Patents by Inventor Philip Woodhead

Philip Woodhead 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).

  • Patent number: 7166563
    Abstract: The present invention relates to a biocidal cleaning composition comprising a biocide, a surfactant of formula R—O—(G)n, and an amphoteric surfactant; wherein R is an alkyl group; G is a saccharide residue; and n is a number from 0–4 to 10.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: January 23, 2007
    Assignee: Selden Research Ltd.
    Inventor: Peter Philip Woodhead
  • Publication number: 20040248760
    Abstract: The present invention relates to a biocidal cleaning composition comprising a biocide, a surfactant of formula R—O-(G)n, and an amphoteric surfactant; wherein R is an alkyl group; G is a saccharide residue; and n is a number from 0-4 to 10.
    Type: Application
    Filed: February 18, 2004
    Publication date: December 9, 2004
    Inventor: Peter Philip Woodhead
  • Patent number: 4663770
    Abstract: Counter circuit apparatus which sequentially re-allocates lower-order counting operation in order to extend counter life. The counter is comprised of a plurality of lower order counters and at least one higher order counter. A count selection circuit is coupled to the plurality of counters which controls the counting thereof in response to applied event input signals. A map control circuit is coupled between the higher order counter and the count selection circuit which controls the count selection circuit in response to signals derived from the higher order counter. The map control circuit sequentially enables a predetermined one of the lower order counters to count individual ones of the applied event input signals. A count unscrambling circuit is coupled to the plurality of lower order counters and the map control circuit which produces an ordered count output signal that is indicative of the number of event input signals counted by the counter.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: May 5, 1987
    Assignee: Hughes Microlectronics Limited
    Inventors: Kenelm G. D. Murray, Philip Woodhead