Average Co-Inventor Count = 11.00
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 Heavy Industries, Ltd. (2 from 1,186 patents)
2. Sumitomo Metal Industries, Inc. (2 from 929 patents)
2 patents:
1. 4823577 - Method of feeding material to hot forging machine
2. 4761980 - Method of feeding material to hot forging machine