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. Siegfried Ltd. (1 from 8 patents)
2. Siegfried Aktiengesellschaft (42 patents)
1 patent:
1. 8101756 - Process for the preparation of quaternary N-alkyl morphin or morphinan alkaloid derivatives