Average Co-Inventor Count = 1.50
ph-index = 1
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. Pfizer Corporation (3 from 4,455 patents)
3 patents:
1. 4100179 - Preparation of citraconic anhydride
2. 3960901 - Preparation of citraconic acid
3. 3932469 - Citraconic anhydride process