Average Co-Inventor Count = 3.27
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. Sumitomo Machinery Corp. of America (3 from 6 patents)
3 patents:
1. D447489 - Gear housing assembly
2. D447148 - Gear housing assembly
3. D431572 - Gear housing