Average Co-Inventor Count = 8.00
ph-index = 3
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. Johnson Health Tech Co., Ltd (4 from 115 patents)
4 patents:
1. RE48306 - Stair exerciser apparatus
2. RE47331 - Stair exerciser apparatus
3. 8974353 - Stair exerciser apparatus
4. 8702571 - Stair exerciser apparatus