Average Co-Inventor Count = 4.00
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. Handi-Trak Incorporated (2 from 2 patents)
2 patents:
1. 5261470 - Wheelchair traction device for snow and ice
2. 5033993 - Positive, drive conversion kit for motorized wheelchair