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. J. D'addario & Company, Inc. (2 from 26 patents)
2 patents:
1. 6291753 - Marching snare drumhead patch
2. 6245979 - Floating staccato waffle disk