Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4729101 | Method for identifying and separating the effects of elastic and anelastic formation properties in seismic data | Kenneth E. Hanson, Christopher Crowe, Carl H. Sondergeld, Leon Thomsen | 1988-03-01 |
| 4692910 | Methods of determining lithological characteristics of an underground formation which utilize compressional velocity and shear velocity data | Carl H. Sondergeld, Janice Norris | 1987-09-08 |