Average Co-Inventor Count = 7.72
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. Kawasaki Jukogyo Kabushiki Kaisha (3 from 3,329 patents)
2. West Japan Railway Company (3 from 4 patents)
3 patents:
1. 8931418 - Bodyshell structure of railcar
2. 8707873 - Bodyshell structure of railcar
3. 8701566 - Railcar