Weifang, Shandong Province, China

Shandong Weifang Rainbow Chemical Co., Ltd.


USPTO Granted Patents = 1


Forward Citations = 0

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9 inventors (with patents filed for the assignee):

goldMedal Guoqing Sun (1 out of 2 patents)

silverMedal Yongsheng Hou (1 out of 2 patents)

bronzeMedal Yong Wu (1 out of 2 patents)

4 Liwei Xu (1 out of 2 patents)

5 Shuai Chen (1 out of 3 patents)

6 Yong Wu (0 patent)


1 patent:

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USPTO Data Jan 1 1976 - Dec 2 2025

1 Patents

#2 in Weifang, Shandong Province

#15,978 in China

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Weifang, Shandong Province, China
Forward Citations = 0

9 inventors:

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