Average Co-Inventor Count = 2.67
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. Spalding & Evenflo Companies, Inc. (2 from 70 patents)
2 patents:
1. 5093162 - Large-tip composite golf shaft
2. 5083780 - Golf club shaft having selective reinforcement