Patent US4129434A successfully refreshed from Google Patents.
US4129434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming a metal oxide coating
Assignee: AGC Glass Europe SA
•
Filing: 1975-08-19
•
Granted: 1978-12-12
•
Expires: 1995-08-19
Abstract
Abstract A metal oxide coating is formed on a vitreous or non-vitreous substrate by applying a solution containing at least one metal compound to the substrate and then heating the coated substrate to convert the compound in situ to leave a coating of metal acetyl acetonate or a mixture of metal acetyl acetonates in a solvent including an aprotonic solvent, a substituted or unsubstituted monocarboxylic acid solvent, an amine or diamine solvent, or a mixture of two or more solvents selected from these groups.
Inventors
- 👤 Emile Plumat
- 👤 Robert Posset
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:24
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/229; C03C2217/23; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/112
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
157 words
In a process for forming a metal oxide coating on a substrate wherein a solution of at least one metal compound is applied to the substrate and said compound is converted in situ by heating to a temperature within the range of 300° C. to 700° C. to convert said metal compound and leave a coating of at least one metal oxide, the step of coating the substrate with a solution of an acetylacetonate of a metal selected from the group: Fe, Ni, Co, Zn, V, Mn, Cu, In, Al, Ti, Zr, Th, Cr, Mg, Bi, Y, W, Ce or a mixture of acetylacetonates of two or more metals of such group in a solvent, the improvement wherein the solvent is selected from the group consisting of ethylene diamine, propylene diamine, butylamine, propylamine, dimethylformamide, dimethylacetamide, tetramethylurea, dimethylsulfoxide, acetonitrile, nitrobenzene, ethylene carbonate, tetramethylenesulfone, hexamethylphosphoramide, or a mixture of two or more solvents selected from solvents of that group.
Claim 2
Dependent Claim
157 words
In a process for forming a metal oxide coating on a substrate wherein a solution of at least one metal compound is applied to the substrate and said compound is converted in situ by heating to a temperature within the range of 300° C. to 700° C. to convert said metal compound and leave a coating of at least one metal oxide, the step of coating the substrate with a solution of an acetylacetonate of a metal selected from the group: Fe, Ni, Co, Zn, V, Mn, Cu, In, Al, Ti, Zr, Th, Cr, Mg, Bi, Y, W, Ce or a mixture of acetylacetonates of two or more metals of such group in a solvent, the improvement wherein the solvent is selected from the group consisting of ethylene diamine, propylene diamine, butylamine, propylamine, dimethylformamide, dimethylacetamide, tetramethylurea, dimethylsulfoxide, acetonitrile, nitrobenzene, ethylene carbonate, tetramethylenesulfone, hexamethylphosphoramide, or a mixture of two or more solvents selected from solvents of that group.
Claim 3
Dependent Claim
32 words
In a process according to claim 1, wherein the substrate is preheated to a sufficiently high temperature to provide the heat required to effect said conversion of the metal compound or compounds.
Claim 4
Dependent Claim
15 words
In a process according to claim 1, wherein the solution is applied in droplet form.
Claim 5
Dependent Claim
21 words
In a process according to claim 1, wherein the solution is applied to a substrate which is at least partly vitreous.
Claim 6
Dependent Claim
21 words
In a process according to claim 4, wherein the solution is applied so as to form a light-transmitting metal oxide coating.
Claim 7
Dependent Claim
24 words
In a process according to claim 5, wherein the formed metal oxide coating has a thickness in the range of 200 to 1000 A.
Claim 8
Dependent Claim
24 words
In a process according to claim 1, wherein the substrate is flat glass which is in course of being manufactured as a continuous ribbon.
Claim 9
Dependent Claim
30 words
A process according to claim 7, wherein the solution is applied to the glass ribbon at a zone where its temperature is in the range of 450° to 650° C.
Claim 10
Dependent Claim
30 words
A process according to claim 1, wherein the solution applied to the substrate contains no water or contains distilled water in a proportion of not more than 10% by volume.
References Cited (Backward Citations)
US2859131A
Cited
US2976285A
Cited
US3081200A
Cited
US3410710A
Cited
US3107177A
Cited
US3411934A
Cited
US3645778A
Cited
US3689304A
Cited
US3652246A
Cited
US3711322A
Cited
US3754975A
Cited
US3850665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-11 | 1982-06-12 | 1982-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-11 | 1986-06-12 | 1986-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-11 | 1990-06-12 | 1990-12-12 | $7700.00 | Window Closed / Lapsed |