Average Co-Inventor Count = 1.00
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. Hanaoka Sharyo Co., Ltd. (1 from 3 patents)
2. Hanaoka Sharyo Kabushiki Kaisha (1 from 1 patent)
2 patents:
1. 7309070 - Operation arm and hand cart comprising operation arm
2. D551416 - Hand lift truck