Average Co-Inventor Count = 4.00
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. Kyowa Hakko Kogyo Co., Ltd. (2 from 730 patents)
2 patents:
1. 5624828 - Process for producing L-tryptophan in serine auxotrophic microorganisms
2. 5595894 - Process for stably maintaining recombinant plasmids in serine