Average Co-Inventor Count = 4.00
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. Komatsu Corporation (2 from 2,730 patents)
2 patents:
1. 6182448 - Speed changing device for hydraulic driving apparatus and speed change control method thereof
2. 5784883 - Method of controlling speed change of hydraulic drive device for vehicle