Average Co-Inventor Count = 2.00
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. Petroleo Brasileiro S.a. - Petrobras (2 from 433 patents)
2 patents:
1. 5811362 - Process for preparing a Ziegler-type spherical catalyst for alpha-olefin
2. 5807950 - Spherical ultra high molecular weight polyethylene