Average Co-Inventor Count = 5.00
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. Nippon Kayaku Kabushiki Kaisha (2 from 775 patents)
2 patents:
1. 4675339 - Spherical amino acid preparation
2. 4582928 - Process for producing optically active phenylalanine