Average Co-Inventor Count = 5.00
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. Jx Nippon Oil Energy Corporation (1 from 331 patents)
2. Cosmo Oil Co., Ltd. (1 from 163 patents)
3. Japan Oil, Gas and Metals National Corporation (1 from 94 patents)
4. Japan Petroleum Exploration Co., Ltd. (1 from 80 patents)
5. Inpex Corporation (1 from 73 patents)
6. Nippon Steel & Sumikin Engineering Co., Ltd. (1 from 53 patents)
1 patent:
1. 9688917 - Hydrocarbon-producing apparatus and hydrocarbon-producing method