Average Co-Inventor Count = 4.00
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. Bell Helicopter Textron Inc. (2 from 841 patents)
2 patents:
1. D458892 - Quad tiltrotor
2. D453317 - Quad tiltrotor