Average Co-Inventor Count = 1.33
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. Pilot Precision Kabushiki Kaisha (3 from 16 patents)
4 patents:
1. D462356 - Input pen with light
2. D456842 - Input pen with ball-point pen
3. D453354 - Input pen with ball-point pen
4. D442632 - Combined input pen with ball-point pen