中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

22 records (took 0.023 seconds)

    1.
    发明专利
    未知

    公开(公告)号：DE69006609D1

    公开(公告)日：1994-03-24

    申请号：DE69006609

    申请日：1990-03-13

    Applicant: NGK INSULATORS LTD

    Inventor： KAJIHARA TAKEHIRO ,  OHASHI TOSHIO ,  MAEKAWA KOICHIRO

    IPC: H01L21/50 ,  H01L23/10

    Abstract: A ceramic lid (1) for sealing a semiconductor element and has a sealing surface for forming a seal with a ceramic package (6) housing a semiconductor (7) within a recess. A glass sealant is heated and hermetically seals said semiconductor element. The ceramic lid (1) is made of alumina of high purity and a glass sealing aid is applied to the sealing surface and is pretreated at a higher temperature than the heating temperature for sealing said semiconductor element, before the hermetic sealing of the semiconductor element in the ceramic package. This improves the strength of the seal and allows a smaller seal area.

    3.
    发明专利
    未知

    公开(公告)号：DE69006609T2

    公开(公告)日：1994-06-30

    申请号：DE69006609

    申请日：1990-03-13

    Applicant: NGK INSULATORS LTD

    Inventor： KAJIHARA TAKEHIRO ,  OHASHI TOSHIO ,  MAEKAWA KOICHIRO

    IPC: H01L21/50 ,  H01L23/10

    Abstract: A ceramic lid (1) for sealing a semiconductor element and has a sealing surface for forming a seal with a ceramic package (6) housing a semiconductor (7) within a recess. A glass sealant is heated and hermetically seals said semiconductor element. The ceramic lid (1) is made of alumina of high purity and a glass sealing aid is applied to the sealing surface and is pretreated at a higher temperature than the heating temperature for sealing said semiconductor element, before the hermetic sealing of the semiconductor element in the ceramic package. This improves the strength of the seal and allows a smaller seal area.

    PRODUCTION OF CYLINDRICAL SINTERED PRODUCT
    9.
    发明专利
    PRODUCTION OF CYLINDRICAL SINTERED PRODUCT 失效

    公开(公告)号：JPH04139068A

    公开(公告)日：1992-05-13

    申请号：JP26023690

    申请日：1990-09-28

    Applicant: NGK INSULATORS LTD

    Inventor： OHASHI TOSHIO

    IPC: C04B35/64 ,  B28B21/18 ,  B28B21/36

    Abstract: PURPOSE:To prevent the curving of a long-sized cylindrical molding body and to obtain cylindrical sintered products by hanging this molding perpendicularly downward by utilizing the supporting means formed in a part of the molding and cutting out the part made into a product of the long-sized cylindrical sintered body obtd. in such a manner. CONSTITUTION:The cylindrical sintered products are produced by the following three stages: (1) The stage for producing the long-sized cylindrical molding body 1 by packing raw material powder 14 into the molding space 13 in a forming mold (11: a rubber mold, 12: a core mold), and subjecting the powder to pressurized molding (15: rubber press plate); (2) the stage for forming the long-sized cylindrical sintered body by providing a through-hole 6 in a supporting means 4 (e.g. cylindrical supporting part) having the outside diameter smaller than the outside diameter of the part 3 (between A to B), which is made into the product and is ought to be the product of this long-sized cylindrical molding 1, inserting the long-sized body 7 for supporting in this through-hole 6, imposing both ends of this long-sized body 6 for supporting on a supporting base 8, orienting the long-sized body 7 for supporting in nearly a horizontal direction, hanging the part 3 which is made into the product and is positioned and fixed relative to the supporting means 4 perpendicularly downward of the supporting means 4 and heating the long-sized cylindrical molding 1; (3) the stage for forming the cylindrical sintered body by cutting the part 3 which is made into the product of the long-sized cylindrical sintered products.

Patent Agency Ranking