Average Co-Inventor Count = 4.44
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. Showa Denko K.k. (1 from 1,960 patents)
2. Japan Polyolefins Co., Ltd. (1 from 29 patents)
2 patents:
1. 5885920 - Process for producing catalyst carrier for olefin polymerization
2. 5723399 - Ethylenic polymerization catalyst