Average Co-Inventor Count = 3.20
ph-index = 4
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. Kabushiki Kaisha Tokai Rika Denki Seisakusho (4 from 2,004 patents)
4 patents:
1. 8920963 - Portable device
2. 7923647 - Portable device
3. 7328596 - Steering lock
4. 7234328 - Steering lock device