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
Optic zone phase channels
摘要
An ophthalmic contact lens with a phase plate and a pure refractive portion within its optic zone. The invention embraces an ophthalmic contact lens of the Cohen lens design with a phase plate and a pure refractive portion within its optic zone.
申请公布号
US5056908(A)
申请公布日期
1991.10.15
申请号
US19890438321
申请日期
1989.11.20
申请人
COHEN, ALLEN L.
发明人
COHEN, ALLEN L.
分类号
G02B5/18;G02C7/04
主分类号
G02B5/18
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Wafer product and process of manufacture
Method of removing impurities from polymers utilizing facilitated ion exchange
Television control interface with electronic guide
Process for preparing refrigerated meals
Pane setting element, especially glass sun roof for vehicles
Playable optical picture disc
A system and method for distributed collaborative drawing
Ouabain immunoassay and kit and ouabain labeled with i125 or fluorescent label
Method and system for establishing handset-dependent normalizing models for speaker recognition
Tripeptide and tetrapeptide pharmaceutical compounds
Mobile station handoff between a spread spectrum communications system and a frequency division communications system
Method for making soft magnetic parts from particulate ferrous material, and parts made therefrom
An absorbent article incorporating liquid barriers with sealing coating
Continuous multi-sheet stationery
Biologically degradable leather
Protective barrier composition
Rolled and folded napkins and method of making
Motor drive
Snowboard binding attachment
Application messaging system