63 Utility and 9 Design Patents
#256 in Osaka
#4,714 in Japan
#24,358 in the World
rank by utility patentsForward Citations = 361
Company Filing History:



4. 1 out of 54
Sumita Optical Glass, Inc.
5. 1 out of 4
Pioneer Digital Design and Manufacturing Corporation
where one patent can have more than one assignee
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