Invention Grant
- Patent Title: Fluorite production method
- Patent Title (中): 萤石生产方法
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Application No.: US13811357Application Date: 2011-06-30
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Publication No.: US09322954B2Publication Date: 2016-04-26
- Inventor: Takafumi Yamazaki , Yusuke Shiro , Masao Sekiguchi
- Applicant: Takafumi Yamazaki , Yusuke Shiro , Masao Sekiguchi
- Applicant Address: JP Tatebayashi
- Assignee: Nihon Kessho Kogaku Co., Ltd.
- Current Assignee: Nihon Kessho Kogaku Co., Ltd.
- Current Assignee Address: JP Tatebayashi
- Agency: The Webb Law Firm
- Priority: JP2010-164808 20100722
- International Application: PCT/JP2011/065026 WO 20110630
- International Announcement: WO2012/011373 WO 20120126
- Main IPC: C01D3/02
- IPC: C01D3/02 ; G02B1/02 ; C30B11/00 ; C30B29/12 ; C30B33/02
Abstract:
A fluorite with excellent laser durability is provided by devising a heat-treatment method for CaF2 crystal. A fluorite production method is proposed, wherein heat-treatment is carried out by providing, through compartment walls in the periphery of a fluorite crystal, a fluoride gas trap layer containing a fluoride gas-adsorbing material.
Public/Granted literature
- US20130115158A1 Fluorite Production Method Public/Granted day:2013-05-09
Information query
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