Average Co-Inventor Count = 1.14
ph-index = 5
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. Yamaha Corporation (8 from 5,454 patents)
8 patents:
1. D1067212 - Speaker
2. D847123 - Handle for speaker
3. D791737 - Audio mixer
4. D786830 - Mixer
5. D753629 - Speaker
6. D698335 - Speaker
7. D691588 - Audio mixer
8. D595761 - Electronic piano