31 Utility Patents
#1,383 in Yokohama
#18,623 in Japan
#87,136 in the World
Forward Citations = 226
Company Filing History:


Mitsubishi Pencil Company, Limited
4. 2 out of 2,289

5. 1 out of 1,996
Kabushiki Kaisha Tokai Rika Denki Seisakusho
where one patent can have more than one assignee
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