Average Co-Inventor Count = 3.43
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. Johnson Matthey Inc. (1 from 268 patents)
2. Johnson Matthey Fuel Cells Limited (1 from 38 patents)
2 patents:
1. 10811716 - Ion-conducting membrane
2. 5939028 - Combatting air pollution