Average Co-Inventor Count = 10.47
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. Korea Railroad Research Institute (2 from 49 patents)
2 patents:
1. 11549622 - Sealing device for hyper tube
2. 11525912 - Hyper-tube system using vehicle position detection