Average Co-Inventor Count = 2.40
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. Sigma Electric Manufacturing Corporation (2 from 17 patents)
2 patents:
1. 9281671 - Cast one-piece outlet box
2. 9263868 - Integral box