US4610867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material of oxygen ion conductor
Assignee: Yazaki Corp
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Filing: 1985-04-12
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Granted: 1986-09-09
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Expires: 2005-04-12
Abstract
Abstract Materials of oxygen ion conductors comprising CeO 2 -CaO type oxides wherein 5-60 mol % of CaO is mixed with CeO 2 having a fluorite structure, and composite oxides wherein CeO 2 of said CeO 2 -CaO type oxides is replaced by oxide of magnesium or aluminum by 5-10 mol %.
Inventors
- 👤 Tetsuro Seiyama
- 👤 Hiromichi Arai
- 👤 Toshiya Kunisaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:18
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/406; G01N27/407; G01N27/4073; C; C01; C01F; C01F17/00; C01F17/30; C01F17/32; H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/185; H01M8/00; H01M8/10; H01M8/12; H01M8/124; H01M8/1246; H01M8/126; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/207497
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
30 words
Materials of oxygen ion conductors comprising CeO 2 -CaO binary system oxides in which 20-60 mol % of CaO is mixed with CeO 2 having a structure of fluorite crystal.
Claim 2
Dependent Claim
30 words
Materials of oxygen ion conductors comprising CeO 2 -CaO binary system oxides in which 20-60 mol % of CaO is mixed with CeO 2 having a structure of fluorite crystal.
Claim 3
Dependent Claim
23 words
Materials of oxygen ion conductors as in claim 1 further comprising magnesium or aluminum oxides in 1-20 mol %, in a ternary system.
Claim 4
Dependent Claim
17 words
Materials as in claim 2 wherein said aluminum or magnesium oxides comprise 5-10% in a ternary system.
Claim 5
Dependent Claim
38 words
Materials, as in claim 3 wherein said aluminum or magnesium oxide addition comprises a ternary system comprising 20-60 mol % CaO, 38-70.5 mol % CeO 2 , and 2-9.5 mol % MgO or Al 2 O 3 .
Claim 6
Independent Claim
44 words
A method for preparing a solid electroyte for use in galvanic cells, fuel cells or oxygen sensors comprising mixing 20-60 mol % of CaO with CeO 2 , said CeO 2 having a structure of fluorite to form a mixture, and pelletizing said mixture.
Claim 7
Independent Claim
44 words
A method for preparing a solid electroyte for use in galvanic cells, fuel cells or oxygen sensors comprising mixing 20-60 mol % of CaO with CeO 2 , said CeO 2 having a structure of fluorite to form a mixture, and pelletizing said mixture.
Claim 8
Independent Claim
48 words
A method for preparing a solid electrolyte for use in galvanic cells, fuels cells or oxygen sensors comprising mixing 20-60 mol % CaO, 38-70.5 mol % CeO 2 , and 2-9.5 mol % MgO or Al 2 O 3 to form a mixture and a pelletizing said mixture.
Claim 9
Independent Claim
48 words
A method for preparing a solid electrolyte for use in galvanic cells, fuels cells or oxygen sensors comprising mixing 20-60 mol % CaO, 38-70.5 mol % CeO 2 , and 2-9.5 mol % MgO or Al 2 O 3 to form a mixture and a pelletizing said mixture.
Claim 10
Dependent Claim
30 words
Materials of oxygen ion conductors comprising 5-60 mol % of CaO mixed with CeO 2 having a fluorite structure, and 1-20 mol % of an oxide of magnesium or aluminum.
Claim 11
Dependent Claim
30 words
Materials of oxygen ion conductors comprising 5-60 mol % of CaO mixed with CeO 2 having a fluorite structure, and 1-20 mol % of an oxide of magnesium or aluminum.
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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) | 1989-09-08 | 1990-03-10 | 1990-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-08 | 1994-03-10 | 1994-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-08 | 1998-03-10 | 1998-09-09 | $7700.00 | Window Closed / Lapsed |