Average Co-Inventor Count = 3.27
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. Kobe Steel, Ltd. (1 from 1,887 patents)
2. Kabushiki Kaisha Kobe Seiko Sho (1 from 1,100 patents)
2 patents:
1. 4608651 - Control system for direct teaching/playback type robots
2. 4383455 - Arm with gravity-balancing function