Average Co-Inventor Count = 1.20
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. Kabushiki Kaisha Tokai Rika Denki Seisakusho (4 from 2,005 patents)
4 patents:
1. 8234895 - Key apparatus
2. 8186190 - Key device
3. 8141397 - Key regulating device
4. 8069694 - Key device