Average Co-Inventor Count = 6.67
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. Kabushiki Kaisha Komatsu Seisakusho (3 from 1,009 patents)
3 patents:
1. 5330292 - System and method for transmitting and calculating data in shield machine
2. 5240350 - Apparatus for detecting position of underground excavator and magnetic
3. 5199818 - Method and apparatus for detecting collapse of natural ground in shield