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US4960618A
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Process for formation of metal oxide film
Assignee: Tokyo Ohka Kogyo Co Ltd
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Filing: 1990-01-08
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Granted: 1990-10-02
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Expires: 2010-01-08
Abstract
Abstract A process for the formation of a metal oxide film on a substrate by coating the substrate with a coating solution and heating the substrate to a temperature of at least 100 DEG C. The coating solution 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
2026-10-29 03:10
CPC Classifications
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; H; H10; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6326; H10P14/6342; H10P14/6346; H10P14/69; H10P14/692; H10P14/6921; H10P14/69215; H10P14/6938; H10P14/6939; H10P14/69391; H10P14/69393
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
96 words
A process for the formation of a metal oxide film, which comprises the following consecutive steps: (i) coating a substrate with a coating solution for use in the formation of the metal oxide film, said solution 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; and (ii) subjecting the thus-coated substrate to a heat treatment at a temperature of at least 100° C.
Claim 2
Dependent Claim
96 words
A process for the formation of a metal oxide film, which comprises the following consecutive steps: (i) coating a substrate with a coating solution for use in the formation of the metal oxide film, said solution 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; and (ii) subjecting the thus-coated substrate to a heat treatment at a temperature of at least 100° C.
Claim 3
Dependent Claim
14 words
The process as claimed in claim 1, wherein the coating is effected by printing.
References Cited (Backward Citations)
JPS55149920A
Cited
US4617206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-01 | 1994-04-02 | 1994-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-01 | 1998-04-02 | 1998-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-01 | 2002-04-02 | 2002-10-02 | $7700.00 | Window Closed / Lapsed |