Average Co-Inventor Count = 2.40
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 Public Limited Company (2 from 837 patents)
2 patents:
1. 9625440 - Method of marking hydrocarbon liquids
2. 9506000 - Tracers and method of marking liquids