Average Co-Inventor Count = 13.00
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. Nippon Hoso' Kyokai (1 from 372 patents)
2. Nhk Engineering System, Inc. (1 from 3 patents)
1 patent:
1. 11404041 - Audio guidance generation device, audio guidance generation method, and broadcasting system