Average Co-Inventor Count = 1.20
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. Southwest University of Science and Technology (1 from 13 patents)
3 patents:
1. 11549222 - Vertical ground heat exchanger for reducing temperature in carbonaceous shale rock mass and preventing roadbed frost heave
2. D765800 - Toy for children
3. D740857 - Digital player