Average Co-Inventor Count = 3.43
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. Denki Kagaku Kogyo Kabushiki Kaisha (2 from 475 patents)
2 patents:
1. 5903161 - Electrically conductive rod-shaped single crystal product and assembly
2. 4311941 - Thermionic cathode supporting device