Electroless nickel plating method
    2.
    发明授权
    Electroless nickel plating method 失效
    电镀镍镀层法

    公开(公告)号:US3690944A

    公开(公告)日:1972-09-12

    申请号:US3690944D

    申请日:1970-03-10

    Applicant: RCA CORP

    Inventor: FELDSTEIN NATHAN

    CPC classification number: C23C18/36

    Abstract: A METHOD FOR ELECTROLESSLY PLATING NICKEL FROM A BATH COMPRISING (I) A NICKEL SALT; (II) A NICKEL ION COMPLEXING AGENT; (III) A SOURCE OF HYDROPHOSPHITE IONS; AND (IV) AMMONIUM HYDROXIDE, IN WHICH THE MOLAR CONCENTRATION RATIO OF NICKEL TO HYPOPHOSPHITE IONS IS LESS THAN 0.2. THE BATH EXHIBITS A PLATING RATE SUBSTANTIALLY INDEPENDENT OF HYPOPHOSPHITE ION CONCENTRATION.

    Method of preparing a substrate for depositing a metal on selected portions thereof
    4.
    发明授权
    Method of preparing a substrate for depositing a metal on selected portions thereof 失效
    制备用于在其选定部分上沉积金属的基板的方法

    公开(公告)号:US3672925A

    公开(公告)日:1972-06-27

    申请号:US3672925D

    申请日:1970-10-02

    Applicant: RCA CORP

    Inventor: FELDSTEIN NATHAN

    Abstract: STRATE AND MASKING FILM ARE NEXT TREATED WITH A CATALYTIC ACTIVATING SOLUTION, AND A THIN LAYER OF THE CATALYST IS DEPOSITED ONLY ON THE SENSITIZED SELECTED PORTIONS OF THE SUBSTRATE SURFACE.

    A METHOD OF PREPARING A SUBSTRATE FOR THE DEPOSITION OF A METAL ON SELECTED PORTIONS OF THE SUBSTRATE SURFACE BY ELECTROLESS PLATING, IN THE PRESENCE OF A CATALYST COMPRISES FIRST COVERING THE UNSELECTED PORTIONS OF THE SUBSTRATE SURFACE WITH A MASKING FILM THAT INCLUDES AN OXIDIZING AGENT. THE SUBSTRATE, INCLUDING THE MASKING FILM, IS THEN TREATED WITH A SENSITIZING SOLUTION AND HEATED TO CAUSE THE OXIDIZING AGENT TO OXIDIZE, AND DESENSITIZE, THE SENSITIZING SOLUTION THAT IS ADSORBED ON THE MASKING FILM, RENDERING THE MASKING FILM INCAPABLE OF ACCEPTING A CATALYST. THE SUB-

    Method of making a patterned metal film article
    5.
    发明授权
    Method of making a patterned metal film article 失效
    制作图案金属薄膜的方法

    公开(公告)号:US3619285A

    公开(公告)日:1971-11-09

    申请号:US3619285D

    申请日:1969-12-10

    Applicant: RCA CORP

    Inventor: FELDSTEIN NATHAN

    CPC classification number: H05K3/20 H05K3/182

    Abstract: A method of making a patterned metal film article comprising depositing an organic resist material on the surface of a relatively nonporous insulating substrate in the pattern desired for the metal, leaving portions of the substrate surface exposed, treating both the exposed substrate surface portions and the resist surface with a sensitizer and with an activator for electroless deposition of a metal on both these surfaces, treating both said surfaces with an etching solution so that only the exposed substrate surface portions become deactivated, and treating both the surfaces with an electroless metal plating solution such that metal deposits only on the resist surface.

    Method of making a semi-transparent photomask
    6.
    发明授权
    Method of making a semi-transparent photomask 失效
    制作半透明光掩模的方法

    公开(公告)号:US3922420A

    公开(公告)日:1975-11-25

    申请号:US47509474

    申请日:1974-05-31

    Applicant: RCA CORP

    CPC classification number: G03F1/54 G03F1/50 Y10T428/24926

    Abstract: A method of making a semi-transparent photomask of the iron oxide type comprising depositing a thin film of nickel or of a nickel alloy on a glass substrate, forming on the nickel or nickel alloy film a pattern of a resist which is the negative of the desired photomask, electrolytically depositing a layer of iron on the areas of the alloy film not covered by the resist, removing the resist and heating the assembly in an oxidizing atmosphere to convert the iron layer to iron oxide and also to convert the nickel or nickel alloy film to transparent oxides, at the same time providing improved adherence.

    Abstract translation: 一种制造氧化铁半透明光掩模的方法,包括在玻璃基板上沉积镍或镍合金薄膜,在镍或镍合金膜上形成抗蚀剂的图案,该图案为 在未被抗蚀剂覆盖的合金膜的区域上电解沉积铁层,除去抗蚀剂并在氧化气氛中加热组件以将铁层转化为氧化铁,并将镍或镍合金 膜到透明氧化物,同时提供改善的附着力。

    Method for making a photomask
    10.
    发明授权
    Method for making a photomask 失效
    制作光罩的方法

    公开(公告)号:US3877810A

    公开(公告)日:1975-04-15

    申请号:US30459472

    申请日:1972-11-08

    Applicant: RCA CORP

    Inventor: FELDSTEIN NATHAN

    CPC classification number: G03F1/54

    Abstract: A photomask which comprises a transparent, smooth glass plate and a pattern of opaque, light-absorbing areas of oxides of cobalt on a surface of the plate is obtained by sequentially coating the glass plate with layers of cobalt and a photoresist, exposing the photoresist, developing the photoresist to expose areas of cobalt, etching away the exposed areas of cobalt, and heating the remaining areas of cobalt in the presence of oxgen to convert the same to cobalt oxides.

    Abstract translation: 通过依次在玻璃板上涂覆钴和光致抗蚀剂层,曝光光致抗蚀剂,获得包含透明光滑玻璃板的光掩模和在该表面上的钴氧化物的不透明光吸收区域的图案, 显影光致抗蚀剂以暴露钴的区域,蚀刻钴的暴露区域,并在氧存在下加热钴的剩余区域以将其转化成钴氧化物。

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