Issued Patents All Time
Showing 25 most recent of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5810485 | Auxiliary bearing system | Wilbur Leslie Dublin, Jr. | 1998-09-22 |
| 5806988 | Auxiliary bearing system | Wilbur Leslie Dublin, Jr. | 1998-09-15 |
| 5642944 | Auxiliary bearing system | Wilbur Leslie Dublin, Jr. | 1997-07-01 |
| 5483063 | Zero-spaced epithermal neutron moisture detection system | Hugh E. Hall, Jr. | 1996-01-09 |
| 5461909 | Oxygen activation method for quantitative water flow measurements within and behind well bore casing | — | 1995-10-31 |
| 5077471 | Method and apparatus for measuring horizontal fluid flow in downhole formations using injected radioactive tracer monitoring | Harry D. Smith, Jr., Larry L. Gadeken | 1991-12-31 |
| 5045692 | Simultaneous fluid flow and fluid density measurements using rotameter and nuclear technology | — | 1991-09-03 |
| 5021652 | Directional gamma ray spectrometer | — | 1991-06-04 |
| 4861986 | Tracer injection method | — | 1989-08-29 |
| 4825071 | Gamma ray borehole logging method and apparatus having compensation for borehole attenuation effects | Larry L. Gadeken | 1989-04-25 |
| 4604522 | Method and apparatus for logging a borehole employing dual radiation detectors | — | 1986-08-05 |
| 4585939 | Multi-function natural gamma ray logging system | Harry D. Smith, Jr. | 1986-04-29 |
| 4574193 | Method for logging fluid flow rate, water fraction, and/or salinity of water flowing into a well | Harry D. Smith, Jr. | 1986-03-04 |
| 4529877 | Borehole compensated density logs corrected for naturally occurring gamma rays | — | 1985-07-16 |
| 4501964 | Borehole compensated oxygen activation nuclear well logging | — | 1985-02-26 |
| 4495805 | In-situ permeability determining method | Donald J. Dowling, Albert P. Richter, Jr., Wayne F. Warren | 1985-01-29 |
| 4493998 | Method for monitoring drilling materials for gamma ray activity | Harry D. Smith, Jr., Ward E. Schultz | 1985-01-15 |
| 4459479 | Determination of casing thickness using a natural gamma ray spectroscopy technique | Harry D. Smith, Jr., Carl A. Robbins | 1984-07-10 |
| 4439676 | Natural gamma ray logging with borehole effect compensation | Harry D. Smith, Jr. | 1984-03-27 |
| 4436996 | Borehole compensated KUT log | Harry D. Smith, Jr., Ward E. Schultz | 1984-03-13 |
| 4424444 | Method for simultaneous measurement of borehole and formation neutron lifetimes | Harry D. Smith, Jr. | 1984-01-03 |
| 4365154 | Detection of impurities in a fluid containing free gas using nuclear techniques | Hans J. Paap | 1982-12-21 |
| 4352288 | Measurement of salt content in petroleum flow lines | Hans J. Paap, Richard A. Meador | 1982-10-05 |
| 4297575 | Simultaneous gamma ray measurement of formation bulk density and casing thickness | Harry D. Smith, Jr., Kenneth J. Smith | 1981-10-27 |
| 4287415 | Measurement of flowing water salinity within or behind wellbore casing | — | 1981-09-01 |