Average Co-Inventor Count = 7.89
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. Hitachi, Ltd. (2 from 42,508 patents)
3. Koito Electric Industries, Ltd. (2 from 23 patents)
4. A & F Corporation (2 from 2 patents)
5. Nippon Sharyo, Ltd. (1 from 51 patents)
5 patents:
1. 11665805 - Lighting device
2. 11105489 - Illumination lens
3. D884557 - Rail vehicle
4. D867208 - Rail vehicle
5. 9380863 - Folding table