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US4908065A
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Coating solution for use in the formation of metal oxide film
Assignee: Tokyo Ohka Kogyo Co Ltd
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Filing: 1988-01-05
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Granted: 1990-03-13
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Expires: 2008-01-05
Abstract
Abstract A coating solution for use in the formation of a metal oxide film is described. It is composed of (a) a beta -diketone, (b) at least one element or compound selected from the group consisting of elements capable of forming complexes with said beta -diketone, salts of the elements and hydrolysates of alkoxides of the elements, and (c) an aprotic polar solvent. As an alternative, it is composed of a metal complex of a beta -diketone and an aprotic polar solvent.
Inventors
- 👤 Katsuya Tanitsu
- 👤 Muneo Nakayama
- 👤 Yoshimi Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:25
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6326; H10P14/6342; C; C23; C23C; C23C18/00; C23C18/02; C23C18/12; C23C18/1204; C23C18/1208; C23C18/1216; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133345; H10P14/66; H10P14/668; H10P14/6681; H10P14/6682; H10P14/69; H10P14/692; H10P14/6921; H10P14/6922; H10P14/6923; H10P14/6938; H10P14/6939; H10P14/69393; H10P14/69397
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
55 words
A coating solution for use in the formation of a metal oxide film, comprising: (a) a β-diketone; (b) at least one element or compound selected from the group consisting of elements capable of forming complexes with said β-diketone, salts of the elements and hydrolysates of alkoxides of the elements; and (c) an aprotic polar solvent.
Claim 2
Dependent Claim
55 words
A coating solution for use in the formation of a metal oxide film, comprising: (a) a β-diketone; (b) at least one element or compound selected from the group consisting of elements capable of forming complexes with said β-diketone, salts of the elements and hydrolysates of alkoxides of the elements; and (c) an aprotic polar solvent.
Claim 3
Dependent Claim
51 words
The coating solution as claimed in claim 1, wherein said hydrolysates have each been obtained by adding a hydrolytic catalyst and a small amount of water to a liquid mixture which contains its corresponding alkoxide and the β-diketone and aprotic polar solvent, and then hydrolyzing the alkoxide in the liquid mixture.
Claim 4
Dependent Claim
64 words
A coating solution for use in the formation of a metal oxide film, comprising: (a) a β-diketone; (b) at least one element or compound selected from the group consisting of elements capable of forming complexes with said β-diketone, salts of the elements and hydrolysates of alkoxides of the elements; and (c) at least one aprotic polar solvent selected from N,N,N',N'-tetraethylsulfamide, N-methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone and 1,3-dimethyltetrahydro-2(1H)-pyrimidine.
Claim 5
Dependent Claim
64 words
A coating solution for use in the formation of a metal oxide film, comprising: (a) a β-diketone; (b) at least one element or compound selected from the group consisting of elements capable of forming complexes with said β-diketone, salts of the elements and hydrolysates of alkoxides of the elements; and (c) at least one aprotic polar solvent selected from N,N,N',N'-tetraethylsulfamide, N-methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone and 1,3-dimethyltetrahydro-2(1H)-pyrimidine.
Claim 6
Dependent Claim
36 words
A coating solution for use in the formation of a metal oxide film, comprising: (a) a β-diketone; (b) a metal complex of the same βdiketone as the first-mentioned βdiketone (a); and (c) an aprotic polar solvent.
Claim 7
Dependent Claim
36 words
A coating solution for use in the formation of a metal oxide film, comprising: (a) a β-diketone; (b) a metal complex of the same βdiketone as the first-mentioned βdiketone (a); and (c) an aprotic polar solvent.
Claim 8
Dependent Claim
25 words
A coating solution for use in the formation of a metal oxide film, comprising a metal complex of a βdiketone and an aprotic polar solvent.
Claim 9
Dependent Claim
25 words
A coating solution for use in the formation of a metal oxide film, comprising a metal complex of a βdiketone and an aprotic polar solvent.
References Cited (Backward Citations)
JPS55149920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-12 | 1993-09-11 | 1994-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-12 | 1997-09-11 | 1998-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-12 | 2001-09-11 | 2002-03-13 | $7700.00 | Window Closed / Lapsed |