Average Co-Inventor Count = 3.00
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. Pharmacia & Upjohn Ab (1 from 76 patents)
1 patent:
1. 6335030 - Transdermally administered dextromethorphan as antitussive agent