Average Co-Inventor Count = 4.80
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 Metal Industries, Inc. (2 from 929 patents)
2. Kurosaki Refractories Co., Ltd. (1 from 46 patents)
2 patents:
1. 5084093 - Method for manufacturing molten pig iron
2. 4570909 - Lining apparatus provided with a foldable spray pipe