Average Co-Inventor Count = 5.46
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. Tdk Corporation (2 from 7,976 patents)
2 patents:
1. 8564180 - Piezoelectric composition, piezoelectric ceramic, transducer, and ultrasonic motor
2. 8231803 - Piezoelectric ceramic and piezoelectric ceramic composition