METHOD AND APPARATUS FOR TRANSPORTATION OF HIGHLY CLEAN MATERIAL.
    91.
    发明公开
    METHOD AND APPARATUS FOR TRANSPORTATION OF HIGHLY CLEAN MATERIAL. 失效
    运输高清洁材料的方法和装置。

    公开(公告)号:EP0622841A4

    公开(公告)日:1994-11-09

    申请号:EP92924871

    申请日:1992-12-02

    申请人: OHMI TADAHIRO

    摘要: A method and apparatus for transportation of wafers from one stage to another in a manufacturing process while protecting clean silicon surfaces and thin films on them from contamination through the air. The apparatus includes a wafer container (101) having a gas inlet (103) and a gas outlet (112), an inert gas container (103) having an inert gas sealed therein, and a piping (114) for connecting the gas inlet (113) of the wafer container to the inert gas container (103) and for sending the inert gas in the inert gas container to the wafer container (114), and wafers are transported while the inside of the wafer container is constantly purged by introducing the inert gas.

    METHOD OF FORMING PASSIVE OXIDE FILM BASED ON CHROMIUM OXIDE AND STAINLESS STEEL
    92.
    发明公开
    METHOD OF FORMING PASSIVE OXIDE FILM BASED ON CHROMIUM OXIDE AND STAINLESS STEEL 失效
    METHOD FOR PRODUCING PASSIVE氧化膜基于铬氧化物和不锈钢

    公开(公告)号:EP0725160A4

    公开(公告)日:1994-11-07

    申请号:EP92923995

    申请日:1992-11-20

    申请人: OHMI TADAHIRO

    发明人: OHMI TADAHIRO

    CPC分类号: C23C8/18 C23C8/02

    摘要: A method of readily forming a passive oxide film based on chromium oxide characterized by subjecting stainless steel to electrolytic polishing, composite electrolytic polishing and fluidized abrasive polishing, baking the steel thus treated in an inactive gas to remove moisture from its surface, and heat treating the resultant steel at 300 to 600 DEG C in a gaseous atmosphere comprising hydrogen or a mixture thereof with an inactive gas and containing less than 4 ppm of oxygen or less than 500 ppb of moisture. An oxidized stainless steel characterized by comprising a stainless steel having a crystal grain number of 6 or above and, formed on the surface thereof, a passive oxide film based on chromium oxide, wherein the oxide film has a thickness of 5 nm or above and the atomic ratio of chromium to iron on the outermost layer of the film is 1 or above.

    METHOD AND APPARATUS FOR TREATING EXHAUST GAS
    97.
    发明公开
    METHOD AND APPARATUS FOR TREATING EXHAUST GAS 审中-公开
    方法和设备用于处理废气

    公开(公告)号:EP1716912A4

    公开(公告)日:2008-02-06

    申请号:EP05704075

    申请日:2005-01-25

    摘要: A method for treating an exhaust gas, which comprises the steps of introducing an exhaust gas being in an exited state in a facility for manufacture of a semiconductor device into a plasma treatment portion of a treating section under a reduced pressure, introducing the exhaust gas being maintained in an exited state by a plasma generating in the plasma treatment portion into a reactor in a removal reaction section, reacting the exhaust gas with a removing reaction agent comprised of particulate calcium oxide packed in the reactor and removing harmful gas components in the exhaust gas. The method may further include the step of supplying oxygen into the plasma treatment portion so as to subject the harmful gas components to oxidation decomposition in the presence of a plasma and then reacting the decomposed gas components with the removing reaction agent.