1. Saudi Arabian Oil Company (23 from 6,890 patents)

1. 12331639 - System and method for minimizing environmental noises on acoustic signals

2. 12117580 - Evaluation of rock physical properties from drill sounds through minimizing the effect of the drill bit rotation

3. 11920460 - Identifying formation layer tops while drilling a wellbore

4. 11920467 - Minimization of drill string rotation rate effect on acoustic signal of drill sound

5. 11231512 - Apparatus and methods of evaluating rock properties while drilling using acoustic sensors installed in the drilling fluid circulation system of a drilling rig

6. 10920574 - Acoustic testing of core samples

7. 10851641 - Acoustic testing of core samples

8. 10669846 - Apparatus, computer readable medium, and program code for evaluating rock properties while drilling using downhole acoustic sensors and a downhole broadband transmitting system

9. 10551516 - Apparatus and methods of evaluating rock properties while drilling using acoustic sensors installed in the drilling fluid circulation system of a drilling rig

10. 10180061 - Methods of evaluating rock properties while drilling using downhole acoustic sensors and a downhole broadband transmitting system

11. 10120090 - Evaluation of rock boundaries and acoustic velocities using drill bit sound during vertical drilling

12. 10036246 - Apparatus, computer readable medium, and program code for evaluating rock properties while drilling using downhole acoustic sensors and a downhole broadband transmitting system

13. 9989661 - Methods for evaluating rock properties while drilling using drilling rig-mounted acoustic sensors

14. 9903974 - Apparatus, computer readable medium, and program code for evaluating rock properties while drilling using downhole acoustic sensors and telemetry system

15. 9696444 - Dynamic threshold systems, computer readable medium, and program code for filtering noise and restoring attenuated high-frequency components of acoustic signals