Patents Assigned to University of Edinburgh
  • Patent number: 5276400
    Abstract: The design and testing of integrated circuits in wafer form for production faults, in the absence of irradiation, is described. This is achieved by fabricating test circuits on each wafer at the periphery of the sensor array. In a preferred arrangement, two test circuits are fabricated on each wafer; one for testing the word lines and the other for testing the bit lines and individual sensing sites. The test circuits are controlled by external signals to input predetermined patterns of data to the array and the array output patterns are compared with the input patterns to assess the level of production faults.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: January 4, 1994
    Assignee: University of Edinburgh
    Inventors: Peter B. Denyer, David Renshaw
  • Patent number: 5259738
    Abstract: A multi-chamber fluid working machine has at least one electromagnetically controlled poppet valve linking each working chamber with respective high and low pressure fluid manifolds whereby displacement control is achieved by real time control of the electrically selectable poppet valves. Each valve seals via annular parts on the valve and its seat and is moved by reaction between a solenoid coil and a ferromagnetic part on the valve stem.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: November 9, 1993
    Assignee: University of Edinburgh
    Inventors: Stephen H. Salter, William H. S. Rampen
  • Patent number: 5190446
    Abstract: Displacement control of a multi-piston fluid pump is achieved by real time control of electrically selectable inlet poppet valves in one or more of the cylinders. Microprocessor control permits desired variable output characteristics to be matched. An electrically actuable poppet valve using an annular permanent magnet to latch to a solenoid is described.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: March 2, 1993
    Assignee: The University Court of the University of Edinburgh
    Inventors: Stephen H. Salter, William H. S. Rampen
  • Patent number: 4522205
    Abstract: Apparatus for inducing thrombosis in a blood vessel subjacent a surface 14 of a living human or animal body comprises a therapeutic electrode 15, 21, 22, 23, 24, in the form of an inflatable balloon which is flexible enough to conform to the surface, and which maintains the electrode in contact with the surface and restricts the flow of blood through the blood vessel during induction of thrombosis therein. Direct current is flowed through the electrode as anode and a counter cathode to coagulate the blood in the blood vessel adjacent the anode. The apparatus is useful to treat active oesophageal variceal bleeding, in which application the electrode 15 may have the general form of a Sengstaken-Blakemore oesophageal tamponade tube.
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: June 11, 1985
    Assignee: The University Court of The University of Edinburgh
    Inventors: Thomas V. Taylor, James M. Neilson
  • Patent number: 4512366
    Abstract: A self-acting fluid non-return valve (e.g. a prosthetic heart valve) comprises a flap member located in a smooth bored passage to turn about a pivoting axis between closed and open positions under the influence of pulsing fluid flow through the passage. The pivoting axis divides the flap member into major and minor areas, the former of which is downstream of the axis when the flap member is open to fluid flow. The movement of the flap member is caused by an aerofoil shaping of the flap member which is localized to a part only of the major area.
    Type: Grant
    Filed: July 9, 1982
    Date of Patent: April 23, 1985
    Assignee: The University Court of the University of Edinburgh
    Inventor: Jeffrey M. O. Lewis
  • Patent number: 4458183
    Abstract: To reduce battery drain by a DC electric motor (e.g. in the case of an ambulatory monitoring tape recorder) the motor is fed with pulses of current derived from a pulse circuit that includes a differential amplifier monitoring the voltage difference between a first reference voltage that is related to torque load on the motor and a second reference voltage that is derived by adding a sawtooth waveform to a base signal that is proportional to the voltage across the motor.
    Type: Grant
    Filed: October 15, 1982
    Date of Patent: July 3, 1984
    Assignee: The University Court of the University of Edinburgh
    Inventor: James M. M. Neilson
  • Patent number: 4342104
    Abstract: The invention relates to a novel helium-speech unscrambler which can be located at a diver's location, and enables the helium-speech voiced by the diver to be subjected to waveform time expansion to reduce the bandwidth of the helium speech (e.g. to 2 to 3 KHZ) prior to transmitting the speech signals to a distant location on a carrier wave selected for optimum transmission through the water.
    Type: Grant
    Filed: October 30, 1980
    Date of Patent: July 27, 1982
    Assignee: University Court of the University of Edinburgh
    Inventor: Mervyn A. Jack
  • Patent number: 4085205
    Abstract: The control of the sex ratio of mammalian offspring by the artificial insemination of a female mammal with a mixture of semen from a corresponding male mammal and serum or active serum components. The method enables the sex ratio to be controlled more economically and with less risk to the female.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: April 18, 1978
    Assignee: The University Court of the University of Edinburgh
    Inventor: Richard John Taylor Hancock
  • Patent number: 4082789
    Abstract: This invention is a group of prostaglandin-like compounds of the formula: ##STR1## wherein m is 0, 1, 2, or 3 and n is 2, 3, 4, or 5, wherein X and Y are --CH.sub.2 CH.sub.2 -- or X is cis--CH.dbd.CH-- and Y is --CH.sub.2 CH.sub.2 -- or cis--CH.dbd.CH--, and wherein R.sub.1 is hydrogen, alkyl of one to 12 carbon atoms, inclusive, cycloalkyl of 3 to 10 carbon atoms, inclusive, aralkyl of 7 to 12 carbon atoms, inclusive, phenyl, or phenyl substituted with one, 2, or 3 chloro or alkyl of one to 4 carbon atoms, inclusive, and the pharmacologically acceptable salts thereof when R.sub.1 is hydrogen. These compounds are useful as vasodepressors and antisecretory agents, and in managing cases of renal disfunction.
    Type: Grant
    Filed: March 1, 1976
    Date of Patent: April 4, 1978
    Assignee: The University Court of the University of Edinburgh
    Inventor: Robert L. Jones
  • Patent number: 4058664
    Abstract: This invention is a group of prostaglandin-like compounds of the formula: ##STR1## wherein m is 0, 1, 2, or 3 and n is 2, 3, 4, or 5, wherein X and Y are --CH.sub.2 CH.sub.2 -- or X is cis-CH.dbd.CH-- and Y is --CH.sub.2 CH.sub.2 -- or cis--CH.dbd.CH--, and wherein R.sub.1 is hydrogen, alkyl of 1 to 12 carbon atoms, inclusive, cycloalkyl of 3 to 10 carbon atoms, inclusive, aralkyl of 7 to 12 carbon atoms, inclusive, phenyl, or phenyl substituted with 1, 2, or 3 chloro or alkyl of 1 to 4 carbon atoms, inclusive, and the pharmacologically acceptable salts thereof when R.sub.1 is hydrogen. These compounds are useful as vasodepressors and antisecretory agents, and in managing cases of renal disfunction.
    Type: Grant
    Filed: January 14, 1976
    Date of Patent: November 15, 1977
    Assignee: The University Court of the University of Edinburgh
    Inventor: Robert L. Jones
  • Patent number: 3981801
    Abstract: A method of preparing samples of a liquid the composition of which varies from one region to another within a given volume, for subsequent storage or use, in which a first liquid is introduced into a long narrow tube which has particular dimensions and which may or may not be provided with a particulate filling, and subsequently a second liquid is introduced into the tube in circumstances such that in the tube the second liquid has a varying composition from point to point along the tube. The variation in composition may be caused by absorption by a packing if the tube has one, by dispersion of the front between the first and second liquids if they are miscible, or the second liquid may already have such a variable composition when introduced into the tube. The ends of the tube are then sealed if the sample is to be stored.
    Type: Grant
    Filed: February 14, 1974
    Date of Patent: September 21, 1976
    Assignee: University of Edinburgh
    Inventor: John Henderson Knox
  • Patent number: 3940692
    Abstract: A method and apparatus for monitoring recurrent waveforms such as electrocardiogram (e.c.g.) waveforms. The e.c.g. apparatus comprises integrators and stores for storing integrated segments of a normal, reference waveform complex. A timing circuit derives timing signals from the e.c.g. waveform to be monitored. The timing signals represent the time location of particular selected parts of the waveform which are to be compared with the corresponding parts of the stored waveform. The e.c.g. waveform is corrected by subtracting a version of the waveform after it has passed through a low pass filter from a delayed version. Corrected segments of the waveform are integrated and subtracted from the corresponding stored segments of the reference waveform to provide a difference signal and the difference signals are quantitatively summed. An output signal is produced if the total sum of the magnitudes of the difference signals exceeds a predetermined value to indicate an abnormal complex.
    Type: Grant
    Filed: December 14, 1973
    Date of Patent: February 24, 1976
    Assignee: The University of Edinburgh
    Inventor: James McEwan McIntyre Neilson