Patents Assigned to Scientific Generics Ltd.
  • Publication number: 20080231290
    Abstract: A capacitive position sensor has a periodic array of electrodes which form capacitors between pairs of the electrodes. The location of a dielectric inhomogeneity in the vicinity of the sensor is determined by comparison of the relative change in the capacitance of the capacitors. The comparison may be carried out using a capacitive Wheatstone Bridge arrangement. The sensor configuration has the advantage that it is independent of the absolute value of the dielectric constant of the environment in which the sensor is located.
    Type: Application
    Filed: May 16, 2005
    Publication date: September 25, 2008
    Inventor: Victor Evgenievich Zhitomirsky
  • Patent number: 6838873
    Abstract: A Position Sensor comprises: one or more excitation windings; a signal generator adapted to apply excitation signals to the or each excitation winding; tag means displaceable relative to said excitation windings; one or more sensor windings electromagnetically coupled to said excitation windings such that in response to said excitation signals being applied to said excitation windings, there is generated sensed signal in the or each sensor winding; and a signal processor adapted to process said sensed signals to determine the position of said tag means in any location in the X, Y and Z planes essentially in accordance with phase values or in accordance with phase values and amplitude values.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: January 4, 2005
    Assignee: Scientific Generics Ltd.
    Inventors: David Alun James, Darran Kreit, Ross Peter Jones, David John Stocks
  • Patent number: 5814450
    Abstract: A process is described for denaturing native double-stranded nucleic acid material into its individual strands in an electrochemical cell. The process is an electrical treatment of the nucleic acid with a voltage applied to the nucleic acid material by an electrode. The process employs a promoter which is an inorganic multivalent cation such as a magnesium ion to speed denaturation. The process may be used in the detection of nucleic acid by hybridizing with a labelled probe or in the amplification of DNA by a polymerase chain reaction or ligase chain reaction.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: September 29, 1998
    Assignee: Scientific Generics Ltd.
    Inventors: Christopher J. Stanley, Patricia L. Archer
  • Patent number: 4917486
    Abstract: The invention provides a photocoagulator using an infrared laser diode source (70). A dichroic beam splitter (68) is used to combine the optical path of the laser system with the viewing system. Such an arrangement affords the clinician an uninterupted, uncolor view of the patient's eye during treatment, without any risk of damage to the clinician's eye. There is also provided an alignment system using a visible laser diode (80). The alignment system may include a number of mutually non parallel beams which pass through different portions of the pupil and provide information on aim, focus and vignetting.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: April 17, 1990
    Assignee: Scientific Generics Ltd.
    Inventors: Anthony Raven, John Marshall
  • Patent number: D524400
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: July 4, 2006
    Assignee: Scientific Generics Ltd.
    Inventor: Jocelin Langford