Average Co-Inventor Count = 6.00
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, Ltd. (2 from 42,517 patents)
2 patents:
1. 7391974 - Wavelength division multiplexing optical transmission equipment and method of amplifying optical wavelength division multiplexed signals
2. 7194210 - Wavelength division multiplexing optical transmission equipment and method of amplifying optical wavelength division multiplexed signals