Average Co-Inventor Count = 10.00
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. Canon Kabushiki Kaisha (1 from 90,594 patents)
2. Tokyo Institute of Technology (1 from 566 patents)
3. Sophia School Corporation (1 from 40 patents)
1 patent:
1. 9022531 - Piezoelectric element, liquid discharge head and liquid discharge apparatus