Average Co-Inventor Count = 1.67
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. Toyo Ink Manufacturing Company (1 from 223 patents)
2. Toyo Ink Mfg. Co., Ltd. (1 from 105 patents)
2 patents:
1. 7147704 - Pigment dispersing agent, pigment composition and pigment dispersion
2. 5772746 - Ink jet recording liquid