52 Utility and 5 Design Patents
#392 in Kawasaki
#7,192 in Japan
#35,833 in the World
rank by utility patentsForward Citations = 435
Company Filing History:
Tokyo Ohka Kogyo Co., Ltd.

Mitsubishi Rayon Company, Limited
4. 2 out of 99
5. 1 out of 440

where one patent can have more than one assignee
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