Average Co-Inventor Count = 1.50
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. Shell Oil Comapny (1 from 7,646 patents)
2. Sievers Instruments, Inc. (1 from 19 patents)
2 patents:
1. 6214624 - Use of perfluorocarbons as tracers in chemical compositions
2. 6130095 - Method for the measurement of sulfur compounds