15 Utility Patents
#3,329 in Yokohama
#53,218 in Japan
#247,388 in the World
Forward Citations = 138
Company Filing History:
Nippon Oil Corporation
Japan Cooperation Center Petroleum
Nippon Oil Company
4. 2 out of 832,492 patents
Other
5. 2 out of 58
Petroleum Energy Center
where one patent can have more than one assignee
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