Average Co-Inventor Count = 4.00
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. Ishikawajima-harima Jukogyo Kabushiki Kaisha (1 from 306 patents)
2. Tokyo Keiki Company Limited (1 from 95 patents)
3. Sato Kogyo Co., Ltd. (1 from 8 patents)
1 patent:
1. 5017045 - Method and apparatus for controlling attitude of shield excavator