John H. Cantrell
29Patents
13h-index
20Co-inventors
81Inventor score
Filing activity: Nov 4, 1976 → Aug 16, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5746209A | Method of and apparatus for histological human tissue characterizationusing ultrasound | Human Necessities | 252 | Expired |
| US5601086A | Beat frequency ultrasonic microsphere contrast agent detection system | Physics | 97 | Expired |
| US5617873A | Non-invasive method and apparatus for monitoring intracranial pressure and pressure volume index in humans | Human Necessities | 95 | Expired |
| US6475147B1 | Ultrasonic apparatus and technique to measure changes in intracranial pressure | Human Necessities | 53 | Expired |
| US6773407B2 | Non-invasive method of determining absolute intracranial pressure | Human Necessities | 50 | Expired |
| US6761695B2 | Method and apparatus for non-invasive measurement of changes in intracranial pressure | Human Necessities | 42 | Expired |
| US5736642A | Nonlinear ultrasonic scanning to detect material defects | Physics | 41 | Expired |
| US6413227B1 | Method and apparatus for assessment of changes in intracranial pressure | Human Necessities | 32 | Expired |
| US5214955A | Constant frequency pulsed phase-locked loop measuring device | Physics | 30 | Expired |
| US5325339A | Absolute calibration technique for broadband ultrasonic transducers | Physics | 30 | Expired |
| US6740048B2 | Non-invasive method of determining diastolic intracranial pressure | Human Necessities | 15 | Expired |
| US6007489A | Method of and apparatus for histological human tissue characterization using ultrasound | Human Necessities | 14 | Expired |
| US4310906A | Liquid-immersible electrostatic ultrasonic transducer | Physics | 13 | Expired |
| US4912411A | Magneto acoustic emission apparatus for testing materials for embrittlement | Physics | 10 | Expired |
| US4391142A | Frequency tracked gated pulse technique for ultrasonic frequency | Physics | 8 | Expired |
| US5121058A | Method and apparatus for using magneto-acoustic remanence to determine embrittlement | Physics | 8 | Expired |
| US4649750A | Acoustic radiation stress measurement | Physics | 8 | Expired |
| US6746410B2 | Method and apparatus for determining changes in intracranial pressure utilizing measurement of the circumferential expansion or contraction of a patient's skull | Human Necessities | 7 | Expired |
| US5031627A | Method and apparatus for characterizing reflected ultrasonic pulses | Physics | 6 | Expired |
| US6197130A | Method and apparatus to access optimum strength during processing of precipitation strengthened alloys | Physics | 5 | Expired |
| US4080960A | Ultrasonic technique for characterizing skin burns | Human Necessities | 4 | Expired |
| US7845215B2 | Resonant difference-frequency atomic force ultrasonic microscope | Physics | 4 | Active |
| US6343513B1 | Non-destructive evaluation method and apparatus for measuring acoustic material nonlinearity | Physics | 4 | Expired |
| US5448995A | Method and apparatus for non-invasive evaluation of diaphragmatic function | Physics | 4 | Expired |
| US5109195A | Magneto acoustic emission method for testing materials for embrittlement | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.