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. Nippon Chemical Industrial Co., Ltd. (2 from 163 patents)
2. Toho Ganryo Kogyo Co., Ltd. (1 from 4 patents)
3. Toro Ganryo Kogyo Co., Ltd. (1 from 1 patent)
2 patents:
1. 4375373 - Method of coating inorganic pigments (ultramarine and bronze powder)
2. 4334933 - Process for preparing stable inorganic pigment