Average Co-Inventor Count = 3.43
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. Sumitomo Electric Industries, Limited (2 from 10,264 patents)
2. Panasonic Intellectual Property Management Co., Ltd. (1 from 13,307 patents)
3. Kawasaki Jukogyo Kabushiki Kaisha (1 from 3,329 patents)
3 patents:
1. 10138972 - Air spring and carriage for vehicle
2. 10122038 - Hydrogen generator and fuel cell system
3. 9759282 - Air spring