Average Co-Inventor Count = 2.57
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 Oil Comapny (2 from 7,646 patents)
2. Other (1 from 832,812 patents)
3 patents:
1. 5117510 - Headband construction for supporting head lamps
2. 4252465 - Pipeline gel plug
3. 3977469 - Conservation of water for core flow