Average Co-Inventor Count = 1.71
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. Yamaha Hatsudoki Kabushiki Kaisha (4 from 4,238 patents)
4 patents:
1. 7735889 - All terrain vehicle with front and rear seats
2. 7413197 - Steering ski device for snowmobile
3. 7255195 - Steering device for snowmobile
4. 6161908 - Drive belt suspension for snowmobile