Patents by Inventor Richard Percival

Richard Percival 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).

  • Publication number: 20210088047
    Abstract: A scroll pump anti-rotation device for resisting relative rotational movement between two scrolls and a scroll pump comprising such a device is disclosed. The anti-rotation device comprises: an elongate member forming an inner ring; an elongate member forming an outer ring surrounding the inner ring; a plurality of connecting members extending between adjacent elongate members; and at least one fixing point for fixing the outer ring to the scroll pump in a fixed relation to one of the scrolls and at least one further fixing point for fixing the inner ring to the scroll pump in a fixed relation to the other of the scrolls.
    Type: Application
    Filed: December 19, 2018
    Publication date: March 25, 2021
    Inventors: Richard Percival-Alwyn, Matthew Paul Reynolds
  • Publication number: 20080109309
    Abstract: Compact powered systems are provided that include a substrate, a thin battery, an activation element, and an output device in electrical communication. The compact powered systems may be dynamic, powered print advertisements, product packaging, trading cards, printed ephemera or printed media that activate when subjected to an outside influence or stimulus. The output device is configured to, for example, display a number, graphic, or message, emit sound, cause movement or vibration, or transmit wireless signals in response to the stimulus.
    Type: Application
    Filed: October 31, 2007
    Publication date: May 8, 2008
    Inventors: Steven Landau, Richard Percival
  • Patent number: 6502693
    Abstract: A cover on an open-topped container of food and/or drink either attached to the open top of the container by a first adhesive means forming a receptacle that can be slipped over the container. The cover has second adhesive means thereon so that, when the cover has been entirely or partially removed from the container to open the cover, it will remain attached to, or be attachable to, the container by the second adhesive means and can hang down, as a receptacle, from one side of the container, for receiving waste material.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: January 7, 2003
    Inventor: David Richard Percival
  • Patent number: 4691434
    Abstract: In the manufacture of semi-custom integrated circuits silicon wafers with P and N or N and P structures are used, and interconnections to establish a specific application must be created. Unlike currently known technologies, electrically conductive film with standardized openings made according to a pre-arranged raster must be deposited on the silicon wafer. Subsequently the conductive film, will be removed from between the openings directly or indirectly by means of electromagnetic radiation in order to produce the required circuit configuration. A laser beam is particularly appropriate for this since it can be positioned and controlled, and can be used directly for the exposure of a photosensitive film. The creation of insular conductive film is then achieved through a photo- etch technique. By use of this process, an expensive customer specific photo mask can be avoided.
    Type: Grant
    Filed: February 4, 1983
    Date of Patent: September 8, 1987
    Assignee: Lasarray Holding AG
    Inventors: Richard Percival, Ernst Uhlmann
  • Patent number: 4689657
    Abstract: During the manufacture of semi-custom monolithic integrated circuits or semiconductor devices silicon wafers with P-type or N-type impurity regions are used and interconnections must be produced for specific applications. Unlike currently known technologies, an electrically conductive film containing standardized openings in a pre-arranged raster is deposited on the silicon wafer. Subsequently, the conductive film is removed between preselected openings directly or indirectly by means of electromagnetic radiation in order to produce the required circuit configuration. A laser beam is particularly appropriate therefor because such beam can be positioned and controlled and can be used directly for the exposure of a photosensitive film. The production of isolated conductive areas in the conductive film is then accomplished by photo-etching. The use of an expensive customer specific photomask can thus be avoided.
    Type: Grant
    Filed: July 11, 1985
    Date of Patent: August 25, 1987
    Assignee: Lasarray Holding AG
    Inventors: Richard Percival, Ernst Uhlmann