Average Co-Inventor Count = 1.92
ph-index = 5
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. (10 from 550 patents)
2. Sumitomo Electric Industries, Limited (1 from 10,239 patents)
10 patents:
1. D910093 - Drilling tool
2. D888786 - Drilling tool
3. D882653 - Drilling tool
4. D857069 - Drilling tool
5. D856387 - Drilling tool
6. D847231 - Drilling tool
7. D844683 - Drilling tool
8. D844034 - Drilling tool
9. D794691 - Drilling tool
10. 9707629 - Cutting tool