US5076865A
Expired / Lapsed
US
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Amorphous aluminum alloys
Assignee: YKK Corp
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Filing: 1989-10-13
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Granted: 1991-12-31
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Expires: 2009-10-13
Abstract
Abstract An amorphous aluminum-valve metal alloy with special characteristics such as high corrosion resistance, high wear resistance and coinsiderable toughness, consisting of Al and at least one element selected from valve metals of Ti and Zr, a portion of the set forth refractory metals being allowed to be substituted with at least one element selected from Mo, W, Ta and Nb.
Inventors
- 👤 Koji Hashimoto
- 👤 Hideaki Yoshioka
- 👤 Katsuhiko Asami
- 👤 Asahi Kawashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:38
CPC Classifications
C; C22; C22C; C22C21/00; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C22C45/00; C22C45/08; C23C14/22; C23C14/34; C23C14/3464
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
An amorphous aluminum-valve metal alloy being composed of an amorphous single phase with special characteristics including high corrosion resistance, high wear resistance and considerable toughness, said alloy consisting of at least 5 at % of Zr and 40-69 at % of the sum of Zr and Ti with the balance being substantially Al.
Claim 2
Dependent Claim
53 words
An amorphous aluminum-valve metal alloy being composed of an amorphous single phase with special characteristics including high corrosion resistance, high wear resistance and considerable toughness, said alloy consisting of at least 5 at % of Zr and 40-69 at % of the sum of Zr and Ti with the balance being substantially Al.
Claim 3
Dependent Claim
79 words
An amorphous aluminum-valve metal alloy being composed of an amorphous single phase with special characteristics including high corrosion resistance, high wear resistance and considerable toughness, said alloy consisting of less than 5 at % of at least one element selected from the group of Mo, W, Ta and Nb and 40-69 at % of the sum of Zr and at least one element selected from the group of Mo, W, Ta and Nb with its balance being substantially Al.
Claim 4
Dependent Claim
79 words
An amorphous aluminum-valve metal alloy being composed of an amorphous single phase with special characteristics including high corrosion resistance, high wear resistance and considerable toughness, said alloy consisting of less than 5 at % of at least one element selected from the group of Mo, W, Ta and Nb and 40-69 at % of the sum of Zr and at least one element selected from the group of Mo, W, Ta and Nb with its balance being substantially Al.
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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) | 1994-12-30 | 1995-07-01 | 1995-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-30 | 1999-07-01 | 1999-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-30 | 2003-07-01 | 2003-12-31 | $7700.00 | Window Closed / Lapsed |