Patents by Inventor John Pierre

John Pierre 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 attaching solderballs by selectively oxidizing traces
    Patent number: 6431432
    Abstract: A solder mask is placed on a substrate but this solder mask is used to control solder spread but merely helps to protect traces that are distant from the bond pads. The solder mask has an opening that is preferably greater than the area of a die to be attached; this opening exposes both the bond pads and at least portions of traces proximate to the bond pads. The portions of the traces that are proximate to the bond pads are oxidized, thereby preventing solder from flowing onto these portions of the traces during the solder reflow process.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: August 13, 2002
    Assignee: LSI Logic Corporation
    Inventors: John Pierre McCormick, Kishor V. Desai
  • Dental floss
    Patent number: 6270890
    Abstract: The floss is made of a plurality of polytetrafluoroethylene filaments and non-polytetrafluoroethylene filaments. The polytetrafluoroethylene filaments provide for a lubricity for the floss to enter more spaces and the non-polytetrafluoroethylene filaments provide for a case in gripping. In the way a range of polytetrafluoroethylene filaments can be used in the construction of a dental floss.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: August 7, 2001
    Assignee: Colgate-Palmolive Company
    Inventors: John Pierre Curtis, Michael Joseph McGreal