Average Co-Inventor Count = 5.83
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. Bridgestone Corporation (2 from 5,119 patents)
2 patents:
1. 5656344 - Electroconductive polyurethane foam
2. 5475473 - Electric charging member and electric charging apparatus