Average Co-Inventor Count = 3.00
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. Alpine Electronics, Inc. (2 from 937 patents)
2 patents:
1. 7720988 - Method and apparatus for multimedia reproduction
2. 7307935 - Recording and playback apparatus, music-data recording and playback method, and music-data recording and playback program