Average Co-Inventor Count = 3.00
ph-index = 2
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 (2 from 90,631 patents)
2. Taiheiyo Cement Corporation (1 from 90 patents)
3. Nihon Cement Co., Ltd. (1 from 24 patents)
2 patents:
1. 5936327 - Electro-mechanical energy conversion device for vibration driven
2. 5669127 - Method of manufacturing an electro-mechanical energy conversion device