Average Co-Inventor Count = 4.20
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.
4 patents:
1. D1034370 - Muffler for motorbikes
2. D1027760 - Muffler for motorbikes
3. D937723 - Muffler for motorcycles
4. D937724 - Muffler for motorcycles