Patents by Inventor Dennis G. Welygan

Dennis G. Welygan 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).

  • Patent number: 9657207
    Abstract: A method of making shaped ceramic abrasive particles includes cutting a layer of ceramic precursor material using a laser beam and forming shaped ceramic precursor particles. Further thermal processing provides shaped ceramic abrasive particles. Shaped ceramic abrasive particles producible by the methods and abrasive articles containing them are also disclosed.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: May 23, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Dennis G. Welygan, Charles J. Studiner, IV, Dwight D. Erickson
  • Patent number: 9150765
    Abstract: Shaped ceramic articles can be obtained by screen printing the desired shapes from a dispersion of a precursor of the ceramic onto a receiving surface using a transfer assisted technique that applies a differential pressure, at least partially drying the screen printed shapes, and firing them to generate the shaped ceramic articles. Shaped abrasive particles made using lower viscosity sol gels that tended to flow or creep after the screen printing formation were found to have higher grinding performance over screen printed shaped abrasive particles made with higher viscosity sol gels.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: October 6, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Dennis G. Welygan, Dwight D. Erickson, John T. Boden
  • Publication number: 20150267098
    Abstract: A method of making shaped ceramic abrasive particles includes cutting a layer of ceramic precursor material using a laser beam and forming shaped ceramic precursor particles. Further thermal processing provides shaped ceramic abrasive particles. Shaped ceramic abrasive particles producible by the methods and abrasive articles containing them are also disclosed.
    Type: Application
    Filed: June 4, 2015
    Publication date: September 24, 2015
    Inventors: Dennis G. Welygan, Charles J. Studiner, IV, Dwight D. Erickson, Scott A. Baum, Travis L. Potts
  • Patent number: 9073179
    Abstract: A method of making shaped ceramic abrasive particles includes cutting a layer of ceramic precursor material using a laser beam and forming shaped ceramic precursor particles. Further thermal processing provides shaped ceramic abrasive particles. Shaped ceramic abrasive particles producible by the methods and abrasive articles containing them are also disclosed.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: July 7, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Dennis G. Welygan, Charles J. Studiner, IV, Dwight D. Erickson, Edward J. Woo, Pingfan Wu
  • Publication number: 20130255162
    Abstract: Shaped ceramic articles can be obtained by screen printing the desired shapes from a dispersion of a precursor of the ceramic onto a receiving surface using a transfer assisted technique that applies a differential pressure, at least partially drying the screen printed shapes, and firing them to generate the shaped ceramic articles. Shaped abrasive particles made using lower viscosity sol gels that tended to flow or creep after the screen printing formation were found to have higher grinding performance over screen printed shaped abrasive particles made with higher viscosity sol gels.
    Type: Application
    Filed: June 3, 2013
    Publication date: October 3, 2013
    Inventors: Dennis G. Welygan, Dwight D. Erickson, John T. Boden
  • Publication number: 20130212952
    Abstract: A method of making shaped ceramic abrasive particles includes cutting a layer of ceramic precursor material using a laser beam and forming shaped ceramic precursor particles. Further thermal processing provides shaped ceramic abrasive particles. Shaped ceramic abrasive particles producible by the methods and abrasive articles containing them are also disclosed.
    Type: Application
    Filed: October 21, 2011
    Publication date: August 22, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Dennis G. Welygan, Charles J. Studiner, IV, Dwight D. Erickson, Scott A. Baum, Edward J. Woo, Pingfan Wu, Travis L. Potts
  • Patent number: 8480772
    Abstract: Shaped ceramic articles can be obtained by screen printing the desired shapes from a dispersion of a precursor of the ceramic onto a receiving surface using a transfer assisted technique that applies a differential pressure, at least partially drying the screen printed shapes, and firing them to generate the shaped ceramic articles. Shaped abrasive particles made using lower viscosity sol gels that tended to flow or creep after the screen printing formation were found to have higher grinding performance over screen printed shaped abrasive particles made with higher viscosity sol gels.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: July 9, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Dennis G. Welygan, Dwight D. Erickson, John T. Boden
  • Publication number: 20110146509
    Abstract: Shaped ceramic articles can be obtained by screen printing the desired shapes from a dispersion of a precursor of the ceramic onto a receiving surface using a transfer assisted technique that applies a differential pressure, at least partially drying the screen printed shapes, and firing them to generate the shaped ceramic articles. Shaped abrasive particles made using lower viscosity sol gels that tended to flow or creep after the screen printing formation were found to have higher grinding performance over screen printed shaped abrasive particles made with higher viscosity sol gels.
    Type: Application
    Filed: June 30, 2010
    Publication date: June 23, 2011
    Inventors: Dennis G. Welygan, Dwight D. Erickson, John T. Boden
  • Publication number: 20100184363
    Abstract: Fixed abrasive articles comprising a substrate having an abrasive surface and an attachment surface, and at least one engaging projection are described. Generally, the engaging projection comprises a top surface having a top surface edge and an attachment end attached to the attachment surface of the substrate. The area of attachment between the attachment end and the attachment surface is bounded by an attachment perimeter. The engaging projection also comprises a mantle surface extending from the top surface edge to the attachment perimeter. At least one profile of the mantle surface is substantially convex from a point of maximum width along the profile to the attachment perimeter.
    Type: Application
    Filed: September 11, 2007
    Publication date: July 22, 2010
    Inventors: Jason A. Chesley, Dennis G. Welygan, Michael J. Annen
  • Patent number: 7553346
    Abstract: The invention provides a method and apparatus for making an abrasive product comprising providing a substantially horizontally deployed flexible backing having a first surface bearing an at least partially cured primer coating and an opposite second surface; providing a dry flowable particle mixture comprising abrasive particles and particulate curable binder material; depositing a temporary layer comprising said particle mixture on the at least partially cured primer coating of the first surface of the backing; softening said particulate curable binder material to provide adhesion between adjacent abrasive particles; embossing the layer comprising softened particulate curable binder material and abrasive particles to provide a pattern of raised areas and depressed areas and curing the softened particulate curable binder material to convert the embossed layer into a permanent embossed layer comprised of cured particulate binder material and abrasive particles and cure the at least partially cured primer coati
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: June 30, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: Dennis G. Welygan, Jason A. Chesley, Louis S. Moren
  • Patent number: 7491251
    Abstract: A method of making an abrasive product includes compacting a cohesive layer of abrasive particles and particulate curable binder precursor prior to forming curable shaped structures, and then at least partially curing the curable binder precursor.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: February 17, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: Dennis G. Welygan, Kyongcheol Lee, Louis S. Moren
  • Publication number: 20080155904
    Abstract: A method of abrading a metal workpiece including contacting a metal workpiece with an abrasive article, wherein the abrasive article includes a flexible waterproof backing having a first surface bearing a cured primer coating; and a plurality of shaped structures, each structure having a distal end spaced from said backing and an attachment end attached to the primer coating on the backing, said shaped structures including a mixture of abrasive particles and cured particulate binder, wherein the metal workpiece is contacted with the distal ends of the shaped structures to form an abrading interface; moving the abrasive article relative to the metal workpiece while providing sufficient force between the metal workpiece and the distal ends of the shaped structures of the abrasive article to abrade the metal workpiece; and applying liquid coolant proximate the abrading interface.
    Type: Application
    Filed: May 10, 2007
    Publication date: July 3, 2008
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Scott W. Peterson, Dennis G. Welygan, Louis S. Moren, Scott R. Culler, Dean H. Mewes
  • Publication number: 20080160879
    Abstract: A method of abrading a zirconium-based alloy workpiece including the steps of contacting a zirconium-based alloy workpiece with an abrasive article, wherein the abrasive article includes a flexible waterproof backing having a first surface bearing a cured primer coating; and a plurality of shaped structures, each structure having a distal end spaced from said backing and an attachment end attached to the primer coating on the backing, said shaped structures comprising a mixture of abrasive particles having a Knoop hardness greater than 2,200 kg/mm2 and cured particulate binder, wherein the metal workpiece is contacted with the distal ends of the shaped structures to form an abrading interface; moving the abrasive article relative to the metal workpiece while providing sufficient force between the metal workpiece and the distal ends of the shaped structures of the abrasive article to abrade the metal workpiece; and applying liquid coolant proximate the abrading interface.
    Type: Application
    Filed: May 10, 2007
    Publication date: July 3, 2008
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Scott W. Peterson, Dennis G. Welygan, Louis S. Moren, Scott R. Culler, Dean H. Mewes
  • Patent number: 7384437
    Abstract: The invention provides a method and apparatus for making an abrasive product comprising providing a substantially horizontally deployed flexible backing having a first surface bearing an at least partially cured primer coating and an opposite second surface; providing a dry flowable particle mixture comprising abrasive particles and particulate curable binder material; depositing a temporary layer comprising said particle mixture on the at least partially cured primer coating of the first surface of the backing; softening said particulate curable binder material to provide adhesion between adjacent abrasive particles; embossing the layer comprising softened particulate curable binder material and abrasive particles to provide a pattern of raised areas and depressed areas and curing the softened particulate curable binder material to convert the embossed layer into a permanent embossed layer comprised of cured particulate binder material and abrasive particles and cure the at least partially cured primer coati
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: June 10, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Dennis G. Welygan, Jason A. Chesley, Louis S. Moren
  • Patent number: 7297170
    Abstract: The invention provides a method and apparatus for making an abrasive product comprising providing a substantially horizontally deployed flexible backing having a first surface bearing an at least partially cured primer coating and an opposite second surface; providing a dry flowable particle mixture comprising abrasive particles and particulate curable binder material; depositing a temporary layer comprising said particle mixture on the at least partially cured primer coating of the first surface of the backing; softening said particulate curable binder material to provide adhesion between adjacent abrasive particles; embossing the layer comprising softened particulate curable binder material and abrasive particles to provide a pattern of raised areas and depressed areas and curing the softened particulate curable binder material to convert the embossed layer into a permanent embossed layer comprised of cured particulate binder material and abrasive particles and cure the at least partially cured primer coati
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: November 20, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Dennis G. Welygan, Jason A. Chesley, Louis S. Moren
  • Patent number: 7294158
    Abstract: The invention provides a method and apparatus for making an abrasive product comprising providing a substantially horizontally deployed flexible backing having a first surface bearing an at least partially cured primer coating and an opposite second surface; providing a dry flowable particle mixture comprising abrasive particles and particulate curable binder material; depositing a plurality of temporary shaped structures comprised of said particle mixture on the at least partially cured primer coating of the first surface of the backing; softening said particulate curable binder material to provide adhesion between adjacent abrasive particles; and curing the softened particulate curable binder material to convert said temporary shaped structures into permanent shaped structures and cure the at least partially cured primer coating on the first surface of the backing. The invention also provides an abrasive product made by the method.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: November 13, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Dennis G. Welygan, Jason A. Chesley, Louis S. Moren
  • Patent number: 7044989
    Abstract: The invention provides a method and apparatus for making an abrasive product comprising providing a substantially horizontally deployed flexible backing having a first surface bearing an at least partially cured primer coating and an opposite second surface; providing a dry flowable particle mixture comprising abrasive particles and particulate curable binder material; depositing a temporary layer comprising said particle mixture on the at least partially cured primer coating of the first surface of the backing; softening said particulate curable binder material to provide adhesion between adjacent abrasive particles; embossing the layer comprising softened particulate curable binder material and abrasive particles to provide a pattern of raised areas and depressed areas and curing the softened particulate curable binder material to convert the embossed layer into a permanent embossed layer comprised of cured particulate binder material and abrasive particles and cure the at least partially cured primer coati
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: May 16, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Dennis G. Welygan, Jason A. Chesley, Louis S. Moren
  • Patent number: 6969412
    Abstract: The invention provides a method and apparatus for making an abrasive product comprising providing a substantially horizontally deployed flexible backing having a first surface bearing an at least partially cured primer coating and an opposite second surface; providing a dry flowable particle mixture comprising abrasive particles and particulate curable binder material; depositing a plurality of temporary shaped structures comprised of said particle mixture on the at least partially cured primer coating of the first surface of the backing; softening said particulate curable binder material to provide adhesion between adjacent abrasive particles; and curing the softened particulate curable binder material to convert said temporary shaped structures into permanent shaped structures and cure the at least partially cured primer coating on the first surface of the backing. The invention also provides an abrasive product made by the method.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: November 29, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Dennis G. Welygan, Jason A. Chesley, Louis S. Moren
  • Patent number: 6833014
    Abstract: The invention provides a method and apparatus for making an abrasive product comprising providing a substantially horizontally deployed flexible backing having a first surface bearing an at least partially cured primer coating and an opposite second surface; providing a dry flowable particle mixture comprising abrasive particles and particulate curable binder material; depositing a plurality of temporary shaped structures comprised of said particle mixture on the at least partially cured primer coating of the first surface of the backing; softening said particulate curable binder material to provide adhesion between adjacent abrasive particles; and curing the softened particulate curable binder material to convert said temporary shaped structures into permanent shaped structures and cure the at least partially cured primer coating on the first surface of the backing. The invention also provides an abrasive product made by the method.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: December 21, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Dennis G. Welygan, Jason A. Chesley, Louis S. Moren
  • Publication number: 20040018802
    Abstract: The invention provides a method and apparatus for making an abrasive product comprising providing a substantially horizontally deployed flexible backing having a first surface bearing an at least partially cured primer coating and an opposite second surface; providing a dry flowable particle mixture comprising abrasive particles and particulate curable binder material; depositing a plurality of temporary shaped structures comprised of said particle mixture on the at least partially cured primer coating of the first surface of the backing; softening said particulate curable binder material to provide adhesion between adjacent abrasive particles; and curing the softened particulate curable binder material to convert said temporary shaped structures into permanent shaped structures and cure the at least partially cured primer coating on the first surface of the backing. The invention also provides an abrasive product made by the method.
    Type: Application
    Filed: July 26, 2002
    Publication date: January 29, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Dennis G. Welygan, Jason A. Chesley, Louis S. Moren