Average Co-Inventor Count = 4.44
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. Pioneer Corporation (3 from 2,649 patents)
2. Pioneer Design Corporation (2 from 9 patents)
3. Other (1 from 832,912 patents)
4 patents:
1. 7751970 - Information providing apparatus, information providing method, and computer product
2. 6882326 - Portable information terminal
3. 6876871 - Portable information terminal
4. 6807276 - Portable telephone