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    SOL-GEL PROCESS FOR THE PRODUCTION OF OPTICAL FIBER PREFORMS
    1.
    发明申请
    SOL-GEL PROCESS FOR THE PRODUCTION OF OPTICAL FIBER PREFORMS 审中-公开
    用于生产光纤预制件的溶胶凝胶工艺

    公开(公告)号：WO2003013211A2

    公开(公告)日：2003-02-20

    申请号：PCT/EP2002/004371

    申请日：2002-04-30

    Applicant: NOVARA TECHNOLOGY S.R.L.

    Inventor： COSTA, Lorenzo ,  COSTA, Fulvio ,  CREPALDI, Matteo

    IPC: C03B19/12 ,  C03B37/016

    CPC classification number: C03C3/04 ,  C03B19/12 ,  C03B37/016 ,  C03C13/00

    Abstract: Sol-gel process for the production of optical fiber preforms or overcladdings by preparing a sol, gelling the sol, drying the wet gel to a dry porous gel and densifying the dry gel to fully dense glass, wherein during the calcination treatment from 350 °C to 900 °C to remove organic impurities in the dry gel, it is carried out at least one reduced-pressure phase at a pressure comprised between about 0.01 and 0.5 bar.

    Abstract translation: 通过制备溶胶，凝胶化溶胶，将湿凝胶干燥成干多孔凝胶并将干凝胶致密化成完全致密玻璃的溶胶 - 凝胶法，其中在350℃的煅烧处理 至900℃以除去干凝胶中的有机杂质，在约0.01至0.5巴之间的压力下进行至少一个减压相。

    OPTICAL ARTICLES AND SOL-GEL PROCESS FOR THEIR MANUFACTURE
    2.
    发明申请
    OPTICAL ARTICLES AND SOL-GEL PROCESS FOR THEIR MANUFACTURE 审中-公开
    光学文章及其制造方法

    公开(公告)号：WO2004083137A1

    公开(公告)日：2004-09-30

    申请号：PCT/EP2004/002327

    申请日：2004-03-08

    Applicant: NOVARA TECHNOLOGY S.R.L. ,  COSTA, Fulvio ,  COSTA, Lorenzo ,  GINI, Lucia

    Inventor： COSTA, Fulvio ,  COSTA, Lorenzo ,  GINI, Lucia

    IPC: C03B19/12

    CPC classification number: C03B19/12 ,  Y10T428/24802

    Abstract: An optical article, having an almost complete isotropy and dimensions equal to or lower than 500 µm, is prepared by a sol-gel procedure comprising a preliminary step wherein the mould is filled cold with a sol containing the desired oxide precursors, sol gelation, gel drying, removal of the gel from the mould and the subsequent miniaturization of the dried gel. The optical article can be used for optic telecommunications.

    Abstract translation: 具有几乎完全各向同性和尺寸等于或小于500μm的光学制品通过包括初步步骤的溶胶 - 凝胶法制备，其中模具用含有所需氧化物前体的溶胶，溶胶凝胶化，凝胶 干燥，从模具中除去凝胶，随后干燥凝胶的小型化。 光学制品可用于光通信。

    SOL-GEL PROCESS FOR PRODUCING A DRIED GEL ADHERING TO AN INSERT AND PRODUCTS OBTAINABLE THEREBY
    4.
    发明申请
    SOL-GEL PROCESS FOR PRODUCING A DRIED GEL ADHERING TO AN INSERT AND PRODUCTS OBTAINABLE THEREBY 审中-公开
    用于生产干燥凝胶的溶胶 - 凝胶方法

    公开(公告)号：WO2000053536A1

    公开(公告)日：2000-09-14

    申请号：PCT/IT2000/000076

    申请日：2000-03-08

    Applicant: NOVARA TECHNOLOGY S.R.L. ,  COSTA, Fulvio ,  COSTA, Pierpaolo ,  COSTA, Lorenzo

    Inventor： COSTA, Fulvio ,  COSTA, Pierpaolo ,  COSTA, Lorenzo

    IPC: C03B37/016

    CPC classification number: C03B19/12 ,  C03B37/016

    Abstract: A sol-gel process is described that allows dry gels to be produced, and where necessary, the corresponding dense vitreous bodies, around an incompressible insert. A particular feature of the process is the step of rotating a container holding the sol and incompressible insert throughout the gelling step under such conditions that a wet gel adhering to the insert is produced, which is then dried. The process is useful particularly for the production of preforms for optical fibers, which are also claimed.

    Abstract translation: 描述了溶胶 - 凝胶方法，其允许在不可压缩的插入物周围产生干凝胶，并且必要时允许相应致密的玻璃体。 该方法的一个特别的特征是在固化溶胶和不可压缩嵌入物的整个凝胶化步骤中旋转容器，这样的条件使得粘附在插入物上的湿凝胶被干燥。 该方法特别用于生产用于光纤的预成型件，这也是要求保护的。

    GLASSY FILM SUITABLE TO THE METHOD SURFACE COATINGS AND COATED ARTICLES OBTAINED THEREBY
    5.
    发明申请
    GLASSY FILM SUITABLE TO THE METHOD SURFACE COATINGS AND COATED ARTICLES OBTAINED THEREBY 审中-公开
    适用于方法表面涂层和涂层物品的玻璃膜

    公开(公告)号：WO2006002648A1

    公开(公告)日：2006-01-12

    申请号：PCT/EP2004/006869

    申请日：2004-06-25

    Applicant: NOVARA TECHNOLOGY S.R.L. ,  COSTA, Fulvio ,  GINI, Lucia ,  GIARDINO, Vincenzo ,  COSTA, Lorenzo

    Inventor： COSTA, Fulvio ,  GINI, Lucia ,  GIARDINO, Vincenzo ,  COSTA, Lorenzo

    IPC: C03C8/08

    CPC classification number: C03C8/08 ,  C03C8/20 ,  C03C2207/02 ,  C03C2207/04

    Abstract: The present invention relates to glassy inorganic films, characterized by a high chemical stability and a high adhesion, containing, among the others, titanium dioxide, employable to coat metal surfaces characterized by the presence of oxides, particularly stainless steel sheets. The coated structures obtained thereby, which are the second object of the present invention, are used to build many articles such as pipes, reactors, exchangers, containers, and so on. With reference to the peculiar case of stainless steel structures coated by the above film, these ones can be used in the food industry since that film coated article shows specific and very high photobactericide properties.

    Abstract translation: 本发明涉及玻璃状无机膜，其特征在于具有高的化学稳定性和高粘合性，其中包括二氧化钛，其可用于涂覆金属表面，其特征在于存在氧化物，特别是不锈钢板。 作为本发明的第二个目的的由此获得的涂覆结构用于构建诸如管道，反应器，交换器，容器等的许多制品。 关于通过上述膜涂覆的不锈钢结构的特殊情况，这些可以用于食品工业中，因为该薄膜包衣制品具有特异性和非常高的杀光剂性质。

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