Average Co-Inventor Count = 10.00
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. Hitachi Industrial Equipment Systems Co., Ltd. (1 from 493 patents)
2. Japan Servo Co.,ltd. (1 from 152 patents)
3. Hitachi Powdered Metals Co., Ltd. (1 from 149 patents)
1 patent:
1. D572660 - Claw teeth motor core