Average Co-Inventor Count = 2.00
ph-index = 2
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 (2 from 4,237 patents)
2 patents:
1. 6079378 - Suction device for a supercharged engine
2. 4359865 - Exhaust system for multicylinder motorbike engine