Average Co-Inventor Count = 5.09
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. (1 from 1,177 patents)
2. Nkk Corporation (1 from 614 patents)
3. Nippon Kokan Kabushiki Kaisha (1 from 487 patents)
4. H. Ikeuchi & Co., Ltd. (1 from 9 patents)
2 patents:
1. 5333671 - Thickness adjustable mold for continuous casting
2. 4646977 - Spray nozzle