Average Co-Inventor Count = 6.00
ph-index = 1
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. Yamada Chemical Co., Ltd. (2 from 16 patents)
2 patents:
1. 4835291 - Divinyl compounds and chromogenic recording-material prepared by using
2. 4808567 - Divinyl compounds and chromogenic recording-material prepared by using