Average Co-Inventor Count = 2.00
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. Pfeiffer Vacuum Gmbh (1 from 95 patents)
1 patent:
1. 11499556 - Dry vacuum pump with a pressure variation reducing expansion device between a pumping side volume and an oil sump