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. 3M Innovative Properties Company (1 from 22,081 patents)
1 patent:
1. 7854905 - Holding material for pollution control element and pollution control apparatus