Average Co-Inventor Count = 2.77
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. Sugino Machine Limited (3 from 117 patents)
3 patents:
1. 11154962 - Burnishing tool
2. 10792787 - Burnishing machine
3. D832320 - Roller for mirror-finishing