Patent US5080862A successfully refreshed from Google Patents.
US5080862A
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Iridium silicon alloy
Assignee: General Electric Co
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Filing: 1990-04-25
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Granted: 1992-01-14
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Expires: 2010-04-25
Abstract
Abstract An alloy having a very high resistance to oxidation is taught. The alloy contains between 30 and 75 atom percent of silicon in an iridium base. The alloy may be used in the form of a surface coating to protect structural elements of other materials from oxidation. The alloy may also be used as an ingredient of a composite.
Inventors
- 👤 Krishan L. Luthra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:48
CPC Classifications
C; C22; C22C; C22C5/00; C22C5/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
45 words
The alloy consisting essentially of approximately 30 to 75 atom percent silicon, said alloy containing in addition an effective amount less than 2 weight percent of at least one metal selected from the group consisting of yttrium, hafnium, and zirconium and the remainder essentially iridium.
Claim 2
Dependent Claim
45 words
The alloy consisting essentially of approximately 30 to 75 atom percent silicon, said alloy containing in addition an effective amount less than 2 weight percent of at least one metal selected from the group consisting of yttrium, hafnium, and zirconium and the remainder essentially iridium.
Claim 3
Dependent Claim
44 words
The alloy consisting essentially of approximately 30 to 75 atom percent silicon, and containing in addition an effective amount less than 0.5 weight percent of at least one metal selected from the group consisting of yttrium, hafnium, and zirconium and the remainder essentially iridium.
Claim 4
Dependent Claim
44 words
The alloy consisting essentially of approximately 30 to 75 atom percent silicon, and containing in addition an effective amount less than 0.5 weight percent of at least one metal selected from the group consisting of yttrium, hafnium, and zirconium and the remainder essentially iridium.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |