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    CONTACT PROBE ARRANGEMENT
    1.
    发明专利
    CONTACT PROBE ARRANGEMENT 审中-公开

    公开(公告)号：JP2002098713A

    公开(公告)日：2002-04-05

    申请号：JP2001218755

    申请日：2001-07-18

    Applicant: IBM

    Inventor： BAYER THOMAS ,  GRESCHNER JOHANN DR ,  MEISSNER KLAUS ,  STEINER WERNER ,  STOEHR ROLAND

    IPC: G01R31/26 ,  G01R1/073 ,  G01R31/28 ,  H01L21/66

    Abstract: PROBLEM TO BE SOLVED: To provide a contact probe arrangement 1 for connecting electrically a test device to circular contact pads 2 of a device 3 to be tested. SOLUTION: The contact probes 4 are pressed perpendicularly onto the contact pads 2 in order to realize a low contact resistance, and can be bent in the transverse direction in regions 6a, 6b where the contact probes are installed in order to adjust the difference of heights of the contact pads 2 caused by a non-uniform surface of the device 3 to be tested. The contact probes 4 are installed in a guide groove 5. The guide groove 5 and the regions 6a, 6b are formed on a plane parallel to the plane of a guide groove 7, and covered with a protection plate. This constitution assures a contact probe array having a very high density. This kind of contact probe array can be used, for example, for detecting open and short in an electric circuit array of a microelectronic composite device.

    MAGNETIC DISC AND PROCESS FOR PRODUCING IT
    2.
    发明专利
    MAGNETIC DISC AND PROCESS FOR PRODUCING IT 未知

    公开(公告)号：DE3473958D1

    公开(公告)日：1988-10-13

    申请号：DE3473958

    申请日：1984-10-31

    Applicant: IBM DEUTSCHLAND ,  IBM

    Inventor： BANDARA UPOLI DR ,  HINKEL HOLGER DR ,  STEINER WERNER ,  TRIPPEL GERHARD DR

    IPC: G11B5/708 ,  G11B5/712

    Abstract: In a magnetic disc consisting of a magnetic layer comprising a binder, magnetic particles, e.g. gamma-Fe2O3, and particles of an abrasion-resistant material, on a substrate, the abrasion-resistant particles are encased in a layer which reinforces the bonding to the binder. Pref. the dia. of the abrasion-resistant particles (I) is considerably less than the thickness of the magnetic layer. (I) consist of a hard ceramic, pref. Al2O3, SiC or Si nitride, and the encasing layer is of SiO2/Al2O3; or (I) may be a hard oxide, e.g. Al2O3, with OH gps. on the particle surfaces, and the encasing layer is of 'Teflon' (RTM). The 'Teflon' casing may be bonded chemically to (I) through a siloxane bridge and opt. an initiator residue, and to the binder, consisting of an epoxy resin, a polyurethane or a melamine resin, through an amine bridge.

    DEVICE TO DETERMINE THE PROPERTIES OF MAGNETIC PARTICLE DISPERSIONS
    3.
    发明专利
    DEVICE TO DETERMINE THE PROPERTIES OF MAGNETIC PARTICLE DISPERSIONS 未知

    公开(公告)号：DE3275441D1

    公开(公告)日：1987-03-19

    申请号：DE3275441

    申请日：1982-09-22

    Applicant: IBM DEUTSCHLAND ,  IBM

    Inventor： BRUNSCH ARWED DR DIPL PHYS ,  STEINER WERNER ,  TRIPPEL GERHARD DR DIPL PHYS

    IPC: G01N27/72 ,  G01N27/74 ,  G01R33/12 ,  G01R33/16 ,  G01N27/76

    Abstract: For characterizing coating compositions with magnetic particles the coating composition is subjected to an alternating magnetic field of variable frequency. The field induced by the coating composition after energization is recorded, and thus the susceptibility of the coating composition is measured. Depending on the variable frequency, conclusions can be made regarding the degree of dispersion, particle density, and viscosity of the coating composition. The variable frequency is between 1 and 100 cps, and the field intensity of the energizing field should be lower than 10 Oerstedt. The coating composition is fluid or stagnant in a pipe *1, 11 which is surrounded by field coil and measuring coil.

    4.
    发明专利
    未知

    公开(公告)号：FR2740224A1

    公开(公告)日：1997-04-25

    申请号：FR9612844

    申请日：1996-10-15

    Applicant: IBM

    Inventor： BAYER THOMAS ,  MEISSNER KLAUS ,  STOHR ROLAND ,  GRESCHNER JOHANN ,  STEINER WERNER

    IPC: G01R1/073 ,  G01R31/28 ,  H01L21/66

    Abstract: The invention relates to a contact probe arrangement for electrically connecting a test system with contact pads of a device to be tested. The contact probes are located in guide grooves. The guide grooves as well as areas are provided in a plane parallel to the surface of a guide plate and are covered by a protective plate. The contact probes may bend out laterally into the respective areas. This assures a very dense contact probe array. Contact probe arrays of this type may be used, for example, for detecting opens and shorts in integrated circuits or semiconductor chips. The invention overcomes the problem of adjusting for height differences in the contact pads caused by an uneven surface of the device to be tested.

    METHODS AND ARRANGEMENTS FOR CHARACTERIZING MAGNETIC COATING COMPOSITIONS AS WELL AS IMPROVING MAGNETIC PARTICLE DISPERSIONS
    5.
    发明专利
    METHODS AND ARRANGEMENTS FOR CHARACTERIZING MAGNETIC COATING COMPOSITIONS AS WELL AS IMPROVING MAGNETIC PARTICLE DISPERSIONS 未知

    公开(公告)号：CA1267047A

    公开(公告)日：1990-03-27

    申请号：CA511437

    申请日：1986-06-12

    Applicant: IBM

    Inventor： BRUNSCH ARWED ,  STEINER WERNER ,  TRIPPEL GERHARD

    IPC: G11B5/70 ,  G01N27/74 ,  G01R33/12 ,  G11B5/84 ,  H01F1/28 ,  H01F41/14 ,  H01F41/26

    Abstract: METHODS AND ARRANGEMENTS FOR CHARACTERIZING MAGNETIC COATING COMPOSITIONS AS WELL AS IMPROVING MAGNETIC PARTICLE DISPERSIONS A method and an arrangement is provided for characterizing magnetic coating compositions that contain magnetic particles dispersed in a solvent resin matrix. The probe material is subjected to an alternating magnetic field and vertically thereto to a constant magnetic field of appropriate field strength and duration. Via a measuring coil the induced signal in the probe material is monitored and different characteristics, preferably the degree of dispersion, are measured by measuring the magnetic susceptibility of the coating material. By applying a constant magnetic field the degree of dispersion can be changed at least for a certain time. The method and arrangement of the present invention can be incorporated in an in-line system into a coating apparatus to monitor the magnetic characteristica of the coating material as well as to improve and maintain such improved characteristics.

    MAGNETIC RECORD CARRIER AND METHOD OF MAKING IT
    6.
    发明专利
    MAGNETIC RECORD CARRIER AND METHOD OF MAKING IT 未知

    公开(公告)号：CA1251860A

    公开(公告)日：1989-03-28

    申请号：CA500846

    申请日：1986-01-31

    Applicant: IBM

    Inventor： BANDARA UPALI ,  HOMOLA ANDREW M ,  STEINER WERNER ,  TRIPPEL GERHARD

    IPC: C09D5/23 ,  C09D163/00 ,  C09D177/00 ,  G11B5/706 ,  G11B5/712 ,  G11B5/845 ,  G11B5/842

    Abstract: MAGNETIC RECORD CARRIER AND METHOD OF MAKING IT The magnetic record carrier consists of a substrate and a magnetic coating which comprises a binder and substantially non-aggregated iron particles. The iron particles can have a coating of SiO2, and can be available either as a thin layer covered with the binder, or homogeneously dispersed in the binder. For making the magnetic record carrier, coated or uncoated iron oxide particles are applied onto the substrate and subsequently reduced in a hydrogen-containing atmosphere at temperatures between 220 and 350.degree.C. In the production where the iron particles are distributed in the binder, reduction takes place after a dispersion containing the binder, the iron oxide particles and a solvent has been spun onto the substrate and cured. In the production where the iron oxide particles form a thin layer, reduction is effected after the coated iron oxide particles have been applied onto the substrate as a mono-layer. It is only then that a dispersion containing the binder and a solvent is applied and cured.

    7.
    发明专利
    未知

    公开(公告)号：DE19538792C2

    公开(公告)日：2000-08-03

    申请号：DE19538792

    申请日：1995-10-18

    Applicant: IBM

    Inventor： BAYER THOMAS ,  GRESCHNER JOHANN ,  MEISSNER KLAUS ,  STEINER WERNER ,  STOEHR ROLAND

    IPC: G01R1/073 ,  G01R31/28 ,  H01L21/66 ,  H01R11/18

    Abstract: The invention relates to a contact probe arrangement for electrically connecting a test system with contact pads of a device to be tested. The contact probes are located in guide grooves. The guide grooves as well as areas are provided in a plane parallel to the surface of a guide plate and are covered by a protective plate. The contact probes may bend out laterally into the respective areas. This assures a very dense contact probe array. Contact probe arrays of this type may be used, for example, for detecting opens and shorts in integrated circuits or semiconductor chips. The invention overcomes the problem of adjusting for height differences in the contact pads caused by an uneven surface of the device to be tested.

    ARRANGEMENT FOR CHARACTERIZING MAGNETIC PARTICLE DISPERSIONS
    9.
    发明专利
    ARRANGEMENT FOR CHARACTERIZING MAGNETIC PARTICLE DISPERSIONS 未知

    公开(公告)号：CA1231379A

    公开(公告)日：1988-01-12

    申请号：CA433476

    申请日：1983-07-28

    Applicant: IBM

    Inventor： BRUNSCH ARWED ,  STEINER WERNER ,  TRIPPEL GERHARD

    IPC: G01N27/72 ,  G01N27/74 ,  G01R33/12 ,  G01R33/16 ,  G01N27/76

    Abstract: ARRANGEMENT FOR DETERMINING CHARACTERISTICS OF MAGNETIC PARTICLE DISPERSIONS For determining characteristics of coating compositions including magnetic particles, the coating composition is subjected to an alternating magnetic field of selectively variable frequency. The field induced by the coating composition after energization is recorded, and thus the susceptibility of the coating composition is measured. Depending on the selected frequencies, conclusions can be made regarding the degree of dispersion, particle density, and viscosity of the coating composition. The frequency is varied between 1 and 100 cups, and the field intensity of the energizing field should be lower than about 10 Oersted. The coating composition may be static or flowing in a container pipe or conduit which is surrounded by field coils and a measuring coil.

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