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. Leiv Eiriksson Nyfotek as (1 from 11 patents)
1 patent:
1. 6533500 - Method for reducing frictional losses in tunnels