Average Co-Inventor Count = 5.83
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. Central Japan Railway Company (3 from 118 patents)
2. Nabtesco Corporation (2 from 379 patents)
3. Nippon Sharyo, Ltd. (2 from 51 patents)
4. Central Japan Railway Company Nippon Sharyo, Ltd. (1 from 2 patents)
5. Tenryu Industries Co., Ltd. (1 from 2 patents)
4 patents:
1. 9663119 - Railroad vehicle and plug door for railroad vehicle
2. 9403540 - Railroad vehicle and plug door for railroad vehicle
3. 9193289 - Vehicle seat
4. 9028004 - Vehicle seat