Average Co-Inventor Count = 5.46
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. Japan Petroleum Exploration Co., Ltd. (2 from 80 patents)
2. Japan Fine Ceramics Center (1 from 45 patents)
2 patents:
1. 9486734 - Helium gas separator material and method for producing the same
2. 9417008 - Production method and production system for natural gas