Patents Assigned to Saint-Gobain Abrasifs
  • Abrasive articles and methods of forming
    Patent number: 9044841
    Abstract: A method of forming an abrasive article includes directing a beam of electromagnetic radiation at a starting location on an abrasive preform comprising a bonding layer and abrasive grains within the bonding layer, and increasing the power of the beam of electromagnetic radiation to a scanning power while directed at the starting location. The method further includes changing the position of the beam relative to the abrasive preform from the starting location to a second location on the abrasive preform.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: June 2, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Yinggang Tian, Krishnamoorthy Subramanian
  • Abrasive articles including abrasive particles bonded to an elongated body, and methods of forming thereof
    Patent number: 9028948
    Abstract: An abrasive article includes an elongated body, a bonding layer including a metal overlying a surface of the elongated body, and a coating layer including a polymer material overlying the boding layer. The abrasive article further includes abrasive grains contained within the bonding layer and coating layer, and wherein the bonding layer comprises an average thickness (tbl) at least about 40% of the average grit size of the abrasive grains.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: May 12, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Yinggang Tian, Ran Ding, Susanne Liebelt, Krishnamoorthy Subramanian
  • Abrasive article for shaping of industrial materials
    Patent number: 9028303
    Abstract: An abrasive article including a base having an annular shape defining a central opening; and a mounting assembly coupled to the base, wherein a portion of the mounting assembly is under a compressive force, and a grinding segment coupled to the mounting member.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: May 12, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Ignazio Gosamo, Sebastien Marcel Robert Douveneau, André R. G. Heyen, Emmanuel Thil
  • High-performance resin for abrasive products
    Patent number: 9023955
    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: July 11, 2014
    Date of Patent: May 5, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Anthony C. Gaeta, William C. Rice
  • Abrasive tool for use as a chemical mechanical planarization pad conditioner
    Patent number: 9022840
    Abstract: An abrasive tool including a CMP pad conditioner having a substrate including a first major surface, a second major surface opposite the first major surface, and a side surface extending between the first major surface and the second major, wherein a first layer of abrasive grains is attached to the first major surface and a second layer of abrasive grains is attached to the second major surface. The conditioner further includes a first sealing member extending in a peripheral direction along a portion of the side surface of the substrate.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: May 5, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Charles Dinh-Ngoc, Srinivasan Ramanath, Eric M. Schulz, Jianhui Wu, Thomas Puthanangady, Ramanujam Vedantham, Taewook Hwang
  • Bonded abrasive article and method of forming
    Patent number: 8999026
    Abstract: An abrasive article having an abrasive body including abrasive grains contained within a bond material, wherein the abrasive grains comprise microcrystalline alumina, and wherein the bond material includes less than about 1.0 mol % phosphorous oxide (P2O5), and a ratio measured in mol % between a total content of sodium oxide (Na2O) and a total content of potassium oxide (K2O) defined by [K2O/Na2O] having a value greater than about 0.5.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: April 7, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Gilles Querel, Sandhya Jayaraman Rukmani, Muthu Jeevanantham, Rosemarie Bot-Schulz, Kelley McNeal, Nilanjan Sarangi
  • Paint cup assembly with an extended ring
    Patent number: 8998018
    Abstract: A paint cup assembly for a paint sprayer is disclosed and can include a cap, a paint liner defining a closed proximal end and an open distal end, and a ring configured to fit around the paint liner. The ring can engage the cap and secure the paint liner to the cap. Further, the ring can include an axial extension that can extend toward the proximal end of the paint liner such that the ring can be configured to allow a user to grasp the paint cup assembly without collapsing the paint liner during attachment with a paint sprayer.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: April 7, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Biagio P. Pellegrino, Clemens E. Zoellner, Thomas R. Nixon, Christopher J. Chilton
  • Abrasive article for use in grinding of superabrasive workpieces
    Patent number: 8992645
    Abstract: An abrasive article including a bonded abrasive having a body formed of abrasive grains contained within a bond material, wherein the body grinds a superabrasive workpiece having an average Vickers hardness of at least about 5 GPa at an average specific grinding energy (SGE) of not greater than about 350 J/mm3, at a material removal rate of at least about 8 mm3/sec, and wherein grinding is a centerless grinding operation.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: March 31, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Rachana Upadhyay, Srinivasan Ramanath, Christopher Arcona, John E. Gillespie
  • Imide cross-linked binders for abrasive articles
    Patent number: 8992643
    Abstract: An abrasive article includes a fibrous substrate, a binder disposed on the fibrous substrate, and abrasive grains in contact with the binder. The binder includes an imide cross-linked urethane derived from a blocked isocyanate component and an anhydride component.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: March 31, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventor: Charles G. Herbert
  • High porosity abrasive articles and methods of manufacturing same
    Patent number: 8986407
    Abstract: An abrasive article includes a polymer matrix and abrasive grains dispersed in the polymer matrix, wherein the abrasive article has a void volume of at least 50%. The polymer matrix is polymerized from a monomer including at least one double bond.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: March 24, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Rachana Upadhyay, Richard W. J. Hall
  • Bonded abrasive article and method of forming
    Patent number: 8986410
    Abstract: A method of forming an abrasive article includes providing a green body having abrasive particles including microcrystalline alumina, and heating the green body via microwave radiation to form a bonded abrasive body including the abrasive particles and a bond material comprising a vitreous phase.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: March 24, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Nilanjan Sarangi, Sandhya Jayaraman Rukmani
  • Tool
    Publication number: 20150079887
    Abstract: The present invention discloses an improved tool, which comprises a reinforced member; and a resin layer is coated on the reinforced member, wherein the weight of the resin layer per unit area of the reinforced member may be less than 90 g/m2. The weight of the resin layer may be less than 15% of the total weight of the improved tool. The present invention dramatically reduces the production costs while maintaining the application performance unchanged.
    Type: Application
    Filed: April 24, 2013
    Publication date: March 19, 2015
    Applicant: Saint-Gobain Abrasifs
    Inventors: Dashi Nie, Xiangbin Yu
  • Melamine methylol for abrasive products
    Patent number: 8979957
    Abstract: An abrasive product includes a plurality of abrasive particles and a resin binder cured from a resin composition that includes an aqueous dispersion of melamine methylol having a melamine-to-formaldehyde molar equivalent ratio of between about 1:1 and about 1:3.2, wherein the aqueous dispersion has a pH in a range of between about 8 and about 10. The composition also includes a formaldehyde-based resins, such as a urea-formaldehyde resin or phenol-formaldehyde resin. The melamine methylol comprises between about 1 wt % and about 50 wt % of the combined weight of the formaldehyde-based resin and the melamine methylol.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: March 17, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Abdul Habid Pullichola, Adiseshaiah K. Seshu, Kottotil Mohan Das
  • Coated abrasive aggregates and products containg same
    Patent number: 8974560
    Abstract: Abrasive aggregates and fixed abrasive articles comprising formaldehyde-free polymer binder and a plurality of abrasive grains are provided that are particularly suitable for machining operations, in which abrasion is carried out to remove material and improve surface quality. Certain embodiments combine an abrasive grain, which can be in the form of microparticles, and a formaldehyde-free polymer binder, which can be in the form of a polymer resin and cross-linking agent. Optionally, the abrasive aggregate can contain a secondary cross-linking agent, or a functional filler, such as a grinding aid.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: March 10, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Jianna Wang, Charles G. Herbert
  • Abrasive products and methods for fine polishing of ophthalmic lenses
    Patent number: 8968435
    Abstract: A coated abrasive product including green, unfired abrasive aggregates having a generally spheroidal or toroidal shape, the aggregates formed from a composition comprising abrasive grit particles and a nanoparticle binder, wherein the abrasive aggregates are dispersed within a polymer resin coating, and wherein the coated abrasive product is capable of polishing an optical component, including ophthalmic lenses without the need to apply an abrasive slurry.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: March 3, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: James J. Manning, Mark E. Sternberg, Jianna Wang
  • Abrasive wheels and methods for making and using same
    Patent number: 8961269
    Abstract: Bonded abrasive articles and in particular organic bonded depressed center wheels with one or more reinforcements have reduced stiffness in comparison to conventional counterparts. Techniques for producing and using such wheels are described. In one example, a method for reducing the stiffness of an organically bonded abrasive wheel includes applying to a raised hub region of a reinforced depressed center wheel a force effective to irreversibly decrease the stiffness of said wheel.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: February 24, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Han Zhang, Johannes Hermanus Kuit, Robert Jitze Wilting
  • Noise-reduced abrasive articles
    Patent number: 8956203
    Abstract: Abrasive articles comprising a reduction layer configured to reduce noise level when the abrasive articles are in use.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: February 17, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Han Zhang, Philippe Kerdraon, Marc Rehfeld
  • Chemical mechanical polishing conditioner
    Patent number: 8951099
    Abstract: A chemical mechanical polishing (CMP) conditioner includes a ceramic substrate having a major surface, and an abrasive coating overlying the major surface. The major surface can include micro-protrusions arranged in a curved pattern. Alternatively, the micro-protrusions can be arranged in an irregular pattern.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: February 10, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Jianhui Wu, Richard W. J. Hall, Eric M. Schulz, Srinivasan Ramanath
  • Abrasive article for ultra high material removal rate grinding operations
    Patent number: 8945253
    Abstract: An abrasive article including a bonded abrasive body having a bond material present in an amount of not greater than about 15 vol % for the total volume of the body, abrasive particulate material contained in the bond material, the abrasive particulate material including abrasive agglomerates and unagglomerated abrasive particles, wherein the body comprises an abrasive particulate ratio (APp:APagg) within a range between 3:1 and about 1:3, wherein APp represents the amount (vol %) of unagglomerated abrasive particles present in the body and APagg represents the amount (vol %) of abrasive agglomerates present in the body, and a porosity of at least about 42 vol % of the total volume of the bonded abrasive body.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: February 3, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Nilanjan Sarangi, John Campaniello, James M. Gaffney, Stephen E. Fox, John R. Besse, Stephen Woods, Renaud Fix
  • Paint cup assembly with an outlet valve
    Patent number: 8944351
    Abstract: A paint cup assembly for a paint sprayer is disclosed and can include a paint reservoir, a cap configured to engage the paint reservoir, and a valve assembly disposed within the cap. The cap can include an outlet and the valve assembly can be operable from a closed configuration in which fluid flow through the outlet is prevented to an open configuration in which fluid flow through the outlet is permitted upon engagement with a paint sprayer.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: February 3, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Biagio P Pellegrino, Clemens E. Zoellner, Thomas R. Nixon, Christopher J. Chilton