Average Co-Inventor Count = 2.00
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. Hustler Golf Co. (3 from 3 patents)
3 patents:
1. 6007434 - Golf club
2. 5931743 - Putter having club head with a golf-ball engagement insert and a shaft
3. 5716290 - Balanced putter with top spin facility