Average Co-Inventor Count = 3.64
ph-index = 3
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. Industrial Technology Research Institute (3 from 9,166 patents)
2. Other (1 from 832,912 patents)
4 patents:
1. 7721690 - Valve actuation mechanism
2. 7128671 - Hybrid power system with external auxiliary motor
3. 6663524 - Hybrid power system
4. 6659910 - Hybrid power system with continuously variable speed