Average Co-Inventor Count = 3.27
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. Japan Radio Co., Ltd. (3 from 90 patents)
3 patents:
1. D401593 - Navigation antenna
2. D401594 - Navigation antenna
3. D390137 - Receiver for satellite navigation