Average Co-Inventor Count = 5.00
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.
4 patents:
1. D922922 - Exhaust silencer
2. D910522 - Exhaust pipe baffle
3. D875009 - Exhaust pipe
4. D875010 - Muffler for motors