Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7622532 | Synthesis of radioactive materials and compositions of same | Paul S. Engel, Kenneth Scott LAVERDURE | 2009-11-24 |
| 7250323 | Methods of making energy conversion devices with a substantially contiguous depletion regions | Wei Sun, Nazir Pyarali Kherani, Philippe Fauchet, Karl D. Hirschman | 2007-07-31 |
| 6949865 | Apparatus and method for generating electrical current from the nuclear decay process of a radioactive material | — | 2005-09-27 |
| 6815665 | Apparatus and methods for determining gravel pack quality | Bruce H. Storm, Jr., Ward E. Shultz | 2004-11-09 |
| 6774531 | Apparatus and method for generating electrical current from the nuclear decay process of a radioactive material | — | 2004-08-10 |
| 6552333 | Apparatus and methods for determining gravel pack quality | Bruce H. Storm, Jr., Ward E. Shultz | 2003-04-22 |
| 6300624 | Radiation detector | Kwang Yoo, Ward E. Schultz | 2001-10-09 |
| 6215120 | Method for determining symmetry and direction properties of azimuthal gamma ray distributions | Gulamabbas Merchant | 2001-04-10 |
| 6037585 | Determination of radioactive scale distribution using gamma ray logging technique | — | 2000-03-14 |
| 5672867 | Method for filtering gamma ray well logging tool response to enhance vertical detail while suppressing statistical noise | Larry A. Jacobson, Gulamabbas Merchant | 1997-09-30 |
| 5578820 | Method for determining cement thickness in a well annulus | Harry D. Smith, Jr. | 1996-11-26 |
| 5434408 | Induced gamma ray spectroscopy well logging system | Harry D. Smith, Jr. | 1995-07-18 |
| 5410152 | Low-noise method for performing downhole well logging using gamma ray spectroscopy to measure radioactive tracer penetration | — | 1995-04-25 |
| 5205167 | Method and apparatus for locating stratification in production fluid in a well | Michael Gärtner | 1993-04-27 |
| 5077471 | Method and apparatus for measuring horizontal fluid flow in downhole formations using injected radioactive tracer monitoring | Harry D. Smith, Jr., Dan M. Arnold | 1991-12-31 |
| 4939361 | Method for correcting gamma ray spectra for borehole tracer interference | Harry D. Smith, Jr. | 1990-07-03 |
| 4857729 | Method of radioactive well logging | Harry D. Smith, Jr. | 1989-08-15 |
| 4825071 | Gamma ray borehole logging method and apparatus having compensation for borehole attenuation effects | Dan M. Arnold | 1989-04-25 |
| 4825073 | Method for determining depth of penetration of radioactive tracers in formation fractures | Harry D. Smith, Jr. | 1989-04-25 |
| 4717825 | Method and apparatus for anomalous radioactive deposition compensation in spectral gamma ray well logging | Harry D. Smith, Jr. | 1988-01-05 |
| 4570067 | Method and apparatus for formation logging using position sensitive neutron detectors | — | 1986-02-11 |