Average Co-Inventor Count = 3.00
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. 6672205 Canada Incorporated (2 from 3 patents)
2 patents:
1. 9909276 - Pick hole guard for manhole covers
2. 8579541 - Pick hole guard for manhole covers