Average Co-Inventor Count = 5.14
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. Hitachi, Ltd. (3 from 42,488 patents)
3 patents:
1. 5287814 - Car body of railway rolling stock and method for fabricating car body
2. 5188039 - Method of fixing inside panel of car and structure for fixing the same
3. 5109777 - Car body for railway rolling stock with joggled adjacent side sheet end