Average Co-Inventor Count = 4.61
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. Bridgestone Corporation (3 from 5,119 patents)
3 patents:
1. 4987939 - Heavy duty pneumatic radial tires with carcass plies composed of
2. 4811773 - Heavy duty pneumatic radial tires
3. 4700764 - Heavy duty pneumatic radial tires