Average Co-Inventor Count = 2.00
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. Nec Corporation (2 from 35,689 patents)
2 patents:
1. 5486656 - Printed circuit board having an extra plate connected to a product
2. 5123042 - Cordless telephone apparatus which avoids simultaneous connecting