Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8212203 | Radiation dosimetry method | David F. Lewis, Xiang Yu | 2012-07-03 |
| 7482601 | Radiation sensitive film including a measuring scale | David F. Lewis, Xiang Yu | 2009-01-27 |
| 6285031 | Radiation dosimetry method and associated apparatus | David F. Lewis | 2001-09-04 |
| 6268602 | Method for manufacturing calibrated radiation dosimeter | Henry Seiwatz, J. Michael Donahue, David F. Lewis | 2001-07-31 |
| 5777341 | Method for manufacturing calibrated radiation dosimeter | Henry Seiwatz, J. Michael Donahue, David F. Lewis | 1998-07-07 |
| 5767520 | Radiation dosimetry method and apparatus | J. Michael Donahue, David F. Lewis, Henry Seiwatz | 1998-06-16 |
| 5637876 | Radiation dosimetry method and apparatus | J. Michael Donahue, David F. Lewis, Henry Seiwatz | 1997-06-10 |
| 5084623 | Radiation dosage indicator | David F. Lewis | 1992-01-28 |
| 5051597 | Radiation dosage indicator | David F. Lewis, Mark L. Moskowitz, Anthony Pilato, Robert D. Schenfele | 1991-09-24 |
| 4786806 | Retarding field spectrometer | Henry Seiwatz | 1988-11-22 |