Average Co-Inventor Count = 7.0
ph-index = 1
Forward Citations = 1(Granted Patents)
Company Filing History:
1 out of 1 Sumikin Osaka Plant Engineering Co., Ltd.
1 out of 65 
Railway Technical Research Institute
1 out of 1 Sumitomo Metal Technology Inc.
where one patent can have more than one assignee
Years Active: 1994
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1 patent (USPTO):Explore Patents
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