Average Co-Inventor Count = 4.00
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. Maruzen Oil Co. Ltd. (2 from 32 patents)
2 patents:
1. 4243581 - Stabilized polypropylene composition
2. 4221700 - Stabilized polymer composition