2 Utility Patents
#5,665 in Saitama 343-0827
#304,758 in Japan
Forward Citations = 9
Company Filing History:

Chemical Grouting Company, Ltd.
Front Engineering Co. Ltd.
4. 1 out of 1
Shoesangyo Corporation
5. 1 out of 1
Shoeisangyo Corporation
where one patent can have more than one assignee
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