Average Co-Inventor Count = 5.00
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. Sumitomo Cement Co., Ltd. (2 from 35 patents)
2 patents:
1. 5681885 - Coating material for antistatic high refractive index film formation
2. 5446339 - Cathode ray tube having antistatic/anti-reflection film-covered