Patent US3718443A successfully refreshed from Google Patents.
US3718443A
Expired / Lapsed
US
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Composite metal products
Assignee: Huntington Alloys Corp
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Filing: 1971-12-14
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Granted: 1973-02-27
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Expires: 1991-12-14
Abstract
Abstract A composite product comprising a foundation alloy containing Ni to 45%, Cr 15 to 25%, C up to 0.1%, titanium and/or niobium in a total of about from 1 to 4%, Al 0 to 4%, Mo 0 to 10%, balance Fe, clad with an alloy containing Cr 45 to 60%, C up to 0.04%, Zr 0.1 to 4%, balance Ni. An intermediate layer of nickel can be included between the foundation and the cladding.
Inventors
- 👤 R Faulkner
- 👤 P Bridges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:04
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055; B; B32; B32B; B32B15/00; B32B15/01; B32B15/013; B32B15/015; C22C19/058; C22C27/00; C22C27/06; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854; Y10T428/12861; Y10T428/12931; Y10T428/12937; Y10T428/12944
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
25 words
A composite metal product as defined in claim 1, wherein the carbon content of said foundation member is about 0.04 percent to about 0.07 percent.
Claim 2
Dependent Claim
23 words
A composite metal product as defined in claim 1, wherein the carbon content of said foundation member is at least about 0.01 percent.
Claim 3
Dependent Claim
23 words
A composite metal product as defined in claim 1, where said foundation alloy contains not more than 3 percent of titanium and/or niobium.
Claim 4
Dependent Claim
22 words
A composite metal product as defined in claim 1, wherein said cladding member contains about 0.5 percent to about 2 percent zirconium.
References Cited (Backward Citations)
US1608694A
Cited
US1989236A
Cited
US1998496A
Cited
US1896411A
Cited
US2214002A
Cited
US2975513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |