Patents Assigned to Saint-Gobain Abrasifs
  • Coated abrasive aggregates and products containg same
    Patent number: 8888878
    Abstract: A coated abrasive product includes a particulate material containing green, unfired abrasive aggregates having a generally spheroidal or toroidal shape, the aggregates formed from a composition comprising abrasive grit particles, a nanoparticle binder, a dual function material, and a cross-linking agent. These green unfired abrasive aggregates can also be used in free abrasive products and bonded abrasive products.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: November 18, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Jianna Wang, James J. Manning, Paul S. Goldsmith, Anthony C. Gaeta
  • Abrasive slicing tool for electronics industry
    Patent number: 8882868
    Abstract: A bond matrix for metal bonded abrasive tools includes a metal bond system, porosity and an optional filler. Tools according to embodiments of the invention exhibit long tool life, produce an acceptable quality of cut and can have self-dressing properties. The bond matrix can be used, for example, in abrasives tools configured for the electronics industry, such as 1A8 wheels for slicing ball grid arrays (BGAs) and other such slicing operations.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: November 11, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Parul Walia, Srinivasan Ramanath, Richard W. Hall
  • Abrasive article with adhesion promoting layer
    Patent number: 8883288
    Abstract: An abrasive article includes a backing having a major surface, an adhesion promoting layer overlying the major surface of the backing, and a make layer directly contacting the adhesion promoting layer. The adhesion promoting layer has a thickness of at least about 10 microns and is formed of a polar thermoplastic material, a cross-linkable polymer, or blends thereof.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: November 11, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Anthony C. Gaeta, Paul S. Goldsmith, Kamran Khatami, Pranjal Shah
  • GRINDING AND POLISHING TOOL
    Publication number: 20140323020
    Abstract: A grinding tool includes a shank having an axis, and at least two abrasive portions mounted directly to and in contact with the shank without a hub therebetween. Each of the abrasive portions has a substantially identical profile formed therein.
    Type: Application
    Filed: April 22, 2014
    Publication date: October 30, 2014
    Applicants: SAINT-GOBAIN ABRASIVES, INC., SAINT-GOBAIN ABRASIFS
    Inventors: Rajesh KAUL, John TUNSTALL, Shivshankar SIVASUBRAMANIAN, Srinivasan RAMANATH, Rachana UPADHYAY, Arup K. KHAUND, Yinggang TIAN, John PEARLMAN, Michael D. CHENG, Cecile O. MEJEAN
  • Anti-loading abrasive article
    Patent number: 8871331
    Abstract: A coated abrasive article includes a backing having a surface, a plurality of abrasive regions overlying the surface in each of the first and second portions, and at least one macro-channel. The surface of the backing has a shape defined by an outer contour. A bisecting axis divides the shape into first and second portions. Each abrasive region includes a binder and a plurality of abrasive grains in contact with the binder. The abrasive grains have an average grain size of not greater than about 200 microns. The at least one macro-channel defines a passageway extending between a pair of adjacent abrasive regions and terminating at openings at the outer contour within each of the first and second portions. The macro-channel has an average channel width of between about 0.1 millimeters to about 5 millimeters and is substantially free of the binder and the abrasive grains.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: October 28, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventor: Anuj Seth
  • Bonded abrasive body and method of forming same
    Patent number: 8870986
    Abstract: An abrasive article including a bonded abrasive body having abrasive particles contained within a bond material, the bond material including a vitreous material formed from a mixture having aluminum oxide (Al2O3), bismuth oxide (Bi2O3), and boron oxide (B2O3), and wherein the mixture includes an amount (wt %) of aluminum oxide less than an amount (wt %) of bismuth oxide and the amount (wt %) of aluminum oxide is less than an amount (wt %) of boron oxide.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: October 28, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Sophie Papin, Cécile Jousseaume, Nilanjan Sarangi, Sandhya Jayaraman Rukmani
  • Abrasive particle and method of forming same
    Patent number: 8870985
    Abstract: An abrasive article comprising an abrasive particle including a core comprising a compressible material, an intermediate layer comprising a binder material overlying an exterior surface of the core, and an outer layer comprising abrasive grains overlying the intermediate layer.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: October 28, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Jianna Wang, Guan Wang, Charles G. Herbert
  • Aqueous resin composition for abrasive articles and resulting articles
    Patent number: 8858664
    Abstract: An aqueous polymer binder composition adapted for the manufacture of abrasive articles, such as coated abrasive articles, comprising at least one resin containing at least two azetidinium groups and at least one saccharide. The aqueous composition is formaldehyde-free and can further comprise proteins, starch grafted acrylic styrene, co-cross-linking agents, rheology modifiers, fillers, and hydrophobizing agents.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: October 14, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Clément Houga, Alix Arnaud, Charles G. Herbert
  • BONDED ABRASIVE ARTICLE AND METHOD OF GRINDING
    Publication number: 20140298729
    Abstract: An abrasive article configured to grind a workpiece having a fracture toughness of at least about 5.5 MPa·m0.5 may include a body comprising abrasive particles contained within a bond material comprising a metal, wherein the body comprises a ratio of VAG/VBM of at least about 1.3, wherein VAG is a volume percent of abrasive particles within a total volume of the body and VBM is a volume percent of bond material within the total volume of the body, and wherein the abrasive particles have an average particle size of at least about 1 micron and not greater than about 20 microns.
    Type: Application
    Filed: March 31, 2014
    Publication date: October 9, 2014
    Applicants: SAINT-GOBAIN ABRASIFS, SAINT-GOBAIN ABRASIVES, INC.
    Inventors: Srinivasan RAMANATH, William H. LANE, Rachana UPADHYAY, Michael P. HITCHINER
  • Slot wear indicator for a grinding tool
    Patent number: 8851058
    Abstract: Wear indicators for abrasive articles are presented. Specifically, indicator marks that are parallel to a bonding edge of a grinding element are presented. Tools comprising a carrier element and one or more grinding elements comprising one or more indicators are also presented.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: October 7, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Marc Linh Hoang, Rodolphe Martin
  • Articles including surface microfeatures and methods for forming same
    Patent number: 8852694
    Abstract: A method of forming a polymer film includes dispensing a substrate and coating the substrate with a composition that is curable using actinic radiation. In an example, the method further includes exposing the composition to actinic radiation in presence of an atmosphere including 1 vol % to 37 vol % oxygen, whereby the surface of the composition forms an undulating morphology. In another example, the method further includes applying an oxygen-containing overlay over the composition, exposing the composition to actinic radiation through the oxygen-containing overlay, and removing the oxygen-containing overlay, whereby the surface of the composition forms an undulating morphology.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: October 7, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs, University of Massachusettes
    Inventors: Alfred J. Crosby, Dinesh Chandra, Anuj Seth, Michael A. Zimmerman
  • Abrasive Particles having Particular Shapes and Methods of Forming such Particles
    Publication number: 20140290147
    Abstract: A coated abrasive article comprising a backing, an adhesive layer disposed in a discontinuous distribution on at least a portion of the backing, wherein the discontinuous distribution comprises a plurality of adhesive contact regions having at least one of a lateral spacing or a longitudinal spacing between each of the adhesive contact regions; and at least one abrasive particle disposed on each adhesive contact region, the abrasive particle having a tip, and there being at least one of a lateral spacing or a longitudinal spacing between each of the abrasive particles, and wherein at least 65% of the at least one of a lateral spacing and a longitudinal spacing between the tips of the abrasive particles is within 2.5 standard deviations of the mean.
    Type: Application
    Filed: March 31, 2014
    Publication date: October 2, 2014
    Applicants: Saint-Gobain Abrasifs
    Inventors: Anuj Seth, Darrell K. Everts, Vivek Cheruvari Kottieth Raman
  • Abrasive article and method of making
    Patent number: 8814967
    Abstract: An abrasive article includes a bonded abrasive having a body made of abrasive grains contained within a composite bond material. The composite bond material can include an organic material and a metal material. The body can also include a filler material made of a superabrasive material. In an embodiment, the filler material can have an average particle size at least about 10 times less than an average particle size of the abrasive grains.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: August 26, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Rachana Upadhyay, Srinivasan Ramanath
  • Abrasive tool having controlled porosity distribution
    Patent number: 8808413
    Abstract: An abrasive tool having a body including an abrasive portion having abrasive grains contained within a matrix material and porosity characterized by a bimodal distribution of pores including large pores having an average large pore size (Pl) and small pores having an average small pore size (Ps), wherein Pl>Ps. The body of the abrasive tool further includes a first reinforcing member contained within the abrasive portion, and a percent thermal expansion over a temperature range for 25° C. to 450° C. of not greater than about 0.7%.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: August 19, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Emmanuel C. Francois, Konstantin S. Zuyev, Muthu Jeevanantham, Anne M. Bonner, Michael W. Klett, Dean S. Matsumoto
  • Microfiber reinforcement for abrasive tools
    Patent number: 8808412
    Abstract: A composition that can be used for abrasive processing is disclosed. The composition includes an organic bond material, an abrasive material dispersed in the organic bond material, and a plurality of microfibers uniformly dispersed in the organic bond material. The microfibers are individual filaments having an average length of less than about 1000 ?m. Abrasive articles made with the composition exhibit improved strength and impact resistance relative to non-reinforced abrasive tools, and improved wheel wear rate and G-ratio relative to conventional reinforced tools. Active fillers that interact with microfibers may be used to further abrasive process benefits.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: August 19, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Michael W. Klett, Karen Conley, Steven F. Parsons, Han Zhang, Arup K. Khaund
  • High-performance resin for abrasive products
    Patent number: 8802791
    Abstract: An abrasive product includes a plurality of abrasive particles and a resin cured with a polythiol group. A method of preparing the abrasive product includes contacting the plurality of abrasive particles with a curable composition that includes a resin and a polythiol group, and curing the curable composition to produce the abrasive product. A method of abrading a work surface includes applying an abrasive product to a work surface in an abrading motion to remove a portion of the work surface. A curable composition includes a formaldehyde resin and a polythiol group. A formaldehyde resin is crosslinked by a polythiol group. A method of crosslinking the formaldehyde resin includes reacting the polythiol group with the formaldehyde resin.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: August 12, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Anthony C. Gaeta, William C. Rice
  • Chemical mechanical planarization pad conditioner and method of forming
    Patent number: 8795035
    Abstract: A CMP pad conditioner including a substrate having a transparency window represented by an average internal transmittance of not less than about 90% over a wavelength range extending from about 400 nm to about 500 nm along a path length extending through the substrate of not less than about 10 mm a bonding layer overlying a surface of the substrate, and abrasive grains contained within the bonding layer.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: August 5, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Jianhui Wu, Gilles Querel, Eric Schulz, Richard W. J. Hall
  • Abrasive article having abrasive segments with shaped gullet walls
    Patent number: D717841
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: November 18, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventor: Marc Linh Hoang
  • Abrasive article having abrasive segments with shaped gullet walls
    Patent number: D717842
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: November 18, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventor: Marc Linh Hoang
  • Abrasive article having vibration reducing gullets
    Patent number: D717843
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: November 18, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventor: Marc Linh Hoang