Average Co-Inventor Count = 3.75
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. Mitsubishi Denki Kabushiki Kaisha (2 from 21,351 patents)
2. Nippon Telephone and Telegraph Corporation (1 from 21 patents)
2 patents:
1. 6671730 - Data gateway unit and data gateway method
2. 5249185 - Voice packet assembling/disassembling apparatus