. Schwabel, Maiken Givot, Negus B. Adefris
  • Agglomerate abrasive grains and methods of making the same
    Patent number: 7887608
    Abstract: An abrasive agglomerate includes a plurality of abrasive grains bonded together in a three-dimensional structure by a substantially continuous, non-porous inorganic binder, wherein the abrasive grains have an average size of between about 0.5 microns and about 1500 microns, the inorganic binder is less than about 75 percent, by weight, of the abrasive agglomerate, and the bulk density of the abrasive agglomerate is less than about 90 percent of the bulk density of the abrasive grains.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: February 15, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Mark G. Schwabel, Dwight D. Erickson
  • Abrasive article packaging and method of making same
    Patent number: 7661247
    Abstract: A system for packaging resin bonded molded abrasive articles having a flexible package comprising at least one sidewall defining an enclosed volume and at least one resin bonded abrasive article positioned within the enclosed volume. The sidewall comprises a multilayer barrier composite having a water vapor transmission rate that is less than 0.5 grams per 645 square centimeters (100 square inches) per 24 hours.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: February 16, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Mark G. Schwabel, Jeffrey W. Nelson, Joseph A. Scheller
  • AGGLOMERATE ABRASIVE GRAINS AND METHODS OF MAKING THE SAME
    Publication number: 20080236051
    Abstract: An abrasive agglomerate includes a plurality of abrasive grains bonded together in a three-dimensional structure by a substantially continuous, non-porous inorganic binder, wherein the abrasive grains have an average size of between about 0.5 microns and about 1500 microns, the inorganic binder is less than about 75 percent, by weight, of the abrasive agglomerate, and the bulk density of the abrasive agglomerate is less than about 90 percent of the bulk density of the abrasive grains.
    Type: Application
    Filed: June 13, 2008
    Publication date: October 2, 2008
    Inventors: Mark G. Schwabel, Dwight D. Erickson
  • Agglomerate abrasive grains and methods of making the same
    Patent number: 7399330
    Abstract: An abrasive agglomerate includes a plurality of abrasive grains bonded together in a three-dimensional structure by a substantially continuous, non-porous inorganic binder, wherein the abrasive grains have an average size of between about 0.5 microns and about 1500 microns, the inorganic binder is less than about 75 percent, by weight, of the abrasive agglomerate, and the bulk density of the abrasive agglomerate is less than about 90 percent of the bulk density of the abrasive grains.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: July 15, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Mark G. Schwabel, Dwight D. Erickson
  • Abrasive article and methods for grinding glass
    Patent number: 7044835
    Abstract: The present invention is a fixed abrasive article for grinding or polishing the surface of a glass workpiece. The abrasive article for grinding glass has abrasive composites containing agglomerates having diamond particles, and optionally other abrasive particles. The abrasive composites are integrally molded to a backing. The abrasive articles, when used to grind glass, provides a high stock removal rate but provides a smooth surface finish. Lubricant can be used to improve the grinding characteristics of the abrasive article.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: May 16, 2006
    Assignee: 3M Innovaive Properties Company
    Inventors: Ashutosh N. Mujumdar, Todd J. Christianson, Mark G. Schwabel
  • Abrasive article and methods for grinding glass
    Publication number: 20030181144
    Abstract: The present invention is a fixed abrasive article for grinding or polishing the surface of a glass workpiece. The abrasive article for grinding glass has abrasive composites containing agglomerates having diamond particles, and optionally other abrasive particles. The abrasive composites are integrally molded to a backing. The abrasive articles, when used to grind glass, provides a high stock removal rate but provides a smooth surface finish. Lubricant can be used to improve the grinding characteristics of the abrasive article.
    Type: Application
    Filed: October 31, 2002
    Publication date: September 25, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Ashutosh N. Mujumdar, Todd J. Christianson, Mark G. Schwabel
  • Process for durable sol-gel produced alumina-based ceramics and abrasive grain
    Patent number: 5453104
    Abstract: A sol-gel process of producing durable alpha alumina-based ceramic particularly useful as abrasive grain from alpha alumina monohydrate is improved by the addition of a nucleating agent. Improved abrasive products containing the durable ceramic abrasive grains are also provided.
    Type: Grant
    Filed: November 24, 1993
    Date of Patent: September 26, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Mark G. Schwabel
  • Process for durable sol-gel produced alumina-based ceramics, abrasive grain and abrasive products
    Patent number: 4744802
    Abstract: A sol-gel process of producing durable alpha alumina-based ceramic particularly useful as abrasive grain from alpha alumina monohydrate is improved by the addition of a nucleating agent. Improved abrasive products containing the durable ceramic abrasive grains are also provided.
    Type: Grant
    Filed: January 7, 1987
    Date of Patent: May 17, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Mark G. Schwabel