Average Co-Inventor Count = 2.00
ph-index = 2
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. Quantum Chemical Corporation (1 from 124 patents)
2. Internorth, Inc. (1 from 34 patents)
2 patents:
1. 4822578 - Removal of hydrocarbon impurities from natural gas-derived methane
2. 4582950 - Removal of acetylene and carbon monoxide from methane and ethane