Average Co-Inventor Count = 3.00
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. Director-general Seiichi Ishizaka of the Agency of Industrial Science (1 from 1 patent)
1 patent:
1. 4251345 - Method for effecting coal-liquefying reaction