Average Co-Inventor Count = 1.50
ph-index = 3
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. Shell Western E&p Inc. (2 from 22 patents)
2. Shell Oil Comapny (1 from 7,645 patents)
3. Shell Canada Limited (1 from 8 patents)
3 patents:
1. 5163512 - Multi-zone open hole completion
2. 5108272 - Sucker rod pump
3. 5104301 - Sucker rod pump