Average Co-Inventor Count = 1.20
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 (3 from 4,237 patents)
3 patents:
1. 5942878 - Method and device for reducing memory effect of battery
2. 5886527 - Method and device for monitoring deterioration of battery
3. 5878831 - Power assisted manually powered vehicle