Average Co-Inventor Count = 2.00
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. Ricon Corporation (2 from 49 patents)
2 patents:
1. 7001132 - Foldable ramp
2. 6062805 - Vehicular wheelchair step lift