28 Utility Patents
#148 in Ibaraki
#21,928 in Japan
#102,232 in the World
Forward Citations = 123
Company Filing History:

Ishihara Sangyo Kaisha, Ltd.

4. 4 out of 47
National Institute for Research in Inorganic Materials
5. 3 out of 832,398 patents
Other
where one patent can have more than one assignee
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