Average Co-Inventor Count = 4.12
ph-index = 4
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. Caterpillar Inc. (5 from 9,457 patents)
2. Perkins Engines Company Limited (1 from 166 patents)
6 patents:
1. 7878052 - High pressure cavitation system
2. 7739994 - Thermoelectric system for an engine
3. 7370613 - Eccentric crank variable compression ratio mechanism
4. 6694930 - Piston assembly for use in a free piston internal combustion engine
5. 6463903 - Piston assembly for free piston internal combustion engine
6. 5765534 - Loading absorbing jumper tube assembly