Average Co-Inventor Count = 4.20
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. Hitachi, Ltd. (1 from 42,485 patents)
2. Jidosha Denki Kogyo K.k. (1 from 34 patents)
3. Hitachi Mizusawa Electronics Co. (1 from 7 patents)
2 patents:
1. 5642269 - Power supply apparatus having separate plural outputs
2. 5069502 - Sunroof driving apparatus