Average Co-Inventor Count = 3.00
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. Exxon Production Research Company (1 from 601 patents)
1 patent:
1. 5402392 - Determining orientation of vertical fractures with well logging tools