Average Co-Inventor Count = 9.00
ph-index = 2
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. (2 from 11,787 patents)
2 patents:
1. 6340063 - Steerable rotary directional drilling method
2. 6244361 - Steerable rotary drilling device and directional drilling method