Average Co-Inventor Count = 2.86
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. Ampac Enterprises Inc. (3 from 17 patents)
2. Racer Sporting Goods Co., Ltd. (1 from 17 patents)
4 patents:
1. 11058939 - Catcher's leg guard
2. 10293241 - Catcher's leg guard
3. 9591884 - Ergonomic facemask for an athletic headpiece
4. 8353067 - Umpire chest protector