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| Number | Title | Issue Date |
| 4802762 | Optical inspection of polymer-based materials An optical inspection system for using laser-induced luminescence to detect deterioration of a polymer-based material. The inspection system comprises an excitation means for illuminating a specimen of the polymer material to cause it to produce fluoresce... | 02/07/1989 |
| 4796636 | Noninvasive reflectance oximeter A noninvasive optical oximeter for measuring oxygen saturation of arterial blood. A sample of blood is illuminated with light at two different wavelengths. Light reflected by the blood is sensed by a photodetector and an output signal is created in respon... | 01/10/1989 |
| 4791811 | Deposit thickness measurement A system for determining the thickness of an oxide deposit on a conductive surface by applying a voltage across the deposit while measuring the dielectric breakdown of the layer at various points. An electrode mechanism containing a first electrode can be... | 12/20/1988 |
| 4790326 | Method and apparatus for determining pulse rate A method for determining the pulse rate of a person. The method of the present invention is implemented in two phases. The first phase involes the determination of pulse intervals and the second phase provides an indication of the pulse rate based on the ... | 12/13/1988 |
| 4784154 | Interference resistant biomedical transducer An interference resistant biomedical transducer for monitoring the acoustic output of a patient's cardiac or respiratory system which provides a high degree of rejection of acoustic noise and spurious electromagnetic signals. The transducer comprises a pi... | 11/15/1988 |
| 4779626 | Method and apparatus for compensating for transducer position in blood pressure monitoring system A method and apparatus for ensuring accurate measurement of blood pressure regardless of the position of the sensing transducer relative to the position of the patient's heart. The method and apparatus provides a hydrostatic balancing system in which a co... | 10/25/1988 |
