US 5,944,088 AGranted

Ceramic shell molds and cores for casting of reactive metals

AssigneeRemet Corporation

InventorRoy C. Feagin

Life of this patent

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Abstract

Mold coatings that are relatively unreactive with titanium and titanium alloys during casting are prepared from yttria slurries, which may contain other refractory materials, an acid and an inert organic solvent.

Claims22

Dependent claims

A coating composition, said coating composition comprising a finely divided yttria, an acid, an inert organic solvent and an additional refractory material.

Dependencies are inferred from the claim text.

Facts

Application: 08/964,350Filed 4 Nov 1997 · division
Priority: 28 Jan 1987
Granted: 31 Aug 1999
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

C04B 35/66
Shaped ceramic products characterised by their composition ; Ceramics compositions ; Processing powders of inorganic compounds preparatory to…
B22C 1/00
Compositions of refractory mould or core materials
B22C 1/165
Characterised by the use of binding agents; Mixtures of binding agents: in the manufacture of multilayered shell moulds
B22C 3/00
Selection of compositions for coating the surfaces of moulds, cores, or patterns

Family

Serial007,883Parent of this division · filed 28 Jan 1987
Serial456,824Parent of this division · filed 1 Jun 1995
US 5,738,819 AParent of this division
US 5,535,811 AParent of this division
US 5,944,088 AThis patent

From the US filing history. Foreign family members aren’t listed.

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