Average Co-Inventor Count = 1.33
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. Other (1 from 832,966 patents)
2. Shell Oil Comapny (1 from 7,646 patents)
2 patents:
1. 9759033 - Electronic deadman/autoshear circuit
2. 8970367 - Person on board system and method