Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6343513 | Non-destructive evaluation method and apparatus for measuring acoustic material nonlinearity | John H. Cantrell | 2002-02-05 |
| 6197130 | Method and apparatus to access optimum strength during processing of precipitation strengthened alloys | John H. Cantrell | 2001-03-06 |
| 6007489 | Method of and apparatus for histological human tissue characterization using ultrasound | John H. Cantrell, George A. Tal Er | 1999-12-28 |
| 5773811 | Method for marking, capturing and decoding machine-readable matrix symbols using ultrasound imaging techniques | Harry F. Schramm, Jr., Donald L. Roxby, James D. Teed | 1998-06-30 |
| 5746209 | Method of and apparatus for histological human tissue characterizationusing ultrasound | John H. Cantrell, George A. Taler | 1998-05-05 |
| 5736642 | Nonlinear ultrasonic scanning to detect material defects | John H. Cantrell | 1998-04-07 |
| 5617873 | Non-invasive method and apparatus for monitoring intracranial pressure and pressure volume index in humans | John H. Cantrell | 1997-04-08 |
| 5601086 | Beat frequency ultrasonic microsphere contrast agent detection system | Robert A. Pretlow, III, John H. Cantrell | 1997-02-11 |
| 5566573 | Capacitive acoustic wave detector and method of using same | — | 1996-10-22 |
| 5448995 | Method and apparatus for non-invasive evaluation of diaphragmatic function | Juliette L. Wait, Patricia A. Nahormek, John H. Cantrell, Pamela D. Hanna-Hawver | 1995-09-12 |
| 5393980 | Quality monitor and monitoring technique employing optically stimulated electron emmission | Christopher Welch, Edmond J. Joe, Bill B. Hefner, JR. | 1995-02-28 |
| 5325339 | Absolute calibration technique for broadband ultrasonic transducers | John H. Cantrell | 1994-06-28 |
| 5214955 | Constant frequency pulsed phase-locked loop measuring device | Peter W. Kushnick, John H. Cantrell | 1993-06-01 |
| 5164669 | Method of characterizing residual stress in ferromagnetic materials using a pulse histogram of acoustic emission signals | Min Namkung, Peter W. Kushnick, John L. Grainger | 1992-11-17 |
| 5121058 | Method and apparatus for using magneto-acoustic remanence to determine embrittlement | Sidney G. Allison, Min Namkung, John H. Cantrell | 1992-06-09 |
| 5117184 | Magnetic remanence method and apparatus to test materials for embrittlement | Sidney G. Allison, Min Namkung, John H. Cantrell | 1992-05-26 |
| 5109195 | Magneto acoustic emission method for testing materials for embrittlement | Sidney G. Allison, Min Namkung, John H. Cantrell | 1992-04-28 |
| 5031627 | Method and apparatus for characterizing reflected ultrasonic pulses | John H. Cantrell | 1991-07-16 |
| 4912411 | Magneto acoustic emission apparatus for testing materials for embrittlement | Sidney G. Allison, Min Namkung, John H. Cantrell | 1990-03-27 |
| 4823609 | Ultrasonic method and apparatus for determining crack opening load | — | 1989-04-25 |
| 4649750 | Acoustic radiation stress measurement | John H. Cantrell | 1987-03-17 |
| 4310906 | Liquid-immersible electrostatic ultrasonic transducer | John H. Cantrell, Joseph S. Heyman, Michael A. Torbett, Mack A. Breazeale | 1982-01-12 |