Patent US4885134A successfully refreshed from Google Patents.
US4885134A
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US
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Sputtering target and method of preparing the same
Assignee: Eastman Kodak Co
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Filing: 1988-08-22
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Granted: 1989-12-05
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Expires: 2008-08-22
Abstract
Abstract Highly uniform alloy targets are prepared by melting together predetermined amounts of terbium iron and cobalt with an additional element selected from platinum, chromium, nickel, palladium, tantalum, hafnium or mixtures thereof in an argon atmosphere and casting the thus formed melt into a mold.
Inventors
- 👤 Tukaram K. Hatwar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:47
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/26; C; C23; C23C; C23C14/00; C23C14/22; C23C14/34; C23C14/3407; C23C14/3414; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/928
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
47 words
A sputtering target comprising a fine grain, physically sound, uniform composition, uniform structure corrosion resistant alloy of terbium, iron and cobalt and containing from about 2.5 to about 15 atomic percent of an element selected from the group consisting of platinum, chromium, nickel, palladium, tantalum and hafnium.
Claim 2
Dependent Claim
47 words
A sputtering target comprising a fine grain, physically sound, uniform composition, uniform structure corrosion resistant alloy of terbium, iron and cobalt and containing from about 2.5 to about 15 atomic percent of an element selected from the group consisting of platinum, chromium, nickel, palladium, tantalum and hafnium.
Claim 3
Dependent Claim
11 words
The sputtering target of claim 1 wherein the element is platinum.
Claim 4
Dependent Claim
11 words
The sputtering target of claim 1 wherein the element is chromium.
Claim 5
Dependent Claim
11 words
The sputtering target of claim 1 wherein the element is nickel.
Claim 6
Dependent Claim
11 words
The sputtering target of claim 1 wherein the element is palladium.
Claim 7
Dependent Claim
11 words
The sputtering target of claim 1 wherein the element is tantalum.
Claim 8
Dependent Claim
11 words
The sputtering target of claim 1 wherein the element is hafnium.
Claim 9
Dependent Claim
50 words
The sputtering target of claim 1 wherein terbium is present in the alloy in an amount of from about 10 to about 40 atomic percent iron an amount of from about 50 to about 85 atomic percent and cobalt in an amount of from about 5 to 15 atomic percent.
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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) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |