Average Co-Inventor Count = 3.82
ph-index = 3
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. (4 from 42,488 patents)
2. Kyusyu Hitachi Maxell, Ltd. (1 from 6 patents)
5 patents:
1. D342503 - Television receiver
2. D336641 - Television receiver
3. D336643 - Television receiver
4. D300431 - Cordless handset telephone
5. D283061 - Electric hair clipper