Average Co-Inventor Count = 2.00
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. Ingersoll-rand Company (2 from 1,201 patents)
2 patents:
1. 5743345 - Drill bit for reverse drilling
2. D382887 - Back drilling threaded bit