Average Co-Inventor Count = 7.00
ph-index = 1
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. Bridgestone Corporation (3 from 5,124 patents)
3 patents:
1. 7013573 - Hole center detecting apparatus, straightness measuring apparatus, and residual torsion measuring apparatus
2. 6752025 - Hole center detecting apparatus, straightness measuring apparatus, and residual torsion measuring apparatus
3. 6578280 - Hole center detecting apparatus, straightness measuring apparatus, and residual torsion measuring apparatus