首页
产品
黄页
商标
征信
会员服务
注册
登录
全部
|
企业名
|
法人/股东/高管
|
品牌/产品
|
地址
|
经营范围
发明名称
Process for separating niobium and tantalum from materials containing these metals
摘要
申请公布号
US2998298(A)
申请公布日期
1961.08.29
申请号
US19560600682
申请日期
1956.07.30
申请人
CIBA LIMITED
发明人
SCHELLER WALTER
分类号
C01G33/00
主分类号
C01G33/00
代理机构
代理人
主权项
地址
您可能感兴趣的专利
METHOD OF CONTINUOUSLY DEGASSING AND PACKING ONEESIDE GUSSET FOLDED THREEESIDE SEALED ARTICLE
METHOD AND DEVICE FOR MAKING ARTIFICIAL FLOWER
ADHERING OF EXPOSED SEWING SLOT OF UMBRELLA AND CLOTH
AUTOMATIC OPENING AND CLOSING APPARATUS OF CURTAIN AND LIKE
DEVICE FOR MARKING PLATE
IMPREGNATION BATH
METHOD OF MAKING ALLOY STEEL POWDER HAVING GOOD MOLDING PROPERTY
SOUNDDABSORBING PANEL FOR INTERIOR FACING
RECOVERY OF ZINC AND COPPER FROM COPPER-VEARING MATERIALS
THERMALLY FIXING DEVICE
PROFILE CASING CONSISTING OF TWO PORTIONS FOR MEASURING APPARATUS
AUDIOOVISUAL CARD REPRODUCING SYSTEM
PULSE TOOL FOR BONDING
METHOD OF LUBRICATING DENTAL HAND PIECE AND SMALL OILER USED THEREFOR
DENTAL HAND DRILL WITH CONTROLLER
METHOD OF PRODUCING BULB
METHOD OF AND APPARATUS FOR MULTIIPOLE ARC WELDING
CONTINUOUS CASTING METHOD OF HIGH GRADE STEEL
DRIVING CIRCUIT AND DRIVING METHOD OF DISPLAY DEVICES
EPITAXIAL GROWTH METHOD
