Average Co-Inventor Count = 4.00
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 Corporation (1 from 5,125 patents)
2. Pacific Industrial Company, Ltd. (1 from 170 patents)
1 patent:
1. 4998092 - Tire valve