Average Co-Inventor Count = 3.75
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. Toshiba Kikai Kabushiki Kaisha (2 from 746 patents)
2 patents:
1. 6298751 - Drive transmission apparatus for twin-screw extruder
2. 5213010 - Driver power transmitting apparatus of twin shaft extruders