13 Utility Patents
#73 in Saitama-ken
#63,308 in Japan
#296,137 in the World
Forward Citations = 154
Company Filing History:
Sumita Optical Glass, Inc.

where one patent can have more than one assignee
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#73 in Saitama-ken
#63,308 in Japan
#296,137 in the World
Company Filing History:

Get your Inventor Badge Today