Average Co-Inventor Count = 1.29
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. Kabushiki Kaisha Toshiba (3 from 52,722 patents)
3 patents:
1. 7409064 - Music reproduction apparatus, audio player, and headphone
2. 7143201 - Externally accessible playback apparatus and method
3. 6727421 - Reproducing apparatus