Average Co-Inventor Count = 7.18
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.
Company Filing History:
1. Sumitomo Electric Hardmetal Corp. (5 from 551 patents)
5 patents:
1. D1009106 - Cutting tool
2. D1001168 - Cutting tool
3. D1000492 - Cutting tool
4. D977540 - Cutting tool
5. D960214 - Cutting tool