Average Co-Inventor Count = 6.00
ph-index = 1
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 (2 from 5,450 patents)
2. Yamaha Hatsudoki Kabushiki Kaisha (2 from 4,232 patents)
2 patents:
1. 9479851 - Vehicle sound generation apparatus, and vehicle sound generation method
2. 9327644 - Sound generating device for vehicle, and sound generating method for vehicle