Average Co-Inventor Count = 3.00
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. Sioux Steel Company (1 from 30 patents)
2. Spartan Motors, Inc. (1 from 24 patents)
2 patents:
1. 8555990 - Integrated pumper apparatus
2. 6854926 - Zero ground disturbance system