Average Co-Inventor Count = 2.67
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. Other (1 from 832,718 patents)
2. Pioneer Corporation (1 from 2,646 patents)
2 patents:
1. 6947836 - Navigation apparatus, facility information searching method, program thereof, and a recording medium with the program recorded therein
2. 6473376 - Text information reproducing apparatus