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
Secure photomask with blocking aperture
摘要
A secure photomask including a substrate having one or more pattern layers formed thereon and a blocking aperture disposed below the one or more pattern layers that prevents at least one of unauthorized use and copying of the photomask.
申请公布号
US7851110(B2)
申请公布日期
2010.12.14
申请号
US20080105992
申请日期
2008.04.18
申请人
PHOTRONICS, INC.
发明人
PROGLER CHRISTOPHER J.
分类号
G03F1/00
主分类号
G03F1/00
代理机构
代理人
主权项
地址
您可能感兴趣的专利
PROCESS OF PREPARING CANDY COATED CONFECTION
ABRASIVE ARTICLE AND METHOD OF MANUFACTURING THE SAME
ULTRA HIGH FREQUENCY OSCILLATOR
MACHINING OF METALS
ENGINE DRIVE
CLOTHES HORSE
Process for preparing gluten sulfate and salts thereof
Method for making and maintaining an impression of the shape of an object
Crankshaft and method of making same
Dental x-ray film package
Loading tray
Procédé et dispositif pour la mesure instantanée de la température d'un fil magnétique mobile
Appareil enregistreur perfectionné
Improvements relating to the manufacture of organic pigments and moulding powders
Apparatus for facilitating typing on paper strip
Improvements in pulsators
Improvements in or relating to the construction of floors
Improvements relating to cement
élément préfabriqué pour la construction
Perfectionnements aux râpes tournantes