Daniel Silverman
35Patents
15h-index
4Co-inventors
74Inventor score
Filing activity: Oct 18, 1973 → Dec 14, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4282587A | Method for monitoring the recovery of minerals from shallow geological formations | Physics | 180 | Expired |
| US4159463A | Method of three dimensional seismic prospecting | Physics | 80 | Expired |
| US4213038A | Access security system | Physics | 59 | Expired |
| US4150781A | Access authentication system | Physics | 55 | Expired |
| US4599509A | Access security control | Physics | 37 | Expired |
| US4432078A | Method and apparatus for fracturing a deep borehole and determining the fracture azimuth | Physics | 36 | Expired |
| US3979724A | Seismic method for determining the position of the bottom of a long pipe in a deep borehole | Physics | 32 | Expired |
| US4280200A | Seismic method of mapping horizontal fractures in the earth | Physics | 25 | Expired |
| US4144949A | Bit positioning while drilling system | Physics | 24 | Expired |
| US3984805A | Parallel operation of seismic vibrators without phase control | Physics | 22 | Expired |
| US3999042A | Access control system | Physics | 19 | Expired |
| US4064481A | Vibrator and processing systems for vibratory seismic operations | Physics | 18 | Expired |
| US4497044A | Seismic wave generator | Physics | 17 | Expired |
| US4479204A | Method of monitoring the spacial production of hydrocarbons from a petroleum reservoir | Physics | 17 | Expired |
| US4524434A | Method for determining the azimuth and length of a deep vertical fracture in the earth | Physics | 16 | Expired |
| US4395628A | Access security control | Physics | 15 | Expired |
| US3979140A | Seismic method for logging position of a deep borehole in the earth | Physics | 13 | Expired |
| US4464566A | Access security control | Physics | 13 | Expired |
| US4303852A | Access security control | Physics | 13 | Expired |
| US3993974A | Seismic method for determining the position of the bit on a drill stem in a deep borehole | Physics | 12 | Expired |
| US4252209A | Downhole liquid pressure seismic source and bit positioning system | Physics | 12 | Expired |
| US4069471A | Method of determining weathering corrections in seismic record processing | Physics | 11 | Expired |
| US3983957A | Method and apparatus for creating seismic waves in the earth | Physics | 9 | Expired |
| US4018503A | Holographic systems having reference beam coded holograms | Emerging Cross-Sectional Technologies | 8 | Expired |
| US3947661A | Access authenticating system | Physics | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.