Average Co-Inventor Count = 1.50
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 Sports Co., Ltd. (2 from 1,273 patents)
2 patents:
1. 8425341 - Wood type golf club head
2. 8124205 - Decorated ferrule and golf club using the same