Average Co-Inventor Count = 2.22
ph-index = 4
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 (5 from 7,646 patents)
5 patents:
1. 4123451 - Preparation of esters
2. 4110360 - Preparation of esters
3. 4110361 - Preparation of esters
4. 4110362 - Preparation of esters
5. 4110363 - Preparation of esters