1. Carbo Ceramics Inc. (14 from 113 patents)

2. National Technology & Engineering Solutions of Sandia, LLC (5 from 1,014 patents)

3. Sandia Corporation (3 from 1,765 patents)

4. Sandia Coroporation (1 from 4 patents)

1. 11993749 - Electrically conductive proppant and methods for detecting, locating and characterizing the electrically conductive proppant

2. 11162022 - Electrically conductive proppant and methods for detecting, locating and characterizing the electrically conductive proppant

3. 11008505 - Electrically conductive proppant

4. 10983241 - Systems and methods for locating and imaging proppant in an induced fracture

5. 10975295 - Proppant having non-uniform electrically conductive coatings and methods for making and using same

6. 10870793 - Electrically conductive proppant and methods for energizing and detecting same in a single wellbore

7. 10767465 - Simulating current flow through a well casing and an induced fracture

8. 10578762 - Systems and methods for locating and imaging proppant in an induced fracture

9. 10538695 - Electrically conductive proppant and methods for detecting, locating and characterizing the electrically conductive proppant

10. 10514478 - Systems and methods for removal of electromagnetic dispersion and attenuation for imaging of proppant in an induced fracture

11. 10267134 - Methods and systems for determining subterranean fracture closure

12. 10106732 - Proppant having non-uniform electrically conductive coatings and methods for making and using same

13. 9927549 - Systems and methods for locating and imaging proppant in an induced fracture

14. 9551210 - Systems and methods for removal of electromagnetic dispersion and attenuation for imaging of proppant in an induced fracture

15. 9250351 - Systems and methods for locating and imaging proppant in an induced fracture