David L. Freeman
7Patents
6h-index
8Co-inventors
56Inventor score
Filing activity: May 28, 1975 → Aug 19, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4555934A | Method and apparatus for nonsteady state testing of permeability | Physics | 47 | Expired |
| US4019373A | Ultrasonic transducer mounting and coupling assembly | Physics | 36 | Expired |
| US4839516A | Method for quantitative analysis of core samples | Physics | 32 | Expired |
| US4097801A | Cross-correlator circuit | Physics | 28 | Expired |
| US4238733A | Corona discharge monitor system | Physics | 15 | Expired |
| US4856388A | Adjustable length extension | Performing Operations; Transporting | 8 | Expired |
| US7330583B2 | Integrated visual imaging and electronic sensing inspection systems | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.