Average Co-Inventor Count = 1.29
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. Pioneer Corporation (3 from 2,651 patents)
3 patents:
1. 8521425 - Position registering apparatus, route retrieving apparatus, position registering method, position registering program, and recording medium
2. 8456326 - Position registering apparatus, position registering method, position registering program, and recording medium
3. 8190356 - Navigation apparatus, position registering method, position registering program, and recording medium