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Cladding of metals
Abstract
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1352319 Making metal articles JOHNSON MATTNEY & CO Ltd 19 April 1971 [20 March 1970] 13599/70 Heading B3A [Also in Division C1] Articles for use in glass manufacture at operating temperatures of between 1100‹ C. and 1500‹ C. comprise a core and a sheet of a platinum group metal or an alloy based on such metal with a barrier layer between core and sheath of magnesia, the core being (1) either Mo or W with the partial pressure of oxygen in the interspace being below one micron, or (2) of a refractory metal or alloy of Nb, Ta, Cr, Zr, V, Hf, Rh and in which the oxides thereof are less volatile than the oxides of Mo at the operating temperature or (3) of Mo or W or an alloy of Mo and W with an atmosphere of an inert gas in the interspace. Argon is the preferred gas, but nitrogen or helium may be used. At least the major portion of the surface of the core may be coated with a getter material selected from Ti, Zr, Hf, Th, V, Ni or Ta or may be alloyed therewith, the getter material being different from the core material. The barrier layer may also contain a small quantity of vitreous material such as a borosilicate glass. Specifications 1,190,266, 1,195,349 and 1,222,434 are referred to.
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machine-classified
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fterm-machine-classified
fterm-family-classified
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GB1352319A
United Kingdom
Published patent application
-
Current Assignee
The listed assignees may be inaccurate.
Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list. - Johnson Matthey PLC
Worldwide applications
1970
GB
1971
FR
US
CH
CA
DE
JP
Application number: GB1359970A
Filing date: 1970-03-20
Legal status: Expired
Application number: FR7109055A
Filing date: 1971-03-16
Legal status: Expired
Application number: US00125430A
Filing date: 1971-03-17
Legal status: Expired - Lifetime
Application number: CH402871A
Filing date: 1971-03-18
Legal status: IP Right Cessation
Application number: CA108,261A
Filing date: 1971-03-19
Legal status: Expired
Application number: DE19712113437
Filing date: 1971-03-19
Legal status: Pending
Application number: JP1611371A
Filing date: 1971-03-20
Legal status: Pending
Application GB1359970A events
A timeline of key events for this patent application, including priority claims,
publications, legal status, reassignments, and litigation.
Google has not performed a legal analysis and makes no representation as to the accuracy or completeness of the events listed.
Google has not performed a legal analysis and makes no representation as to the accuracy or completeness of the events listed.
1970-03-20
1974-05-08
Status
Expired
Description
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Cited By (35)
Publication number
Priority date
Publication date
Assignee
Title
Family To Family Citations
* Cited by examiner, † Cited by third party, ‡ Family to family citation
Similar Documents
Publication
Publication Date
Title
Priority And Related Applications
Applications Claiming Priority (1)
Application
Filing date
Title
GB1359970
1970-03-20
Legal Events
Date
Code
Title
Description
1974-09-18
PS
Patent sealed [section 19, patents act 1949]
1982-11-17
PCNP
Patent ceased through non-payment of renewal fee
Data provided by IFI CLAIMS Patent Services
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