A nuclear fuel particle wherein a core, up to about 250 microns in diameter, of a normally solid fissionable material is completely encased in a shell having at least two concentric layers. A yielding of carbonaceous material about 5 to about 50 microns thick is disposed inward of a layer of substantially impermeable refractory material, e.g., pyrocarbon, up to about 100 microns thick. Examples of the yielding layer include carbonized synthetic polymer resins and sooty pyrocarbon.

A coated, absorbable suture wherein a particular absorbable composition comprising a film-forming polymer, a lubricant and a hydrophobic material is provided for coating sutures, particularly multifilament synthetic absorbable sutures, in order to improve the smoothness in tie-down properties of the sutures.

Multilayer high transmittance, low emissivity coatings deposited over transparent substrates have improved mechanical durability, e.g. scratch resistance by the inclusion of at least one mechanical durability enhancing layer (hereinafter "MDE layer"). The MDE layer includes one or more pairs of a zinc oxide sublayer having deposited thereover a sublayer of an oxide of zinc and tin. In one embodiment of the present invention, the MDE layer is composed of two sublayers which includes a first subla...

The palatability of comestibles, such as animal food is improved by coating such food with yeast from the genera ascomycetous yeasts or asporogenous yeasts. In one embodiment comestibles such as an animal food is coated with either Torulopsis utilis or Saccharomyces cerevisiae.

A composite structure having a coating of thermoplastic material on a substantially inflexible substrate is disclosed. The composite structure comprises (a) a substantially inflexible substrate having a plurality of orifices in the surfaces thereof that is coated, the orifices being of a shape such that, at least in part, the cross-sectional area of the orifices increases as the distance from the surface of the substrate increases, and (b) a coating of solid thermoplastic material on the surface...

A coated fastener includes a coating comprised of one-hundred percent dry solids which is virtually free of solvent emissions when applied and during curing, covers substantially the entire exterior of the fastener, provides a protective coating to the fastener against corrosion, enables the fastener to be adhered to at least one other fastener, and provides increased holding power of the fastener after the fastener is driven into a desired surface.

A ceramic filament comprising a tungsten core and an outer layer of silicon carbide, the tungsten core and the outer layer being separated by an intermediate layer of titanium carbide. Also claimed is a process for the deposition of a titanium carbide coating on a tungsten filament which comprises heating the filament and passing the heated filament through a deposition chamber containing gases which on contact with the hot filament deposit the coating, the gases comprising a hydrocarbon and a t...

A coated article (10) and method of making the same is disclosed wherein the coated article (10) includes a substrate (12) consisting essentially of titanium or titanium alloy and an outer coating (14) of thermoplastic resin for protecting the substrate from chemical degradation and maintaining stability during exposure to temperatures of at least up to 260.degree. C. An adhesion primer layer (16) is disposed between the substrate (12) and the outer coating (14). The adhesion primer layer (16) i...

A coated catalyst is prepared by depositing an alloy by physical vapor deposition and/or chemical vapor deposition on a molding, at least one alloy component being a metal selected from the group consisting of aluminum, gallium, silicon, germanium, tin, lead, bismuth, yttrium, titanium, zirconium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, iron, cobalt, ruthenium, rhodium, palladium, osmium, iridium, platinum, copper, silver, gold and zinc.

The present invention relates to coated seeds. The coated seed according to the invention is a seed coated with a coating mass composition comprising 70 to 95 parts by weight of a clay mineral of double-chain structure and 30 to 5 parts by weight of a hydrophobic compound. The coated seed provided by the invention has a coating layer of adequate hardness and yet insures good germination characteristics, thus being contributory to the rationalization and development of agricultural production.