Average Co-Inventor Count = 9.00
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. Mitsubishi Denki Kabushiki Kaisha (1 from 21,351 patents)
2. Nippon Telegraph and Telephone Public Corporation (1 from 522 patents)
1 patent:
1. 4571999 - Ultrasonic inspecting apparatus