Average Co-Inventor Count = 2.67
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. Rolls-royce Corporation (4 from 5,871 patents)
2. Rolls-royce Deutschland Ltd & Co. Kg (1 from 816 patents)
4 patents:
1. 11542021 - Aircraft propulsion system
2. 10974836 - Aircraft propulsion system
3. 10487688 - Gas turbine engine
4. 10450074 - Aircraft pneumatic system