Average Co-Inventor Count = 8.00
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. Takenaka Corporation (1 from 61 patents)
2. Hayashi Kasei Co., Ltd. (1 from 1 patent)
1 patent:
1. 5122191 - Admixture and cement composition using same