Chengdu
China
5
2016-06-02
The entities that hold a legal rights for patent applications filed by inventor WEI Shifa:
Shifa WEI from Chengdu, CN has applied for patents for these inventions. The list has both pending applications and granted patents:
Rotary kiln for reducing phosphate ore in kiln phosphoric acid process and method for solving ring forming in kiln tail in kiln phosphoric acid process
#2 | 2016-06-02Phosphorus absorption by hydration and fluorine recovery for fume exiting kiln in kiln phosphoric acid process
#3 | 2016-06-02Apparatus for preparing phosphoric acid from fume exiting the kiln in a kiln phosphoric acid process
#4 | 2016-06-02Method for mass production of phosphoric acid with rotary kiln
#5 | 2016-03-24Device and process for fluorine recovery from smoke after phosphorus absorption by hydration in kiln process for production of phosphoric acid
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