Average Co-Inventor Count = 5.00
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. Other (1 from 832,718 patents)
2. Chichibu Cement Co., Ltd. (1 from 24 patents)
1 patent:
1. 4769351 - Hydrothermal process for preparing zirconia-alumina base ultra-fine