Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11119062 | Method and assembly for measuring diffusion in nanoporous media | Chandra S. Rai, Son T. Dang | 2021-09-14 |
| 10359379 | Methods of determining shale pore connectivity | Ali Ousseini Tinni, Chandra S. Rai | 2019-07-23 |
| 5134271 | Bar code system used in geophysical exploration | Chandra S. Rai | 1992-07-28 |
| 5109697 | Method of exploration for hydrocarbons | Keith K. Millheim, Houston B. Mount, II, Chandra S. Rai | 1992-05-05 |
| 5012674 | Method of exploration for hydrocarbons | Keith K. Millheim, Houston B. Mount, II, Chandra S. Rai | 1991-05-07 |
| 4996421 | Method an system of geophysical exploration | Chandra S. Rai | 1991-02-26 |
| 4964086 | Method for characterizing velocity estimates | Richard J. O'Connell, Chandra S. Rai | 1990-10-16 |
| 4933911 | Method for determining seismic velocities | Chandra S. Rai | 1990-06-12 |
| 4912979 | Method and apparatus for detecting and measuring elastic anisotropy | Chandra S. Rai, Richard M. Alford | 1990-04-03 |
| 4819214 | Sonic logging system | Paul R. Gutowski, Martin L. Smith | 1989-04-04 |
| 4794572 | Acoustic well logging method and system for obtaining a measure of formation anisotropy | Martin L. Smith | 1988-12-27 |
| 4779236 | Acoustic well logging method and system | — | 1988-10-18 |
| 4754439 | Means for obtaining shear wave velocities | Kenneth E. Hanson, Leon Thomsen, Chandra S. Rai | 1988-06-28 |
| 4740928 | Sonic logging system | Paul R. Gutowski, Martin L. Smith | 1988-04-26 |
| 4729101 | Method for identifying and separating the effects of elastic and anelastic formation properties in seismic data | Kenneth E. Hanson, Christopher Crowe, Albert L. Frisillo, Leon Thomsen | 1988-03-01 |
| 4692910 | Methods of determining lithological characteristics of an underground formation which utilize compressional velocity and shear velocity data | Albert L. Frisillo, Janice Norris | 1987-09-08 |