Average Co-Inventor Count = 2.53
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. Aisin Seiki Kabushiki Kaisha (4 from 5,207 patents)
2. Toyota Jidosha Kogyo Kabushiki Kaisha (1 from 1,838 patents)
4 patents:
1. 4923045 - Clutch disc having an integral annulus of friction material
2. 4913275 - Clutch disk apparatus
3. 4261454 - Clutch releasing device
4. 4220233 - Clutch assembly for use with an internal combustion engine