Average Co-Inventor Count = 4.00
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. Sumitomo Chemical Company, Limited (1 from 6,893 patents)
2. Nippon Steel Corporation (1 from 3,554 patents)
3. Seitetsu Kagaku Co., Ltd. (1 from 50 patents)
1 patent:
1. 4775394 - Process for separation of high purity gas from mixed gas