Average Co-Inventor Count = 4.80
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. Sikorsky Aircraft Corporation (1 from 992 patents)
2. Sirorsky Aircraft Corporation (1 from 1 patent)
2 patents:
1. 7758310 - Translational thrust system for a rotary wing aircraft
2. D524229 - Rigid coaxial rotor helicopter with auxiliary propulsion (small)