Average Co-Inventor Count = 3.00
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. Yanmar Agricultural Equipment Co., Ltd. (1 from 26 patents)
2. Seirei Industry Co., Ltd. (1 from 7 patents)
1 patent:
1. 5992260 - Operating device for a working vehicle