Invention Grant
- Patent Title: Method for recovering tungsten
- Patent Title (中): 钨回收方法
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Application No.: US12067336Application Date: 2006-09-20
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Publication No.: US07993614B2Publication Date: 2011-08-09
- Inventor: Koji Hagiya
- Applicant: Koji Hagiya
- Applicant Address: JP Tokyo
- Assignee: Sumitomo Chemical Company, Limited
- Current Assignee: Sumitomo Chemical Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Panitch Schwarze Belisario & Nadel LLP
- Priority: JP2005-273385 20050921
- International Application: PCT/JP2006/319091 WO 20060920
- International Announcement: WO2007/034972 WO 20070329
- Main IPC: C01G37/00
- IPC: C01G37/00
Abstract:
A method for recovering tungsten from a reaction mixture obtained by reacting an organic compound with hydrogen peroxide in the presence of a tungsten catalyst comprising blowing a gas into the reaction mixture to precipitate tungstic acid (WO3.H2O) and separating tungstic acid precipitated.
Public/Granted literature
- US20090148362A1 METHOD FOR RECOVERING TUNGSTEN Public/Granted day:2009-06-11
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