Average Co-Inventor Count = 5.31
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. Northrop Grumman Systems Corporation (2 from 3,385 patents)
2 patents:
1. 5831409 - Electric vehicle propulsion system employing AC induction motor control
2. 5529114 - Electric vehicle coolant pump assembly