Patents by Inventor Edward J. Woo

Edward J. Woo 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: 7452265
    Abstract: An abrasive article with an integral dust collection system. The abrasive article comprises a porous abrasive layer with openings, a first filter media with channels, a second filter media, a third filter media with channels, a fourth filter media, and an optional attachment layer. The openings of the porous abrasive layer cooperate with the channels to allow the flow of particles from the abrasive surface to the filter media.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: November 18, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas W. Rambosek, Edward J. Woo, Curtis J. Schmidt
  • Publication number: 20080233850
    Abstract: An abrasive article comprises a porous abrasive member, a nonwoven filter medium, a second nonwoven filter medium, and optionally a porous attachment layer. A plurality of openings in the porous abrasive member cooperates with the first nonwoven filter medium to allow the flow of particles from an outer abrasive surface of the porous abrasive member to the second nonwoven filter medium. Methods of making and using the abrasive articles are included.
    Type: Application
    Filed: March 20, 2007
    Publication date: September 25, 2008
    Inventors: Edward J. Woo, Thomas W. Rambosek, Seyed A. Angadjivand, Mary B. Donovan, Rufus C. Sanders, Yeun-Jong Chou
  • Publication number: 20080229672
    Abstract: An abrasive article comprises a porous abrasive member, a nonwoven filter medium, and a porous attachment fabric. A plurality of openings in the porous abrasive member cooperates with the nonwoven filter medium to allow the flow of particles from an outer abrasive surface of the porous abrasive member to the porous attachment fabric. Methods of making and using the abrasive articles are included.
    Type: Application
    Filed: March 20, 2007
    Publication date: September 25, 2008
    Inventors: Edward J. Woo, Thomas W. Rambosek, Seyed A. Angadjivand, Mary B. Donovan, Rufus C. Sanders, Yeun-Jong Chou
  • Publication number: 20080216413
    Abstract: Abrasive articles, and methods of making abrasive articles that include a supersize coating or component, such as one configured to inhibit the collection of dust and/or swarf on the abrasive coating. The supersize component can be applied to the abrasive coating after converting the abrasive article with a laser or other conversion mechanism, whether non-contact or mechanical contact. In some embodiments, no fresh or exposed abrasive or backing surfaces exist; that is, the supersize component covers all surfaces.
    Type: Application
    Filed: July 23, 2007
    Publication date: September 11, 2008
    Inventors: Edward J. Woo, Ehrich J. Braunschweig, Charles J. Studiner
  • Publication number: 20080216414
    Abstract: Abrasive articles, and methods of making abrasive articles by using a laser to convert (e.g., cut) at least a portion of the abrasive coating to form the abrasive article. The method includes laser propagation impinging on the abrasive back side (opposite the abrasive coating) and progressing through to the abrasive side. Such a process inhibits ridging effects around cut regions (e.g., openings) on the front side.
    Type: Application
    Filed: July 23, 2007
    Publication date: September 11, 2008
    Inventors: Ehrich J. Braunschweig, Rufus C. Sanders, Charles J. Studiner, Edward J. Woo
  • Patent number: 7410413
    Abstract: A structured abrasive article comprises a backing, a structured abrasive layer affixed to the backing, the structured abrasive layer comprising: a plurality of raised abrasive regions, each raised abrasive region consisting essentially of a close-packed plurality of pyramidal abrasive composites; and a network consisting essentially of close-packed truncated pyramidal abrasive composites, wherein the network continuously abuts and separates the raised abrasive regions from one another. The height of the pyramidal abrasive composites is greater than the height of the truncated pyramidal abrasive composites. Methods of making and using the same are also disclosed.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: August 12, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Edward J. Woo, Craig F. Lamphere, Gregory A. Koehnle
  • Publication number: 20080153407
    Abstract: An abrasive article with an integral dust collection system. The abrasive article comprises a porous abrasive layer with openings, a first filter media with channels, a second filter media, a third filter media with channels, a fourth filter media, and an optional attachment layer. The openings of the porous abrasive layer cooperate with the channels to allow the flow of particles from the abrasive surface to the filter media.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 26, 2008
    Inventors: Thomas W. Rambosek, Edward J. Woo, Curtis J. Schmidt
  • Patent number: 7390244
    Abstract: An abrasive article mounting assembly with an integral dust collection system. The abrasive attachment interface is configured to releasably engage and support an abrasive article, such as, for example, a porous abrasive sheet or disc.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: June 24, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Edward J. Woo, Thomas W. Rambosek, Rufus C. Sanders, Jr., Ehrich J. Braunschweig, Seyed A. Angadjivand, Suresh Kalatoor, Curtis J. Schmidt, Charles R. Wald, Donna W. Bange
  • Patent number: 7329175
    Abstract: A porous abrasive article that allows air and dust particles to pass through. The abrasive article has a screen abrasive and a porous attachment interface. The screen abrasive has an abrasive layer comprising a plurality of erectly oriented abrasive particles and at least one binder. The porous attachment interface cooperates with the screen abrasive to allow the flow of particles through the abrasive article.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: February 12, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Edward J. Woo, Thomas W. Rambosek, Curtis J. Schmidt
  • Patent number: 7278904
    Abstract: A method of abrading a surface of a workpiece with a structured abrasive article in the presence of a liquid comprising water and at least one of a sulfonate or sulfate anionic surfactant.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: October 9, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Edward J. Woo, Donna W. Bange, Craig F. Lamphere
  • Patent number: 7258705
    Abstract: A porous abrasive article that allows air and dust particles to pass through. The abrasive article has a screen abrasive and a polymer netting with hooks. The screen abrasive has an abrasive layer comprising a plurality of abrasive particles and at least one binder. The polymer netting cooperates with the screen abrasive to allow the flow of particles through the abrasive article.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: August 21, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Edward J. Woo, Charles R. Wald, Curtis J. Schmidt
  • Patent number: 7252694
    Abstract: A porous abrasive article that allows air and dust particles to pass through. The abrasive article has a screen abrasive and an apertured attachment interface with hooks. The screen abrasive has an abrasive layer comprising a plurality of abrasive particles and at least one binder. The apertured attachment interface cooperates with the screen abrasive to allow the flow of particles through the abrasive article.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: August 7, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Edward J. Woo, Charles R. Wald, Curtis J. Schmidt
  • Patent number: 7244170
    Abstract: An abrasive article with an integral dust collection system. The abrasive article comprises a porous abrasive layer with openings, a first filter media with channels, a second filter media, and an attachment interface layer. The openings of the porous abrasive layer cooperate with the channels to allow the flow of particles from the abrasive surface to the second filter media.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: July 17, 2007
    Assignee: 3M Innovative Properties Co.
    Inventors: Edward J. Woo, Thomas W. Rambosek, Rufus C. Sanders, Jr., Ehrich J. Braunschweig, Seyed A. Angadjivand, Suresh Kalatoor, Curtis J. Schmidt, Charles R. Wald, Donna W. Bange
  • Patent number: 6846232
    Abstract: The invention provides a backing for an abrasive article comprising a sheet-like polymeric substrate having a first major surface including a pattern of non-abrasive raised areas and depressed areas and an opposite second major surface including a plurality of shaped engaging elements that are one part of a two-part mechanical engagement system. An abrasive product is provided by coating at least the raised areas of the backing with an abrasive coating.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: January 25, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Ehrich J. Braunschweig, Daidre L. Syverson, Edward J. Woo, Michael J. Annen
  • Patent number: 6773474
    Abstract: Coated abrasive articles comprise a backing and an abrasive layer, and optionally at least one of a backsize layer, tie layer, supersize layer, presize layer, or saturant. The coated abrasive article comprises a reaction product of components comprising: polyfunctional acrylate; polyfunctional cationically polymerizable material; free radical photoinitiator; triarylsulfonium salt having the formula wherein R1, R2 and R3 independently represent an, optionally substituted, aromatic group having from about 4 to about 20 carbon atoms, and Y− represents a non-interfering anion; and quaternary ammonium salt having the formula wherein X− is a non-interfering anion.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: August 10, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Gregory A. Koehnle, Edward J. Woo
  • Patent number: 6758734
    Abstract: Coated abrasive articles comprise a backing and an abrasive layer, wherein at the abrasive layer comprises a reaction product of components comprising polyfunctional acrylate, alicyclic polyepoxide, and aromatic polyepoxide having an average epoxy functionality of at least 2.5.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: July 6, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Ehrich J. Braunschweig, Daidre L. Syverson, Edward J. Woo
  • Patent number: 6722952
    Abstract: An abrasive article is provided which comprises a backing and at least one three-dimensional abrasive coating bonded to a surface of the backing. The abrasive coating comprises a binder formed from a cured binder precursor having dispersed therein a plurality of diamond bead abrasive particles and a filler which comprises from about 40 to about 60 percent weight of the abrasive coating. The abrasive article is particularly suitable for abrading a glass or a glass ceramic workpiece in the presence of a lubricant.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: April 20, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Brian D. Goers, Scott W. Peterson, Edward J. Woo
  • Patent number: D536714
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: February 13, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Ehrich J. Braunschweig, Edward J. Woo, Charles J. Studiner, IV
  • Patent number: D538312
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: March 13, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Ehrich J. Braunschweig, Edward J. Woo, Charles J. Studiner, IV
  • Patent number: D538313
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: March 13, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Ehrich J. Braunschweig, Edward J. Woo, Charles J. Studiner, IV