Average Co-Inventor Count = 6.67
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. Eisai Company, Limited (2 from 677 patents)
2. Eisai Chemical Co., Ltd. (1 from 21 patents)
2 patents:
1. 6642377 - Process for the preparation of basic antibiotic-inorganic acid addition salts and intermediate oxalates
2. 5637716 - Processes for the preparation of hydroquinone and benzoquinone