Average Co-Inventor Count = 4.00
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. Japan Radio Co., Ltd. (5 from 90 patents)
5 patents:
1. D398546 - Fish finder
2. D394223 - Fish finder
3. D390484 - Radar display unit
4. D390137 - Receiver for satellite navigation
5. D389757 - Radar display unit