Average Co-Inventor Count = 2.86
ph-index = 2
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. Mitsubishi Mining and Cement Co. Ltd. (1 from 65 patents)
2. Cement Company Ltd. (1 from 1 patent)
3. Mitsubishi Mining (1 from 1 patent)
2 patents:
1. 4522927 - Dielectric ceramic composition
2. 4447853 - Ceramic capacitor