Average Co-Inventor Count = 6.63
ph-index = 5
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. Invacare Corporation (6 from 320 patents)
6 patents:
1. 8931583 - Wheelchair
2. D720659 - Wheelchair
3. 8807251 - Electric motor and brake assembly
4. D642963 - Frame
5. D642500 - Frame
6. D642499 - Wheelchair