Method of plating a uniform copper layer on an apertured printed circuit board
    1.
    发明授权
    Method of plating a uniform copper layer on an apertured printed circuit board 失效
    在印刷电路板上铺设均匀铜层的方法

    公开(公告)号:US3634205A

    公开(公告)日:1972-01-11

    申请号:US3634205D

    申请日:1968-09-27

    Applicant: BUNKER RAMO

    CPC classification number: C25D3/38 Y10S205/92

    Abstract: A high-speed electrolytic copper plating bath containing an aqueous solution of copper fluoborate and fluoboric acid, and optionally, an alkali metal fluoride and a surface active agent is disclosed. With this bath, a smooth and ductile copper layer can be substantially evenly deposited onto the surfaces of an apertured object such as a printed circuit board.

    Abstract translation: 公开了含有氟硼酸铜和氟硼酸水溶液的高速电解铜电镀液,以及任选的碱金属氟化物和表面活性剂。 通过该浴,可以将光滑的延性铜层基本上均匀地沉积到诸如印刷电路板的有孔物体的表面上。

    Conformal coating stripping method and composition
    2.
    发明授权
    Conformal coating stripping method and composition 失效
    一致的涂层剥离方法和组合

    公开(公告)号:US3625763A

    公开(公告)日:1971-12-07

    申请号:US3625763D

    申请日:1968-12-04

    Applicant: BUNKER RAMO

    Inventor: MELILLO MANLIO B

    Abstract: A liquid composition for stripping resin coatings such as epoxy embedment or conformal coatings from substrates such as printed circuit boards. The composition is a substantially anhydrous combination of organic liquids comprising on a volume basis above about 60 percent of a halogenated hydrocarbon liquid, a minor amount below 12 percent but above 4 percent of an alcohol and below 5 percent but at least 1 percent of a ketone. The resin coating is contacted with the composition for a period sufficient to loosen and solvate said resin. The removal of the softened resin may be facilitated by brushing.

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