Average Co-Inventor Count = 2.25
ph-index = 3
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. 5168610 - Complex machine tool
2. 4637758 - Method of driving hollow piles into the ground
3. 4494613 - Method and apparatus for driving hollow piles into the ground