Average Co-Inventor Count = 2.00
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. Alpine Electronics, Inc. (6 from 937 patents)
6 patents:
1. 9554192 - Information terminal system
2. 7720988 - Method and apparatus for multimedia reproduction
3. 7307935 - Recording and playback apparatus, music-data recording and playback method, and music-data recording and playback program
4. 7113456 - Method and apparatus for playing back a multisession disc
5. 6671619 - Navigation device
6. 6424909 - Method and system for retrieving information for a navigation system