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. Mitsui Minings & Melting Co., Ltd. (2 from 817 patents)
2 patents:
1. 5505761 - Process for preparing metallic cadmium powder
2. 4594301 - Lead-accumulator and active materials used therein