Average Co-Inventor Count = 1.87
ph-index = 3
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. Norskhydro Asa (2 from 172 patents)
2. Norsk Hydro, A.s. (1 from 240 patents)
3. Statoil Petroleum As (1 from 163 patents)
4 patents:
1. 9381463 - Method and absorber for removal of acid gas from natural gas
2. 6800115 - Method and a device for gas treatment
3. 6655150 - Method for removing and recovering CO2 from exhaust gas
4. 5230877 - Method for removal of ammonia from a gas mixture