Average Co-Inventor Count = 2.40
ph-index = 1
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. D'addario & Company, Inc. (2 from 43 patents)
2 patents:
1. 11961496 - Drumhead with printed layer for initiating ferrous response and method of making
2. 9190039 - Radiation curable drumhead membrane