Average Co-Inventor Count = 2.40
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. Tokyo Ohka Kogyo Co., Ltd. (1 from 1,233 patents)
2. Photopoly Ohka Co., Ltd. (1 from 3 patents)
2 patents:
1. 5236809 - Photopolymerizable resin composition employing (meth)acrylonitrile in
2. 4741987 - Photopolymerizable composition including benzotriazole carboxylic acid