Average Co-Inventor Count = 4.00
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. Tohoku University (1 from 984 patents)
2. Japan Oil, Gas and Metals National Corporation (1 from 94 patents)
3. Japan Drilling Co., Ltd. (1 from 7 patents)
1 patent:
1. 8256530 - Method of processing rock with laser and apparatus for the same