Getter
OwnerJohn Casci, Stephen Catchpoleinventors
Life of this patent
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Abstract
An oxygen getter for use in electronic apparatus and the like comprises a readily oxidisable metal or metal compound such as copper, cobalt or nickel supported on a solid support such as alumina, silica, titania, zirconia or a zeolite.
Claims12
A getter for use in a sealed enclosure comprising a readily oxidisable metal or metal compound supported on a solid support, wherein, when said metal is in elemental form, the metal surface area is greater than 5 m2g−1 of metal.
A method of forming a shaped solid particle suitable for use as a getter for oxygen, said getter comprising a readily oxidisable metal or metal compound supported on a solid support, comprising the steps of:
- (a) forming a shaped particle of solid support material,
- (b) depositing a compound of said metal on said shaped particle of support material, by impregnation or precipitation techniques, and
- (c) reducing at least a portion of said metal compound to elemental metal by heating said shaped support and metal compound in a gaseous stream containing hydrogen.
A method of forming a shaped solid particle suitable for use as a getter for oxygen, said getter comprising a readily oxidisable metal or metal compound supported on a solid support, comprising the steps of:
- a) depositing a compound of said metal on the support material,
- (i) by impregnation of precipitation, or
- (ii) by forming an intimate mixture of support material and metal compound by co-precipitating the metal compound with the support material;
- then
- (b) shaping the supported metal compound into a shaped solid particle by tabletting, pelleting or extrusion techniques, and
- (c) reducing at least a portion of said metal compound to elemental metal by heating said shaped support and metal compound in a gaseous stream containing hydrogen.
(canceled)
A getter for gettering oxygen in an electrical, electronic or optoelectronic apparatus, said getter comprising a shaped solid particle comprising a metal selected from the group consisting of copper, cobalt or nickel in elemental form supported on a solid support material selected from the group consisting of alumina, silica, silica-alumina, titania, zirconia, carbon or a zeolite.
Dependencies are inferred from the claim text.