Average Co-Inventor Count = 3.27
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. (3 from 937 patents)
3 patents:
1. D557677 - Digital audio disc player with tuner
2. D557250 - Digital audio disc player with tuner
3. D535282 - Amplifier