Turret Patents (Class 451/308)
  • Patent number: 10907074
    Abstract: Chemical mechanical polishing compositions include an abrasive, a first removal rate enhancer; and water; wherein the polishing compositions have a value of less than 800,000 for the relation: large particle counts/weight percent abrasive, when measured using a 0.2 ?m bin size.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: February 2, 2021
    Assignee: FUJIFILM ELECTRONIC MATERIALS U.S.A., INC.
    Inventors: James McDonough, Saul Alvarado
  • Patent number: 7115021
    Abstract: To polish polishing target surfaces of SiO2 insulating films or the like at a high rate without scratching the surface, the present invention provides an abrasive comprising a slurry comprising a medium and dispersed therein at least one of i) cerium oxide particles constituted of at least two crystallites and having crystal grain boundaries or having a bulk density of not higher than 6.5 g/cm3 and ii) abrasive grains having pores. Also provided are a method of polishing a target member and a process for producing a semiconductor device which make use of this abrasive.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: October 3, 2006
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Masato Yoshida, Toranosuke Ashizawa, Hiroki Terazaki, Yuuto Ootuki, Yasushi Kurata, Jun Matsuzawa, Kiyohito Tanno
  • Patent number: 7090560
    Abstract: Systems and methods control abrading operations of an abrading machine by sensing characteristics of an abrading article installed on the abrading machine. When a problem is discovered by sensing the article, appropriate actions may be taken. As one example, the abrading article may be sensed to determine whether the abrading article has been installed with an abrasive side facing the wrong direction. An alert allows an operator to reinstall the article. As another example, the abrading article may be sensed to determine whether splicing tape is present to hold two pieces of abrading tape together. The article may be advanced until the splicing tape is beyond an abrading zone. As another example, the abrading article may be sensed to determine whether the abrading article has stopped moving while the article drive is advancing because the article has broken. An alert allows an operator to repair the break.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: August 15, 2006
    Assignee: 3M Innovative Properties Company
    Inventor: Daniel A. Billig
  • Patent number: 6743085
    Abstract: A holder for an abrasive disc allows for a quick manual change of the abrasive disc. The holder including an uncoupling mechanism that in turn includes a handle comprising a pin and an adjacent hub comprising a partial annular channel. The handle and hub have a limited rotational engagement wherein the pin travels in the channel. When an operator desires to replace an abrasive disc, the operator grasps the handle with one hand and rotates the disc, face plate, and hub, together as a unit, with the other hand. This counter-rotation breaks the tight attachment of the disc on the shaft of the finishing tool, so that disc can be easily unthreaded from the shaft.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: June 1, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Peter J. Fritz, Robert G. Saunier, Aleck Block
  • Patent number: 6652363
    Abstract: A method and apparatus for planarizing a microelectronic substrate. The apparatus can include a planarizing medium having a relatively hard polishing pad and a planarizing liquid disposed on a generally non-porous planarizing surface of the polishing pad. The planarizing liquid can include a colloidal suspension of colloidal particles having generally smooth external surfaces. The colloidal particles can have a variety of shapes, including a spherical shape, a cylindrical shape, a cubic shape, and a hexagonal shape, among others. The colloidal particles can be formed from a variety of materials, including silicon dioxide, manganese oxide, and cerium oxide.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: November 25, 2003
    Assignee: Micron Technology, Inc.
    Inventors: Stephen J. Kramer, Scott Meikle
  • Publication number: 20030064671
    Abstract: The invention relates to a novel CMP slurry composition used for polishing metals, the composition comprising: (a) a dispersion solution comprising an abrasive; and (b) an oxidizer. The slurry composition has a large particle count of less than about 150,000 particles having a particle size greater than 0.5 &mgr;m in 30 &mgr;L of slurry, which is achieved by filtering the slurry composition prior to use. Also, the inclusion of a chemical activity enhancer, such as, an amine and a corrosion inhibitor, results in the appropriate copper removal rate without increasing static etch rates.
    Type: Application
    Filed: October 9, 2002
    Publication date: April 3, 2003
    Applicant: Arch Specialty Chemicals, Inc.
    Inventors: Anthony Mark Pasqualoni, Deepak Mahulikar, Larry A. LaFollette, Richard J. Jenkins
  • Patent number: 5749773
    Abstract: A solid buffing compound made up of polishing powder and a bonding agent, wherein the bonding agent to be used is a good amount of water-soluble surface active agent and/or polyalkylene glycol which is an intermediate thereof; the melting point of said bonding agent is 30.degree. C. or more, and said bonding agent is water soluble so that a buff residue adhering on the surface of product, etc. after buffing may be washed out easily by use of water.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: May 12, 1998
    Inventor: Toshikazu Tabata