Thomas D. Barber
39Patents
17h-index
42Co-inventors
81Inventor score
Filing activity: Jan 12, 1982 → Dec 18, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6297639A | Method and apparatus for directional well logging with a shield having sloped slots | Physics | 118 | Expired |
| US4837517A | Spatial frequency method and apparatus for investigating earth conductivity with high vertical resolution by induction techniques | Physics | 108 | Expired |
| US4651101A | Induction logging sonde with metallic support | Fixed Constructions | 84 | Expired |
| US4873488A | Induction logging sonde with metallic support having a coaxial insulating sleeve member | Physics | 77 | Expired |
| US6351127B1 | Shielding method and apparatus for selective attenuation of an electromagnetic energy field component | Physics | 55 | Expired |
| US6690170B2 | Antenna structures for electromagnetic well logging tools | Electricity | 55 | Expired |
| US6573722B2 | Method and apparatus for cancellation of borehole effects due to a tilted or transverse magnetic dipole | Physics | 51 | Expired |
| US8638104B2 | Method for determining spatial distribution of fluid injected into subsurface rock formations | Physics | 41 | Active |
| US7038457B2 | Constructing co-located antennas by winding a wire through an opening in the support | Electricity | 39 | Expired |
| US6680613B2 | Method and apparatus for cancellation of borehole effects due to a tilted or transverse magnetic dipole | Physics | 33 | Expired |
| US4471436A | Phasor processing of induction logs including shoulder and skin effect correction | Physics | 32 | Expired |
| US5184079A | Method and apparatus for correcting data developed from a well tool disposed at a dip angle in a wellbore to eliminate the effects of the dip angle on the data | Physics | 30 | Expired |
| US6380744B2 | Shielding apparatus for selective attenuation of an electromagnetic energy field component | Physics | 23 | Expired |
| US6710601B2 | Borehole current correction for tilted or transverse magnetic dipoles on conductive supports | Physics | 23 | Expired |
| US6624634B2 | Borehole current correction methods and apparatus | Physics | 22 | Expired |
| US6557794B2 | Coil shielding method for selective attenuation of an electromagnetic energy field component | Physics | 22 | Expired |
| US4513376A | Phasor processing of induction logs including skin effect correction | Physics | 21 | Expired |
| US7091877B2 | Apparatus and methods for determining isotropic and anisotropic formation resistivity in the presence of invasion | Physics | 17 | Expired |
| US6933726B2 | Apparatus and methods for reducing borehole current effects | Physics | 16 | Expired |
| US7414391B2 | Electromagnetic logging tool calibration system | Physics | 15 | Expired |
| US7286091B2 | Co-located antennas | Electricity | 13 | Expired |
| US6047240A | Method and apparatus for evaluating the resistivity of invaded formations at high apparent dip angle | Physics | 11 | Expired |
| US7386430B2 | Method of correcting triaxial induction arrays for borehole effect | Physics | 11 | Expired |
| US4800496A | Method for determining induction sonde error | Physics | 10 | Expired |
| US7042225B2 | Apparatus and methods for induction-SFL logging | Physics | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.