Abstract: A laminate capable of mounting semiconductor elements thereon; comprising an insulating layer which is constituted by a resin portion of sea-island structure and a woven reinforcement. The resin portion of sea-island structure is, for example, such that a resin as islands are dispersed in a resin as a matrix. Thus, the insulating layer exhibits a coefficient of thermal expansion of 3.0.about.10 (ppm/K) in a planar direction thereof and a glass transition temperature of 150.about.300 (.degree.C.). Owing to these physical properties, thermal stresses which the laminate undergoes in packaging the semiconductor elements thereon can be reduced, so that the connections of the laminate with the semiconductor elements can be made highly reliable.

Abstract: A semiconductor device is provided with a stack of a plurality of semiconductor elements each having a bump deposited on each of surface electrodes, and a plurality of leads disposed closely adjacent to the stacked semiconductor elements, the leads being bonded to the bumps respectively thereby structurally integrally assembling the plural semiconductor elements.

Abstract: Glass capillaries having an internal diameter of a few micrometers are internally provided with a relatively thick polymer film by in-situ polymerisation of suitable monomers and/or oligomers in a solvent. The said polymer film is suitable as a stationary phase for liquid chromatography.

Abstract: A plastic optical fiber comprising a core and a clad, said core being formed by an amorphous and optically transparent polymer and said clad being formed by a polymer having a refractive index lower than that of the core by at least 0.3%, at least one of the core and the clad being formed by an amorphous and optically transparent polymer containing metal elements and halogen atoms, is low in light loss and excellent in heat resistance.

Abstract: Glass capillaries having an internal diameter of a few micrometers are internally provided with a relatively thick polymer film by in-situ polymerization of suitable monomers and/or oligomers in a solvent. The said polymer film is suitable as a stationary phase for liquid chromatography.

Abstract: An optical part for light transmission comprises a light conductor formed of a core of a transparent material and a clad of a material having a smaller refractive index than that of the core material, and a light emitting and/or receiving element, wherein the light emitting and/or receiving element is integrally combined with the core of the light conductor by a same material as the core material or by a material having a same refractive index as that of the core material and having a greater rigidity than that of the material forming the clad and/or jacket. The optical part can be used in a high temperature environment as well as a room temperature environment without involving any appreciable loss in light transmission.

Abstract: There is provided a resinous optical transmitting element in which a core, through which light is transmitted, is formed into a predetermined non-linear configuration, and a cladding lower in refractive index than the core is in close contact with the core. A method of manufacturing the optical transmitting element comprises the steps of polymerizing polymeric material forming the core, within a mold having a predetermined non-linear cavity, subsequently removing the mold, and forming the cladding about the core. The resinous optical transmitting element obtained by the method can be formed into a selected one of various configurations in compliance with the purpose. In addition, the resinous optical transmitting element is less in distortion, making it possible to reduce the transmission loss.

Abstract: This invention comprises unifying circuits with a base on which mechanical parts are mounted and relates to a mechanical part mounting chassis provided with a substrate and a circuit buried in the substrate and/or spread out on the substrate surface.

Abstract: A transparent resin material containing metallic atoms (except for alkali metals) which are ionic-bonded to a vitreous polymeric material constituting the substance of said resin material, in an amount of at least 8% by weight based on the total weight of the resin material, said resin material having a transparency of at least 80% in terms of a light transmittance, and a refractive index n.sub.D.sup.25 of at least 1.55.