Patents by Inventor David D. Nguyen

David D. Nguyen 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).

  • Method for providing a clear surface finish on glass
    Patent number: 6110015
    Abstract: A method for polishing a glass workpiece is provided that includes contacting the glass workpiece having an initial Ra with an abrasive article comprising a three-dimensional abrasive coating bonded to a backing, applying a liquid at an interface between the glass workpiece and the abrasive article; moving the glass workpiece and the abrasive article relative to one another; and reducing the initial Ra to a final Ra. The abrasive articles are capable of rapid removal of glass stock from a glass test blank and reducing the surface finish using an RPP test procedure.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: August 29, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Todd J. Christianson, Robert G. Visser, David D. Nguyen
  • Abrasive article for providing a clear surface finish on glass
    Patent number: 5910471
    Abstract: An abrasive article is provided which comprises a backing; and at least one three-dimensional abrasive coating comprising diamond particles dispersed within a binder bonded to a surface of the backing, the binder comprising a cured binder precursor including a urethane acrylate oligomer. The abrasive article is capable of rapid glass stock removal coupled with reducing the surface finish as indicated by reduced Ra values using an RPP test procedure.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: June 8, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Todd J. Christianson, David D. Nguyen, Robert G. Visser
  • Method for providing a clear surface finish on glass
    Patent number: 5888119
    Abstract: A method for polishing a glass workpiece is provided that includes contacting the glass workpiece having an initial Ra with an abrasive article comprising a three-dimensional abrasive coating bonded to a backing, applying a liquid at an interface between the glass workpiece and the abrasive article; moving the glass workpiece and the abrasive article relative to one another; and reducing the initial Ra to a final Ra. The abrasive articles are capable of rapid removal of glass stock from a glass test blank and reducing the surface finish using an RPP test procedure.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: March 30, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Todd J. Christianson, David D. Nguyen, Robert G. Visser
  • Support system and method for jacketed multiple cryogenic pipes for cyrogenic fluid transfer
    Patent number: 5570723
    Abstract: An assembly and method for supporting a plurality of individually insulated pipes or conduits inside a vacuum jacket where the insulated pipes are positioned or fixed relative to one another and the inside surface of the vacuum jacket.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: November 5, 1996
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kwang-Fu P. Hwang, Alexander P. Varghese, David D. Nguyen, Thomas Joseph