Average Co-Inventor Count = 4.85
ph-index = 4
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)
4 patents:
1. 5936679 - Television receiver having multiple communication capabilities
2. D347063 - Magnetic resonance imaging scanner
3. D345156 - Video tape recorder
4. D300431 - Cordless handset telephone