3 Utility Patents
#2,312 in Irvine, CA
#147,392 in California
#604,262 in US
Forward Citations = 2
Company Filing History:
Hitachi Chemical Company, Ltd.
Hitachi Chemical Research Center, Inc.

4. 1 out of 2
Showa Denko Materials (america), Inc.
5. 1 out of 3
City of Sapporo
where one patent can have more than one assignee
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