Abstract: A silicon nitride sintered member comprises a silicon nitride sintered body and a zirconia layer coated onto the surface of the silicon nitride sintered body. The zirconia layer is preferably coated onto the surface of the silicon nitride sintered body through plasma spraying. The zirconia-coated silicon nitride sintered member has both high strength at high temperatures and excellent heat insulating property.

Abstract: An electrosensitive substrate from which a metallized surface layer is selectively removed using electrosensitive printing to expose a patterned underlayer. The patterned underlayer may be randomly exposed, or exposed in prescribed portions. Tags, labels or the like of this description may be electrically imprinted with unique identification codes, such as serially printed alphanumeric characters. Such tags and labels resist duplication by conventional printing techniques. The patterned underlayer may be imprinted using inks of a variety of surface textures, resulting in an embossed effect in the metallized surface. Alternatively, a lacquer layer may be provided between the patterned layer and the metallized surface to achieve a uniform appearance of the metallized surface.

Abstract: Plastic film and sheet material are provided which have integrally formed surface ribs which are designed to inhibit tears from propagating in one or more selected directions along or across the film or sheet. The ribs may be arranged in laterally spaced parallel rows, or in a criss-cross pattern and may have various cross-sectional shapes.The film or sheet which may be comprised of polyethylene or other suitable plastic material, may be used as drop cloths, tarpaulins, moisture barriers, mulching and soil erosion control material and so on. The film or sheet may be formed by extrusion, co-extrusion, blown film or other plastic forming techniques.Thicknesses of the film or sheet between the ribs may range from about 1 mil (or less) up to about 80 mil, with thicknesses through the ribs of about 3 to about 500 mil.

Abstract: Mosquito repellent compositions comprising an active agent and an oil-soluble, water insoluble acrylate polymer having specific solubility parameters of approximately 6-10 (cal/cc).sup.1/2 in poorly hydrogen bonding solvents are disclosed. The compositions are substantive to the skin, have increased effective lifetimes and are cosmetically acceptable.

Abstract: Biologically compatible materials capable of being formed into implants, comprising layers of poly(tetrafluoroethylene) and mixtures of poly(tetrafluoroethylene) and elastomer, having excellent compliance, strength, elasticity and suturability are disclosed. The materials are preferably prepared as implants or vascular grafts by co-extruding a relatively thin luminal layer of poly(tetrafluoroethylene) having a distinct fibral nodal microstructure within a layer of a mixture of poly(tetrafluoroethylene) and elastomer to impart elasticity to the implant. A preferred embodiment comprises a radially asymmetric composite vascular graft having a luminal layer of poly(tetrafluoroethylene), a second layer of poly(tetrafluoroethylene)/elastomer mixture, a third layer of elastomer, and a fourth layer of a monomer fibrous elastomer matrix with each layer having a distinctive pore size, pore shape and porosity to promote tissue ingrowth and periprosthetic tissue anchoring.

Abstract: A gradient radiation image conversion sheet, comprising a protective layer a fluorescent layer and a support layer, and the transmissions of said protective layer and/or said fluorescent layer are partially changed and the dots of the print of said gradient patterns and the border between the printed area and the unprinted area are blurred. The gradient image conversion sheet has a gradation area in which the change in transmission is extremely smooth and a speed ratio which may be set in a relatively wide range, and the sheet can be produced through a mass-production system to give products of constant quality.

Abstract: The present invention provides a substrate having a pattern of a quilted article on one surface thereof. The substrate is preferably a rigid, but relatively easily cut material such as expanded polystyrene. Slits are cut into the substrate along the lines defining the pattern. A paper pattern having thereon a pattern identical to one on the substrate is also provided. The pattern comprises sections identified by numbers and all sections identified by the same number have the same quilt element. The quilt elements are made by cutting sections from the paper pattern and using the sections as templates to cut pieces of fabric somewhat larger than the template, resulting in the creation of excess fabric surrounding the template. The pieces of fabric are then attached to the substrate by punching the excess fabric into the slits surrounding the corresponding section on the substrate. The process is repeated for other sections on the substrate to produce the completed quilted article.

Abstract: A process of coating a glass substrate with an elastomeric film, as well as the composite product of said process is disclosed. The process comprises forming, by conventional coating methods, a film of an aqueous silicone emulsion on a surface of a glass substrate that may have a metallic coating. The aqueous silicone emulsion comprises anionically stabilized hydroxylated polydiorganosiloxane, colloidal silica, pigment, an acrylic thickening agent, and make-up water. The process is especially useful for rendering architectural-grade glass stronger and substantially opaque.

Abstract: A thin film EL element has a glass substrate, a pair of electrode layers formed on this glass substrate, and an electroluminescent layer sandwiched between these electrode layers. The glass substrate is of non-alkali type and has volume resistivity of 10.sup.6 ohm-cm or greater at 600.degree. C., alkali content of 0.5 wt % or less, and strain point of 600.degree. C. or higher.

Abstract: Metal-ceramic composite bodies are disclosed which each comprise a metallic member and a ceramic member. The metallic member is integrally connected to the ceramic member by fitting the ceramic member itself or a projection formed on the ceramic member into a recess or a through hole formed in the metallic member. The hardness of a metallic portion of including at least a fitted portion between the metallic member and the ceramic member is not less than HRC 38. The roughness of the inner surface of the faces of the through hole of the metallic member at the fitted portion is not more than 8 .mu.m at the maximum height (R.sub.max) or not more than 0.5 .mu.m at the center line average roughness (R.sub.a). A process for manufacturing the same is also disclosed.

Abstract: A substrate provided thereon, with a film having a large number of fine grooves of a desired pattern is herein disclosed, which comprises a body of substrate and a film of at least one polymerized-condensed or crosslinked organometal compound formed on the substrate and having a large number of fine grooves on the surface and which can be produced by applying a solution containing at least one organometal compound and optionally a thickening agent to the surface of a body of substrate to form a film thereon; then impressing the film with a mold having a large number of fine ridges thereon to form grooves corresponding to the ridges, on the film; or applying the solution to the mold to form such a film and transferring the film to the body of substrate; and then calcining the resulting film having fine grooves to solidify the same. According to the method, an excellent substrate having good durability and optical properties can be produced simply and in a good yield.

Abstract: A solution for conditioning tooth or bone matter for filling, containing an acid and an amphoteric amino compound, the solution having a pH from 0.1 to 3.5.

Abstract: A dosage form is disclosed for delivering the beneficial drugs pseudoephedrine and brompheniramine to a biological environment of use.

Abstract: A composition for the extemporary preparation of gels and creams for topical application and for pharmaceutical and cosmetic use comprises, besides one or more ingredients active under the pharmacological and/or cosmetic point of view, a gum swellable in water and a permeation agent.

Abstract: A spacer member for positioning between fragile objects, such as glass panels, during shipment. The spacer includes a tack layer of sufficient adhesive properties to allow the spacer to adhere to the surface of the fragile object without the use of a surface tape.

Abstract: A silicon carbide sintered member is coated at its surface with zirconia, whereby the heat insulating properties are considerably improved.

Abstract: Hard materials are generally not tough but they are brittle. Thin film superlattices made of a hard and a tough material or two hard materials having different lattice structure are resistant to crack propagation and are both hard and tough.

Abstract: An impact-cushioning sheet comprises an air enclosed film base having concave portions or a perforated base material composed of fiberboard and/or foamed body and a crosslinked viscoelastic body filled in the concave portions or holes and having specified properties. A direct-applying restraint type floor damping structure is manufactured by adhering a floor component part to at least one surface of the impact-cushioning sheet.

Abstract: An article of manufacture is provided having a SiC whisker reinforced alumina matrix substrate which has an alumina coating bonded to its exterior surface. It has been found that these articles are useful as cutting inserts in the high speed rough machining of steels.

Abstract: A radiation image storage panel comprising a support and phosphor layers provided thereon which comprises a binder and a stimulable phosphor dispersed therein, characterized in that said phosphor layer include at least two layers of the first phosphor layer provided on the support and the second phosphor layer provided on the side nearer to the front surface of the panel than said first phosphor layer, and that the mixing ratio of the binder to the stimulable phosphor in the first phosphor layer is larger than the mixing ratio of the binder to the stimulable phosphor in the second phosphor layer.