Average Co-Inventor Count = 9.00
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. Hitachi Telecom Technologies, Ltd (3 from 58 patents)
3 patents:
1. 5666409 - Dealing board
2. 5661793 - Key unit
3. 5418850 - Dealing board