18 Utility Patents
#2,707 in Yokohama
#40,952 in Japan
#186,885 in the World
Forward Citations = 243
Company Filing History:
Hitachi, Ltd.
Hitachi Heating Appliances Co., Ltd.

4. 1 out of 158

5. 1 out of 2,916

where one patent can have more than one assignee
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