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. Tokushu Shunsetsu Kabushiki Kaisha (1 from 4 patents)
2. Ishikawajima-harima Jukogyo Kaisha (1 from 3 patents)
1 patent:
1. 4080218 - Method of removal of nitrogen oxides, particularly for use in cement raw