Average Co-Inventor Count = 2.40
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. Kabushiki Kaisha Toshiba (2 from 52,722 patents)
2 patents:
1. 7489770 - Receiving device, method for incoming call notification, and program
2. 6639893 - Communication network system including ring network that performs communication through multiple switching devices