Abstract: Sintered ceramic articles and a method for the production thereof are disclosed. When a shaped Si.sub.3 N.sub.4 ceramic article is sintered in the presence of SiO.sub.2 or a SiO.sub.2 -containing substance in an inactive gas atmosphere, there is obtained a sintered ceramic article having the surface thereof coated with a thin layer formed preponderantly of silicon oxynitride (Si.sub.2 N.sub.2 O).The sintered ceramic article of this invention excels in resistance to elevated temperatures, particularly temperatures exceeding 1200.degree. C., and enjoys a good surface condition.

Abstract: Disclosed are new shaving cream formulations and their preparation. The formulations incorporate salts of fatty acid esters of lactylic acid, saturated monoglycerides, propylene glycol monoesters and humectant as the essential ingredients.

Abstract: A process for treating an aqueous alkaline spent mixture produced during preparation of circuit boards and comprising a photopolymer resin. According to the method, first, an acid, a polyvalent cation and a coagulation aid are mixed with the spent mixture to produce a heterogeneous treated mixture comprising coagulated, precipitated photopolymer resin and an aqueous phase. Then, the coagulated, precipitated photopolymer resin is separated from the aqueous phase to produce a non-tacky, non-gumlike photopolymer resin sludge.

Abstract: Kit for use in restructuring a tooth by attaching a crown replacement on an endodontically treated tooth. A plugger is provided to heat and remove gutta percha, a burr to prepare a site consisting of a bore and counterbore, and at least one drill for final preparation of the bore. A post is provided corresponding in size to the drill and a chelating agent for flushing the site. An organic flushing agent is provided for flushing the site, as well as a cementing agent consisting of an unfilled resin and catalyst for application to the site within which the post is seated. A spiral apparatus is provided for the said application of the cementing medium in the prepared site and a composite resin is provided to fabricate a core and a crown form around the post.

Abstract: An insect repellent camouflage composition for application to the skin including N,N-diethyl-m-toluamide and camouflage pigment to provide both camouflage and insect repellence by a single application without interference with either function. Some embodiments include a skin-compatible vehicle miscible with the pigment and toluamide, preferably including water, skin oil(s), and emulsifier(s).

Abstract: A ceramic with anisotropic thermal conductivity, which has an aluminum nitride polytype layer arranged in a portion of an aluminum-nitride-based sintered body as a thermal barrier.

Abstract: The process makes it possible to determine for sound-absorbing structural elements made of a compact or foamed plastic with cup-shaped protuberances, the thickness and area size of the resonance surfaces that is required for an optimal sound aborption, as a function of the height of the protuberances and the endeavored resonance frequency.The use of this process also makes it possible to adapt the frequency response curve of the sound absorption coefficient of the structural element to the frequency response curve of the sound level of a noise source.

Abstract: A process is disclosed for delivery thrombin in dry powdered form from an aerosol container by first lyophilizing an aqueous solution of thrombin and a thrombin-compatible synthetic polymer e.g. polyvinyl pyrrolidone, placing the lyophilized cake in a pressure bottle by crimping on a valve stem and top, filling liquified chlorofluoroalkane-containing aerosol propellant into the bottle, and actuating the valve to dispense in dry-finely divided powdered form a mixture of thrombin and polyvinyl pyrrolidone, which powdered thrombin is for use in controlling bleeding during surgery.

Abstract: An insect-active assembly which can provide insect repellency, insecticidal action, or both, and which is adapted to be directly affixed to the garment worn by a person is provided. The assembly comprises a polymeric body which contains an insect-active composition, as a volatile plasticizer, which, over time, migrates from the polymeric body to provide the desired degree of insect-active action. The insect-active assembly can be affixed directly to the garment of a person either by being configured to fit over or be affixed to a portion a the person's garment, (e.g., as a hatband) or by having separate means provided to affix it to the garment. Such separate means for affixing the polymeric body to the garment include pressure-sensitive adhesive coatings and hook-and-loop fasteners.

Abstract: A method for producing a lightweight set cementitious product having excellent strength by forming a aqueous cementitious slurry, incorporating therein expandable polystyrene beads which are less than completely expanded, and heating the slurry to drive off excess water, to cause a cementitious mixture to set, and to further and completely expand the polystyrene beads. In a preferred embodiment and aqueous slurry of calcium sulfate hemihydrate is produced including expandable polystyrene beads in a state which they are partially but not fully pre-expanded. The slurry is deposited between two paper cover sheets, and the product is heated to drive off excess water, to set the gypsum to the solid dihydrate state, and to complete the expansion of the polystyrene beads until they reach their fully expanded state, thereby resulting in a strong lightweight gypsum wallboard which has excellent adhesion between the expanded polystyrene beads and the set gypsum.

Abstract: A method for reducing sensory nerve activity in a hypersensitive tooth and for desensitizing hypersensitive dentin involves applying to the surface of exposed dentin of a subject's tooth a potassium salt selected from the group consisting of potassium bicarbonate and potassium chloride in an amount effective to reduce sensory nerve activity and to desensitize hypersensitive dentin of hypersensitive teeth.In the presently preferred embodiment of the invention, potassium bicarbonate is the potassium salt and is applied in a formulation, for example, an aqueous solution containing from about 1.0 to about 360.0 mg of potassium bicarbonate per ml of solution.

Abstract: A wear resistant article, such as a cutting tool. A hard ceramic or cemented carbide substrate is coated with a laminated oxide coating about 0.3-20 microns thick, having at least three ultrathin layers. Each layer is an oxide layer about 0.1-3 microns thick, predominantly of a different material than adjacent layers. The oxide or oxides of adjacent layers may be dispersed as discrete particles within one or more of the layers. A process for producing the article is also disclosed.

Abstract: A coated hardmetal body comprised of a hardmetal core which contains cobalt as well as tungsten carbide and of an oxygen containing hard substance layer free of binder metal is disclosed whose hardmetal basic body has a zone at its surface which is 0.2 to 20 microns thick and which contains the CoWB phase in addition to the hardmetal components. It is of particular advantage for the binder metal free, oxygen containing hard substance layer to be composed of aluminum oxide, zirconium oxide or aluminum oxynitride. It is further provided that at least one further binder metal free hard substance layer of carbides, nitrides, borides and/or oxides is applied to the binder metal free hard oxide layer. The coated hardmetal body may advantageously be used as a cutting bit for machining metallic workpieces. The coated hardmetal body is produced by gas phase boration and subsequent hard substance coating according to the CVD process.

Abstract: By using a ceramic decal whose design layer consists of a bright noble metal preparation containing a thermoplastic resin and which is covered by a layer of a lead borosilicate glaze frit, it is possible to produce in a single firing a bright noble metal decoration protected by a glaze.

Abstract: A multilayer wiring substrate for mounting a plurality of electronic circuit elements wherein individual wiring layers are separately by insulating layers of an organic material. A plurality of contact pads are formed on the uppermost insulating layer and are connected to wiring members by pressure bonding at least one ceramic buffer member is provided beneath the contact pads to prevent pressure applied during bonding from affecting the wiring layers.

Abstract: A tri-color or alternating bi-color lipstick and method of molding the same is disclosed. The lipstick is formed using a known book-type mold. The color divisions are achieved by using a removable insert. One insert is used to form the middle section. Another insert is a solid plate and is used to prevent lipstick product from entering the middle section while the outer sections are being filled. In use, the lipstick is axially rotated by the user to present the desired color to the lips. In serial or simultaneous fashion, more than one color may be applied to permit blending.

Abstract: A fire resistant plastic trash container is provided by embedding a contiguous mass of incombustible particulate in the container surfaces to be protected, suitably by gravity impact during rotational molding of the container.

Abstract: This invention relates to an optical filter made of inorganic material for green light which transfers green light and absorbs all of the other colored lights by sticking an inorganic mixture powder pasted by mixing with screen oil on a glass substrate and firing it. The mixture includes transparent glass powder and oxides of cobalt and either of chrome and a combination of aluminum and chrome. The contrast of a picture displayed on a display device can be substantially increased by reducing the reflection of incident ambient light without the reduction of brightness on account of the application of the above optical filter onto the displaying screen.

Abstract: An electroluminecent device comprises a pair of electrodes, two luminescent layers provided between the pair of electrodes, and an electrode provided between the two luminescent layers, at least one of said two luminescent layers having a layer comprising a monomolecular film of an organic compound or a built-up film thereof.

Abstract: The present invention provides composite material compositions using waste synthetic fiber released from fiber-related factories or general households. In an embodiment of the present invention, a thermoplastic synthetic resin may be incorporated with plasticizer(s), lubricant(s), and other additive(s), the mixture being molten and then kneaded with waste synthetic fiber which had been fibrillated into filaments, whereby said waste synthetic fiber is impregnated with the molten resin liquid to form a composite material composition. The present invention can thus provide inexpensive composite material compositions having excellent mechanical properties by making use of waste synthetic fiber which has been junked as waste so far, and lessening the rate of use of synthetic resins.