Abstract: A method of attaching dialdehyde starch to surfaces is disclosed. A substrate to which substances may be coupled, which substrate comprises at least one surface coated with dialdehyde starch, and products produced utilizing the substrate are also provided.

Abstract: A field curvature corrector is provided which has a positive power and a positive exact field curvature (EFC) value for at least one principal ray, where the EFC value is given by:EFC=-.SIGMA.(n'-n)c/nn'the summation being taken over the surfaces of the corrector, and for each of the surfaces, n is the index of refraction on the object side of the surface, n' is the index of refraction on the image side of the surface, and c is the curvature of the surface at the intersection of the surface with the principal ray, c being positive if the center of curvature is on the image side of the surface. By means of the corrector, the field curvature of a positive lens system can be corrected without the use of negative lens elements.

Abstract: Disclosed is an improved color projection TV lens system which provides reduced chromatic aberration and improved chromaticity. These improvements are achieved by incorporating a light absorbing material into at least one lens in the system wherein the lens has a substantially uniform thickness.

Abstract: The invention relates to articles with a non-stick coating. It relates in particular to an article consisting of a substrate whose surface has -OH groups, and of at least one non-stick polymer layer, said article having also, applied between said substrate and said non-stick polymer layer, a layer which is obtained by making an appropriate bifunctional organosilane react with a polyamic-acid precursor of polyamide-imide and with -OH groups of the substrate surface, then drying and converting said polyamic-acid into a polyamide-imide by heating at an appropriately high temperature. The invention also provides processes and compositions to make non-stick glass and glass-ceramic cookware having clear, vivid, brilliant, attractive colors and stable and durable decorating patterns. Said coloring is achieved by precoating the substrate surface with a polyimide resin containing colored pigment, and preferably, an organosilane.

Abstract: A furnace for fining molten glass is provided in which glass flows in a substantially vertical direction prior to exiting the furnace. As it flows vertically, the glass is allowed to cool. This cooling, in turn, allows the glass to be removed from the furnace through a narrow passageway without producing excessive wear of the passageway. Preferably, vertical flow of the molten glass at the exit end of the furnace is produced across the furnace's full width. In this way, the molten glass does not stagnate within the furnace and undesirable scums on the top surface of the glass are avoided. In certain preferred embodiments, the vertical flow is achieved by a trough which has sloped sides and which connects with and extends downward from the bottom surface of the furnace.

Abstract: An electric melting furnace is described for melting high electrical resistivity glass, such as E-glass, within a melting chamber surrounded by a relatively low electrically resistivity refractory, such as chromic oxide refractory, by utilizing interconnected peripherally positioned batch electrodes at substantially the same potential as the chromic oxide walls and centrally positioned electrodes which are immersed a greater distance than the batch electrodes. A quiescent zone is formed adjacent a lower portion of the melting chamber and the batch blanket and effective hydrostatic head of the molten bath are adjusted by controlling the immersion of the batch electrodes within the molten bath.

Abstract: A method is set forth for controlling the height of batch material on the surface of a molten bath in a cold-crown or vertical melting furnace by measuring the level of the upper surface of the batch material, the level of the fusion line between the batch and bath, and the effective hydrostatic head of the molten glass and batch material thereon over a predetermined height at such known fusion line level. The thickness of the batch blanket is then determined from the level of the fusion line and the measured level of the top of the batch blanket, and power input and rate of batch distribution are controlled to maintain such desired levels and accordingly a predetermined batch thickness, by continuously monitoring the level of the batch material and the effective hydrostatic head.

Abstract: A method of encapsulating microelectronic devices. A jet of gas is directed to an area of the device which is to remain free from encapsulating material. Polymerizable encapsulating material is then applied to the device. The material flows around the region upon which the jet impinges. The material is then cured.

Abstract: Disclosed is an apparatus and process for the molding of hollow articles. The apparatus comprises a mold cavity with a wire longitudinally disposed therein. A follower is slidably disposed about the wire in close abutment with both the wire and inside wall of the mold cavity. The follower is preferably disposed in the mold cavity toward its proximal end so as to provide an annular space between the wire and inside wall of the mold. In practice, material to be molded is injected into the annular space at the proximal end of the mold cavity and flows longitudinally toward the distal end of the mold cavity while pushing the follower along the wire ahead of it.