Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 12313809 | Non-invaded formation density measurement and photoelectric evaluation using an x-ray source | Philip Teague | 2025-05-27 | |
| 7333398 | Device for the indication of elapsed time | James S. Thompson | 2008-02-19 | |
| 5305377 | Apparatus for providing an | Paul D'Arcy, David M. Evans | 1994-04-19 | $5,929,000 |
| 5274779 | Digital computer interface for simulating and transferring CD-I data including buffers and a control unit for receiving and synchronizing audio signals and subcodes | David A. Stewart, Don Jackson, Maureen Arios | 1993-12-28 | $6,326,000 |
| 5121491 | MIDI to RS 232 interface | David M. Evans | 1992-06-09 | $11,056,000 |