Patents by Inventor John Fifield

John Fifield 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 AND CIRCUIT FOR PRECISE TIMING OF SIGNALS IN AN EMBEDDED DRAM ARRAY
    Publication number: 20050007866
    Abstract: A method and circuit for timing the start of a precharge period in an eDRAM. The circuit including: a delayed lock loop circuit for receiving a clock signal and generating a control signal for adjusting an internal delay of the clock signal; and means for generating a delayed clock signal in response to the control signal. The means for generating the delayed clock signal is a multiple stage delay circuit, each stage of the multiple delay stage circuit connected in series and each stage individually responsive to the control signal.
    Type: Application
    Filed: June 30, 2003
    Publication date: January 13, 2005
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Darren Anand, John Fifield, Harold Pilo
  • Interlocking roof tiles
    Publication number: 20030115819
    Abstract: An extruded concrete interlocking roof tile has upper and under surfaces, upper and lower edges, two opposite side edges, with the upper surface having a recess extending transversely between the two opposite side edges adjacent the upper edge for receiving a lower edge region of an adjacent tile in overlapping relationship, and in that integral spacer means acts between the recess floor and the undersurface of the adjacent tile.
    Type: Application
    Filed: November 21, 2002
    Publication date: June 26, 2003
    Inventor: John Fifield
  • Paving block
    Patent number: D442703
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: May 22, 2001
    Assignee: CRH Oldcastle Inc.
    Inventor: John Fifield
  • Roof tile
    Patent number: D478179
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: August 5, 2003
    Assignee: Westile, Inc.
    Inventor: John Fifield