Average Co-Inventor Count = 5.33
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. Daicel Corporation (2 from 649 patents)
2. Tokyo Ohka Kogyo Co., Ltd. (1 from 1,236 patents)
2 patents:
1. 9902675 - Vinyl-group-containing fluorene compound
2. 9447013 - Method for producing oxide