28 Utility Patents
#65 in Hiroshima, 729-3431
#22,038 in Japan
#102,658 in the World
Forward Citations = 114
Company Filing History:

Nishikawa Rubber Co., Ltd.
Katayama Kogyo Co., Ltd.
4. 1 out of 2
Ishizaki Honten Co., Ltd.
where one patent can have more than one assignee
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