Average Co-Inventor Count = 2.00
ph-index = 1
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 Tire Company Limited (1 from 504 patents)
2. City of Sapporo (1 from 3 patents)
1 patent:
1. 4305445 - Large-sized pneumatic radial tires