Patents Assigned to Texas Tech University
  • Method and apparatus for evaluation of phasic visual neurons in humans
    Patent number: 5141305
    Abstract: An apparatus and method for evaluating substantially pure phasic-type neutronal activity associated with a specific pattern of pupil diameter variation comprisesmeans for repeatedly measuring pupil diameter and for outputting signals representing the measurements; andmeans operatively connected to the pupil diameter measuring means for evaluating a pattern of pupil diameter variation in response to the presentation to a subject's eye of at least two images capable of eliciting a substantially pure phasic-type neuronal response.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: August 25, 1992
    Assignee: Texas Tech University Health Sciences Center
    Inventor: Rockefeller S. L. Young
  • Linear rotary differential capacitance transducer
    Patent number: 5028875
    Abstract: A bridge-type capacitance transducer is disclosed. The transducer utilizes a coaxially mounted circular stator and circular rotor to form the capacitance bridge. An excitation voltage is applied to the bridge. The output voltage of the bridge is conditioned by synchronous detection so as to yield a signal proportional to the degree of rotation of the rotor.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: July 2, 1991
    Assignee: Texas Tech University
    Inventor: Randall D. Peters
  • Surgical clip for cholangiography
    Patent number: 4733666
    Abstract: A surgical clip is disclosed. The clip may be used to anchor a cholangiographic catheter that has been previously inserted into the cystic duct to the position it has been placed within the cystic duct.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: March 29, 1988
    Assignee: Texas Tech University Health Sciences Center
    Inventor: Leo C. Mercer, Jr.
  • Glucose level measuring apparatus
    Patent number: 4717546
    Abstract: An apparatus for automatically performing a blood glucose test includes a cylindrical carrier with a holder for receiving a reagent pad. Upon receiving the pad, the carrier holds the pad for a predetermined reaction time and then rotates the pad successively to washing and de-watering stations. After de-watering, the pad is presented to a measuring station at which a reflectometer evaluates the color characteristics of the pad. A display of glucose level as a function of the color change of the pad is presented.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: January 5, 1988
    Assignee: Texas Tech University Health Sciences Center
    Inventor: J. Craig Barnett
  • Hypotensive active peptides
    Patent number: 4687840
    Abstract: The present invention provides a hypotensive composition comprising a peptide having the structure X-Y, Y-X, or a salt thereof, wherein X is proline or proline-proline and Y is arginine, lysine, arginine-arginine, lysine-lysine, arginine-lysine, or lysine-arginine, together with a pharmaceutically suitable diluent.
    Type: Grant
    Filed: February 11, 1986
    Date of Patent: August 18, 1987
    Assignee: Texas Tech University Health Sciences Center
    Inventors: Peter K. T. Pang, Thomas E. Tenner, Jr.
  • Hypotensive active peptides
    Patent number: 4585757
    Abstract: The present invention provides a hypotensive composition comprising a peptide having the structure X-Y, Y-X, or a salt thereof, wherein X is proline or proline-proline and Y is arginine, lysine, arginine-arginine, lysine-lysine, arginine-lysine, or lysine-arginine, together with a pharmaceutically suitable diluent.
    Type: Grant
    Filed: July 27, 1984
    Date of Patent: April 29, 1986
    Assignee: Texas Tech University Health Sciences Center
    Inventors: Peter K. T. Pang, Thomas E. Tenner, Jr.