Brunswick Corporation

Johnson & Johnson Dental Products Company

United Technologies Corporation

Dentsply International Inc.

Jeneric/pentron Inc.

Carlino Panzera

Arnold R Erickson

Robert P Tolokan

Robert D DeLuca

Robin M Jones

Robert D De Luca

Richard C Krutenat

Jenn-Ming Wu

Brain Martin

Warren R Cannon

Lisa Dimeglio

A porcelain dental restoration having a plurality of layers including a translucent porcelain layer overlying a more opaque ceramic layer, wherein the color of each of the said two layers is uniform and wherein the colors of the said two layers match.

Porcelain dental restoration having a plurality of uniform,

There is disclosed an orthodontic bracket including a base member for attaching to a tooth and a body member extending from the base member. The body member includes walls that define an archwire groove. The walls are made of single crystal alumina. Preferably, the entire bracket is made of single crystal alumina, and most preferably, single crystal alpha-alumina or sapphire.

Crystalline alumina orthodontic bracket

A porcelain paste comprising a porcelain powder mixed with an aqueous colloidal dispersion of a urethane polymer. The paste can be applied as the first layer to a dental coping, and does not need to be fired prior to the addition of the body porcelain layers.

Dental porcelain paste and method of using the same

An all-ceramic dental restorative comprising a core and a glaze having the following composition:

Ceramic dental restorative

A ceramic-metal composite laminate capable of exposure to high temperature differentials without damage, consisting of an inner ceramic layer, an outer metal layer and an intermediate interface layer of a low modulus metallic low density structure having a high melting point. The ceramic layer is secured to the low modulus structure directly or through an intermediate ceramic-metal composite, and the outer metal layer is brazed to the intermediate low modulus layer. Thermal strains caused by a temperature differential between the inner and outer layers are taken up without harmful effect by the intermediate low modulus layer.

Ceramic-metal laminate

A glass ceramic, useful in making dental crowns and bridges, consisting essentially of:

Castable glass-ceramic composition useful as dental restorative

A stable glaze for use on ceramic dental copings has the following composition:

Glaze for use on non-metallic dental copings

There is disclosed a single-frit porcelain powder, suitable for use as a porcelain layer on metal-base dental restorations, and having a fired coefficient of thermal expansion within the range of from about 12 to about 14.times.10.sup.-6 in./in. .degree.C., wherein said single frit porcelain is of the following composition:

Single-frit glass ceramic

A composite laminate capable of exposure to high temperature differentials without damage, comprising a first layer, a second layer and an intermediate web interface layer of a low modulus metallic low density structure having a high melting point. The first layer is secured to the low modulus structure directly or through an intermediate composite layer, and the second layer is bonded or secured to the intermediate low modulus layer. The thermal strains caused by a temperature differential between the first and second layers are taken up without harmful effect by the intermediate low modulus web layer.

Method of attaching ceramics to metals for high temperature operation

Porous ceramic seals and method of making same

An abradable seal material suitable for high temperature application in turbomachinery comprising a sintered mat of (1) randomly disposed fine metal fibers, or (2) fine metal powders or (3) both fibers and powders. The metal fiber and powder are composed of an alloy consisting essentially of I, Al, Cr, II, or I, Al, Cr, III, wherein I is at least one member of the group Fe, Co, Ni, and Co plus Ni, II is a member of the group consisting of Y, Sc and Rare Earths, and III is at least one member of the group consisting of Si, Hf, Zr, Cb, and Ta. The exposed surfaces of the fibers and powder forming the seal are protected against oxidation at high temperatures by a coating of Al.sub.2 O.sub.3 which is formed on the substrate. Said substrate has an Al content of at least 4% to replace spalled Al.sub.2 O.sub.3 and for 'healing' any Al.sub.2 O.sub.3 scale fractures.

Abradable seal material and composition thereof

Abradable seals for compressors and turbines are made of fibers and powders of an alloy consisting essentially of iron, nickel, chromium, aluminum, and yttrium. The alloy preferably contains 22-27 weight percent nickel, 18-22 weight percent chromium, 9-15 weight percent aluminum, 0.0005-0.05 weight percent yttrium, with the balance iron. Heat treatment of the alloy provides an aluminum rich phase which is uniformly dispersed throughout the alloy.

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Belle Mead, NJ, United States of America

Carlino Panzera