Average Co-Inventor Count = 5.09
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. Nec Corporation (2 from 35,689 patents)
2 patents:
1. 6655581 - Automatic teller machine
2. D375515 - Music selection device