39 Utility Patents
#111 in Chiba
#12,561 in Japan
#59,679 in the World
Forward Citations = 411
Company Filing History:

Schlumberger Technology Corporation
Other
4. 1 out of 21
Tamagawa Seiki Co., Ltd.
5. 1 out of 1,256
Kawasaki Steel Corporation
where one patent can have more than one assignee
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