Patents by Inventor Roger William Clarke

Roger William Clarke 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: 20040060557
    Abstract: An inhaler for dispensing medicament in the form of a dry powder is powder is provided with an airway (50) through which a dose travels from an ejection zone to an outlet of the airway. The airway (50) has an inlet means which is so arranged as to create a jacket of air, flowing through a part of the airway extending from the ejection zone to the outlet. The jacket of air surrounds said dose and thereby prevents it form impinging on the airway walls. This reduces accumulation of material on the airway wails, and thus improves the consistency of performance of the inhaler. Preferable, the inlet means includes a throat for producing a stream of fast flowing air which creates a zone of low pressure in front of the ejection zone, thereby to facilitate ejection of a dose.
    Type: Application
    Filed: September 22, 2003
    Publication date: April 1, 2004
    Inventors: Michael Edgar Newton, Simon James Smith, Dominic Charles Reber, Roger William Clarke, Peter Alan Evans
  • Publication number: 20030026556
    Abstract: Concepts for conveniently arranging devices for the transduction of signals to and from voltage and current domains to infrared radiation domains is described. Specifically, optoelectronic components and methods of making the same are described. In one aspect, the optoelectronic component includes a base substrate having a pair of angled (or substantially perpendicular) faces with electrical traces extending therebetween. A semiconductor chip assembly is mounted on the first face of the base substrate and a photonic device is mounted on the second face. Both the semiconductor chip assembly and the photonic device are electrically connected to traces on the base substrate. The semiconductor chip assembly is generally arranged to be electrically connected to external devices. The photonic devices are generally arranged to optically communicate with one or more optical fibers. The described structure may be used with a wide variety of photonic devices.
    Type: Application
    Filed: June 6, 2002
    Publication date: February 6, 2003
    Applicant: National Semiconductor Corporation
    Inventors: William Paul Mazotti, Peter Deane, Luu Thanh Nguyen, Ken Pham, Bruce Carlton Roberts, Jia Liu, Yongseon Koh, John P. Briant, Roger William Clarke, Michael R. Nelson, Christopher J. Smith, Janet E. Townsend
  • Patent number: 6346921
    Abstract: A broadband antenna having closely spaced dipole antenna elements to form a log-periodic array, arranged normal to a signal feed network having a separate feed line for each of the dipole elements. The length of each feed line is selected to compensate for phase delays such that all frequency components of the radiated signal are in phase at a predetermined phase reference point of the antenna.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: February 12, 2002
    Assignee: University of Bradford
    Inventors: Peter Stuart Excell, Roger William Clarke, Adam David Tinniswood
  • Patent number: 5769073
    Abstract: A device for dispensing doses of powdered material comprises a housing which houses a cylindrical container. The container has a number of helically arranged compartments each of which contains a respective dose of powdered material. In order to dispense the material from a compartment, that compartment is moved into registry with an airway in the device by means of an indexing mechanism, and the user sucks on a mouthpiece of the housing, which mouthpiece communicates with an air inlet via the airway. The flow of air through the airway ejects the dose of material. The container can constitute a replaceable cartridge. The device is particularly suitable for use as an inhaler for dispensing powdered medicament.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: June 23, 1998
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Stephen William Eason, Clive Patrick Catterall, Roger William Clarke, Donna Joy Wilson