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    PRODUCTION OF SILICON CARBIDE
    13.
    发明申请
    PRODUCTION OF SILICON CARBIDE 审中-公开
    生产碳化硅

    公开(公告)号：WO1988004333A1

    公开(公告)日：1988-06-16

    申请号：PCT/GB1987000880

    申请日：1987-12-04

    Applicant: THE BRITISH PETROLEUM COMPANY P.L.C. ,  THWAITES, Michael, John

    Inventor： THE BRITISH PETROLEUM COMPANY P.L.C.

    IPC: C23C16/32

    CPC classification number: C23C16/325 ,  C23C16/0245 ,  C30B25/02 ,  C30B29/36

    Abstract: Crystalline beta silicon carbide is deposited on a compatible substract by subjecting a mixture of hydrocarbon vapour and a silane to a glow discharge at a partial pressure of hydrocarbon vapour and silane of not more than 1 Pa while maintaining the substrate at 600 DEG to 1000 DEG C.

    Abstract translation: 通过使碳氢化合物蒸气和硅烷的混合物在烃蒸气和硅烷的分压下以不高于1Pa的温度进行辉光放电，同时将基底保持在600℃至1000℃，将结晶β碳化硅沉积在相容的底物上 。

    MEMORY MATRIX
    14.
    发明申请
    MEMORY MATRIX 审中-公开
    记忆矩阵

    公开(公告)号：WO1988004096A1

    公开(公告)日：1988-06-02

    申请号：PCT/GB1987000814

    申请日：1987-11-17

    Applicant: THE BRITISH PETROLEUM COMPANY P.L.C. ,  DENYER, Peter, Brian ,  SABINE, Keith, Allen

    Inventor： THE BRITISH PETROLEUM COMPANY P.L.C.

    IPC: G11C11/34

    CPC classification number: G11C13/0009 ,  G11C2213/33 ,  G11C2213/79

    Abstract: An electrically programmable memory matrix comprises a plurality of memory cells of layered amorphous or microcrystalline semiconductor repeatably switchable between high and low conductance states by voltages of alternate polarity. For each cell there is a single row line and a pair of column lines. The matrix comprises write enable means and means for maintaining voltage difference between pairs of column lines below that sufficient to write to a cell in the absence of a write-enable signal.

    METHOD OF DIAMOND IDENTIFICATION
    16.
    发明申请
    METHOD OF DIAMOND IDENTIFICATION 审中-公开
    金刚石识别方法

    公开(公告)号：WO1986007457A1

    公开(公告)日：1986-12-18

    申请号：PCT/GB1986000340

    申请日：1986-06-12

    Applicant: THE BRITISH PETROLEUM COMPANY P.L.C. ,  GERRARD, Donald, Leslie

    Inventor： THE BRITISH PETROLEUM COMPANY P.L.C.

    IPC: G01N21/65

    CPC classification number: G01N21/65 ,  G01N21/87

    Abstract: A method for the identification of diamonds in which a sample (3) to be identified is placed in a beam of monochromatic laser radiation (2) of pre-determined wavelength. The scattered Raman radiation emitted from the sample (3) is passed through a filter (4) adapted to pass only scattered Raman radiation of frequency characteristic of a diamond. The filtered radiation is then detected by the human eye (5) or a photocell device.

    Abstract translation: 一种用于识别钻石的方法，其中将要识别的样品（3）放置在预定波长的单色激光辐射（2）的光束中。 从样品（3）发射的散射的拉曼辐射通过适于仅通过金刚石频率特性的散射拉曼辐射的滤光器（4）。 然后由人眼（5）或光电池装置检测经过滤的辐射。

    PROCESS FOR THE HYDRATION AND OLIGOMERISATION OF OLEFINS
    17.
    发明申请
    PROCESS FOR THE HYDRATION AND OLIGOMERISATION OF OLEFINS 审中-公开
    烯烃的水合和低级过程

    公开(公告)号：WO1986005776A1

    公开(公告)日：1986-10-09

    申请号：PCT/GB1986000182

    申请日：1986-03-27

    Applicant: THE BRITISH PETROLEUM COMPANY P.L.C. ,  ATKINS, Martin, Philip ,  GREGORY, Reginald ,  WESTLAKE, David, Jack

    Inventor： THE BRITISH PETROLEUM COMPANY P.L.C.

    IPC: C07C02/28

    CPC classification number: C07C29/04 ,  C07C2/28 ,  C07C41/05 ,  C07C2531/10 ,  C10L1/023 ,  C07C43/04 ,  C07C31/10 ,  C07C31/12

    Abstract: A product mixture containing oligomers of alkenes, ethers and optionally alcohols is prepared by the hydration and oligomerisation of the alkenes by passing the alkenes and water in a molar ratio of alkenes to water of about 3:1 to 90:1 under hydration conditions over an acid hydration catalyst, particularly a cation exchange resin. The process can be controlled so as to produce less than 0.5% by wt water in the liquid reaction product, at least 40% by wt of oligomers and less than 5% by wt of material of C12 and higher.

    Abstract translation: 通过在水合条件下将烯烃和水以摩尔比为3:1至90:1的烯烃和水通过烯烃和醚的水合和低聚制备含有烯烃，醚和任选的醇的低聚物的产物混合物， 酸性水合催化剂，特别是阳离子交换树脂。 可以控制该方法，以便在液体反应产物中产生小于0.5重量％的水，至少40重量％的低聚物和小于5重量％的C12和更高的材料。

    IMPRESSION MATERIAL
    19.
    发明申请
    IMPRESSION MATERIAL 审中-公开
    IMPRESSION材料

    公开(公告)号：WO1985003221A1

    公开(公告)日：1985-08-01

    申请号：PCT/GB1984000444

    申请日：1984-12-20

    Applicant: THE BRITISH PETROLEUM COMPANY P.L.C. ,  FISHER, Robert, Gerald ,  JAMES, Keith ,  PRING, Graham, Michael

    Inventor： THE BRITISH PETROLEUM COMPANY P.L.C.

    IPC: A61K06/10

    CPC classification number: A61K6/10

    Abstract: A two part impression material suitable for use as a dental impression material comprises a first part containing a product of the reaction of an alpha, beta-ethylenically unsaturated dicarboxylic acid anhydride, such as maleic anhydride, and a liquid polydiene resin, e.g. polybutadiene, and a second part containing a setting agent for the reaction product which setting agent is an alkoxylated fatty mono-amine or an alkoxylated fatty polyamine having from 2 to 30, preferably 5 to 15 moles of alkoxylate per mole of the fatty amine. The alkoxylate groups of the setting agent being one or more groups selected from the group comprising ethoxylate, propoxylate and butoxylate groups. A method of taking a dental impression using the reaction product of the first and second parts of the two part dental impression material is also disclosed.

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