Average Co-Inventor Count = 2.00
ph-index = 1
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Halliburton Energy Services, Inc. (1 from 11,817 patents)
2. Petrobras (1 from 2 patents)
3. Petroleo Brasileiro S.a. - Petrobras (441 patents)
1 patent:
1. 9939419 - Modular sensed annular well apparatus for cement testing