Patent US4240847A successfully refreshed from Google Patents.
US4240847A
Expired / Lapsed
US
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Production of platinum group metal layer on a refractory
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1978-10-23
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Granted: 1980-12-23
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Expires: 1998-10-23
Abstract
Abstract There is provided a process, and the product resulting therefrom, for coating a refractory block or substrate with a small particle size form of at least one platinum group metal whereby a fused layer of such metal is formed on the refractory and is directly and strongly adhered on a surface thereof. This technique can likewise be employed in such a manner that the layer is a bonding agent for purposes of bonding a separate sheet of a platinum group metal to the refractory which structure can then be employed as a glass contacting member in apparatus for handling molten glass.
Inventors
- 👤 Max G. Chrisman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:47
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/167; C03B5/1672; C03B5/1675; C03B37/00; C03B37/08; C03B37/095; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/51; C04B41/5105; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C23; C23C; C23C26/00; C23C26/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
97 words
A process comprising heating an article comprised of a particulate layer of a small particle size alloy composition consisting essentially of platinum and rhodium disposed intermediate a refractory substrate and a sheet of platinum group metal or an alloy thereof so as to bond said sheet to said substrate, said small particle size alloy composition being produced by a process which comprises substantially quantitatively reducing platinum and rhodium complexes in an aqueous solution and precipitating the elemental form of said alloy composition therefrom as a solid, small particle size form thereof and drying said precipitate without sinterization.
Claim 2
Dependent Claim
97 words
A process comprising heating an article comprised of a particulate layer of a small particle size alloy composition consisting essentially of platinum and rhodium disposed intermediate a refractory substrate and a sheet of platinum group metal or an alloy thereof so as to bond said sheet to said substrate, said small particle size alloy composition being produced by a process which comprises substantially quantitatively reducing platinum and rhodium complexes in an aqueous solution and precipitating the elemental form of said alloy composition therefrom as a solid, small particle size form thereof and drying said precipitate without sinterization.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein said sheet is a sheet of a platinum-rhodium alloy.
References Cited (Backward Citations)
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US2799600A
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US3503118A
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US3497384A
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US3598635A
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US4059541A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |