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US4920014A
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Zirconia film and process for preparing it
Assignee: Sumitomo Metal Mining Co Ltd
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Filing: 1988-02-26
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Granted: 1990-04-24
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Expires: 2008-02-26
Abstract
Abstract A zirconia film formed on a substrate and having substantially one or two kinds of particular planes such as (200), (111) or (111) planes only oriented in parallel to the surface of the substrate, and a process for preparing it. This zirconia film is dense, and improved in the thermal resistance, thermal insulation properties and corrosion resistance.
Inventors
- 👤 Toshio Hirai
- 👤 Hisanori Yamane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:19
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/10; H01M8/12; H01M8/124; H01M8/1246; H01M8/1253; C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/40; C23C16/405; C30; C30B; C30B25/00; C30B25/02; C30B29/00; C30B29/10; C30B29/16; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/22; C03C2218/00; C03C2218/10; C03C2218/15; C03C2218/152; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
32 words
A zirconia film, comprising: a zirconia film formed on a substrate, said film having substantially only one or two kinds of particular crystal planes oriented parallel to the surface of said substrate.
Claim 2
Dependent Claim
32 words
A zirconia film, comprising: a zirconia film formed on a substrate, said film having substantially only one or two kinds of particular crystal planes oriented parallel to the surface of said substrate.
Claim 3
Dependent Claim
29 words
The zirconia film of claim 1, wherein substantially (111) planes only are oriented parallel to the surface of said substrate and said zirconia film consists of substantially pure zirconia.
Claim 4
Dependent Claim
48 words
The zirconia film of claim 1, wherein substantially one or two kinds of crystal planes only, selected from the group consisting of (111) planes and (200) planes, are oriented parallel to the surface of said substrate and said zirconia film consists of a stabilized or partially stabilized zirconia.
Claim 5
Dependent Claim
21 words
The zirconia film of claim 3, wherein substantially (200) planes only are oriented in parallel to the surface of the substrate.
Claim 6
Dependent Claim
23 words
The zirconia film of claim 3, wherein substantially (200) planes and (111) planes only are oriented parallel to the surface of the substrate.
Claim 7
Dependent Claim
20 words
The zirconia film of claim 3, wherein substantially (111) planes only are oriented parallel to the surface of the substrate.
References Cited (Backward Citations)
JPH02160757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-23 | 1993-10-23 | 1994-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-23 | 1997-10-23 | 1998-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-23 | 2001-10-23 | 2002-04-24 | $7700.00 | Window Closed / Lapsed |