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Patent Agency Ranking
公开(公告)号：US10011890B2
公开(公告)日：2018-07-03
申请号：US14775824
申请日：2014-03-06
Applicant: A.L.M.T. Corp.
Inventor： Takeshi Itakura , Akihiko Ikegaya , Yoshiharu Yamamoto
CPC classification number: C22B34/36 , C01G41/00 , C22B7/00 , C22B7/001 , Y02P10/214 , Y02P10/234
Abstract: A method of producing sodium tungstate of this invention including allowing cemented carbide scrap containing tungsten to react with a molten salt containing sodium sulfate and having added thereto a metal oxide, to thereby obtain sodium tungstate.
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公开(公告)号：US09512504B2
公开(公告)日：2016-12-06
申请号：US14139627
申请日：2013-12-23
Inventor： Yoshiharu Yamamoto , Kazuo Sasaya , Takayuki Fudo , Akira Nakano , Syunsuke Yamanaka , Takahisa Iguchi , Fumiatsu Sato , Akihiko Ikegaya
IPC: C22B34/36 , B01J19/28 , B01J8/10 , C01G41/00 , C01G41/02 , C22B7/00 , C01G23/00 , C01G35/00 , C01G37/02 , C01G53/00 , C01G37/14 , C01G51/00
CPC classification number: C22B34/36 , B01J8/10 , B01J19/28 , B01J2219/0004 , B01J2219/00132 , B01J2219/00157 , C01G23/005 , C01G35/00 , C01G37/02 , C01G37/14 , C01G41/00 , C01G41/003 , C01G41/02 , C01G51/42 , C01G53/42 , C01P2002/72 , C22B7/001 , C22B7/006 , Y02P10/214 , Y02P10/234 , Y02W30/54
Abstract: Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method.
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3.发明申请METHOD FOR PRODUCING SODIUM TUNGSTATE, METHOD FOR COLLECTING TUNGSTEN, APPARATUS FOR PRODUCING SODIUM TUNGSTATE, AND METHOD FOR PRODUCING SODIUM TUNGSTATE AQUEOUS SOLUTION 有权用于生产钨酸钠的方法，用于收集钨酸盐的方法，用于生产黄铁矿的方法，以及用于生产黄铁矿水溶液的方法公开(公告)号：US20140112847A1
公开(公告)日：2014-04-24
申请号：US14139598
申请日：2013-12-23
Inventor： Yoshiharu Yamamoto , Kazuo Sasaya , Takayuki Fudo , Akira Nakano , Syunsuke Yamanaka , Takahisa Iguchi , Fumiatsu Sato , Akihiko Ikegaya
IPC: C22B34/36
CPC classification number: C22B34/36 , B01J8/10 , B01J19/28 , B01J2219/0004 , B01J2219/00132 , B01J2219/00157 , C01G23/005 , C01G35/00 , C01G37/02 , C01G37/14 , C01G41/00 , C01G41/003 , C01G41/02 , C01G51/42 , C01G53/42 , C01P2002/72 , C22B7/001 , C22B7/006 , Y02P10/214 , Y02P10/234 , Y02W30/54
Abstract: Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method.
Abstract translation: 提供一种通过供给由硝酸钠或亚硝酸钠制成的氧化剂以使含钨材料和氧化剂在含氧气氛中相互接触从而连续产生反应产物来生产钨酸钠的方法; 采用该方法收集钨的方法; 以及生产钨酸钠的装置。 还提供了一种生产钨酸钠水溶液的方法，其中将还原剂引入含有上述反应产物的熔体中，然后溶解在水中; 以及使用该方法收集钨的方法。
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4.发明授权公开(公告)号：US09249479B2
公开(公告)日：2016-02-02
申请号：US14139598
申请日：2013-12-23
Inventor： Yoshiharu Yamamoto , Kazuo Sasaya , Takayuki Fudo , Akira Nakano , Syunsuke Yamanaka , Takahisa Iguchi , Fumiatsu Sato , Akihiko Ikegaya
IPC: C22B34/36 , C01G41/00 , C01G41/02 , C22B7/00 , B01J8/10 , C01G23/00 , C01G35/00 , C01G37/02 , C01G53/00 , C01G37/14 , C01G51/00
CPC classification number: C22B34/36 , B01J8/10 , B01J19/28 , B01J2219/0004 , B01J2219/00132 , B01J2219/00157 , C01G23/005 , C01G35/00 , C01G37/02 , C01G37/14 , C01G41/00 , C01G41/003 , C01G41/02 , C01G51/42 , C01G53/42 , C01P2002/72 , C22B7/001 , C22B7/006 , Y02P10/214 , Y02P10/234 , Y02W30/54
Abstract: Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method.
Abstract translation: 提供一种通过供给由硝酸钠或亚硝酸钠制成的氧化剂以使含钨材料和氧化剂在含氧气氛中相互接触从而连续产生反应产物来生产钨酸钠的方法; 采用该方法收集钨的方法; 以及生产钨酸钠的装置。 还提供了一种生产钨酸钠水溶液的方法，其中将还原剂引入含有上述反应产物的熔体中，然后溶解在水中; 以及使用该方法收集钨的方法。
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公开(公告)号：US20140119998A1
公开(公告)日：2014-05-01
申请号：US14139627
申请日：2013-12-23
Inventor： Yoshiharu Yamamoto , Kazuo Sasaya , Takayuki Fudo , Akira Nakano , Syunsuke Yamanaka , Takahisa Iguchi , Fumiatsu Sato , Akihiko Ikegaya
IPC: C22B34/36
CPC classification number: C22B34/36 , B01J8/10 , B01J19/28 , B01J2219/0004 , B01J2219/00132 , B01J2219/00157 , C01G23/005 , C01G35/00 , C01G37/02 , C01G37/14 , C01G41/00 , C01G41/003 , C01G41/02 , C01G51/42 , C01G53/42 , C01P2002/72 , C22B7/001 , C22B7/006 , Y02P10/214 , Y02P10/234 , Y02W30/54
Abstract: Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method.
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