Average Co-Inventor Count = 3.00
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.
Company Filing History:
1. Sumitomo Electric Hardmetal Corp. (3 from 553 patents)
3 patents:
1. D556225 - End mill
2. D555683 - End mill
3. D553169 - End mill