US4937055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treatment for thin metal or semiconductor oxide coatings
Assignee: Andus Corp
•
Filing: 1989-01-13
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Granted: 1990-06-26
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Expires: 2009-01-13
Abstract
Abstract The adherablility of a thin coating of a metal or semiconductor oxide, such as indium tin oxide or silicon dioxide, is improved by treating the coating with an aqueous solution containing an effective amount of an active oxygen compound such as sodium hypochlorite or hydrogen peroxide.
Inventors
- 👤 Wilfred C. Kittler
- 👤 Darrell Stoddard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:10
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/82; C23C22/83; Y; Y10; Y10T; Y10T156/00; Y10T156/10
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
64 words
A method of treating an article having a thin coating of a metal or semiconductor oxide to improve its bondability, comprising the steps of: (a) providing an article having a thin coating of a metal or semiconductor oxide on a surface thereof, and (b) treating said coating with an aqueous solution consisting essentially of water and an effective amount of an active oxygen compound.
Claim 2
Independent Claim
64 words
A method of treating an article having a thin coating of a metal or semiconductor oxide to improve its bondability, comprising the steps of: (a) providing an article having a thin coating of a metal or semiconductor oxide on a surface thereof, and (b) treating said coating with an aqueous solution consisting essentially of water and an effective amount of an active oxygen compound.
Claim 3
Dependent Claim
13 words
A method according to claim 1 wherein said coating comprises indium tin oxide.
Claim 4
Dependent Claim
12 words
A method according to claim 1 wherein said coating comprises tin oxide.
Claim 5
Dependent Claim
12 words
A method according to claim 1 wherein said coating comprises indium oxide.
Claim 6
Dependent Claim
12 words
A method according to claim 1 wherein said coating comprises silicon dioxide.
Claim 7
Dependent Claim
18 words
A method according to claim 1 wherein said coating is between about 50 and about 10,000 Å thick.
Claim 8
Dependent Claim
14 words
A method according to claim 1 wherein said active oxygen compound is sodium hypochlorite.
Claim 9
Dependent Claim
24 words
A method according to claim 7 wherein the sodium hypochlorite is present in an amount between about 0.5 and about 15 volume per cent.
Claim 10
Dependent Claim
14 words
A method according to claim 1 wherein said active oxygen compound is hydrogen peroxide.
Claim 11
Dependent Claim
24 words
A method according to claim 9 wherein the hydrogen peroxide is present in an amount between about 0.1 and about 30 volume per cent.
Claim 12
Independent Claim
69 words
A method of making an improved bond to a thin coating of a metal or semiconductor oxide, comprising the steps of (a) providing an article having a thin coating of a metal or semiconductor oxide on a surface thereof; (b) treating said coating with an aqueous solution consisting essentially of water and an effective amount of an active oxygen compound; and (c) bonding an adherend to the treated coating.
Claim 13
Independent Claim
69 words
A method of making an improved bond to a thin coating of a metal or semiconductor oxide, comprising the steps of (a) providing an article having a thin coating of a metal or semiconductor oxide on a surface thereof; (b) treating said coating with an aqueous solution consisting essentially of water and an effective amount of an active oxygen compound; and (c) bonding an adherend to the treated coating.
Claim 14
Dependent Claim
13 words
A method according to claim 11, wherein said coating comprises indium tin oxide.
Claim 15
Dependent Claim
12 words
A method according to claim 11, wherein said coating comprises tin oxide.
Claim 16
Dependent Claim
12 words
A method according to claim 11, wherein said coating comprises silicon dioxide.
Claim 17
Dependent Claim
18 words
A method according to claim 11, wherein said coating is between about 50 and about 10,000 Å thick.
Claim 18
Dependent Claim
14 words
A method according to claim 11 wherein said active oxygen compound is sodium hypochlorite.
Claim 19
Dependent Claim
24 words
A method according to claim 16 wherein the sodium hypochlorite is present in an amount between about 0.5 and about 15 volume per cent.
Claim 20
Dependent Claim
14 words
A method according to claim 11 wherein said active oxygen compound is hydrogen peroxide.
Claim 21
Dependent Claim
24 words
A method according to claim 18 wherein the hydrogen peroxide is present in an amount between about 0.1 and about 30 volume per cent.
Claim 22
Dependent Claim
27 words
A method according to claim 11, wherein in said bonding step said adherend is a curable resin which is applied onto the treated coating and then cured.
Claim 23
Dependent Claim
25 words
A method according to claim 11, wherein in said bonding step said adherend is a further thin coating which is deposited onto the treated coating.
Claim 24
Dependent Claim
24 words
A method according to claim 1, wherein the metal or semiconductor oxide is a native oxide of titanium, tantalum, zirconium, aluminum, chromium, or hafnium.
Claim 25
Dependent Claim
48 words
A method according to claim 1, wherein the metal or semiconductor oxide is an oxide of silicon or germanium; a mixed semiconductor oxide; or a semiconductor oxynitride of the formula Si x N y O z , wherein x, y, and z are each less than about 2.
Claim 26
Dependent Claim
24 words
A method according to claim 11, wherein the metal or semiconductor oxide is a native oxide of titanium, tantalum, zirconium, aluminum, chromium, or hafnium.
Claim 27
Dependent Claim
48 words
A method according to claim 11, wherein the metal or semiconductor oxide is an oxide of silicon or germanium; a mixed semiconductor oxide; or a semiconductor oxynitride of the formula Si x N y O z , wherein x, y, and z are each less than about 2.
Claim 28
Dependent Claim
42 words
A method according to claim 1, wherein said active oxygen compound is selected from the group consisting of hydrogen peroxide; sodium hypochlorite; alkali metal perborates, persulfates, and percarbonates; peracids; peracid salts; peroxydiphosphate salts; sodium aluminum aminohydrogen peroxide; urea peroxyhydrate; and peroxypyrophosphate salts.
Claim 29
Dependent Claim
42 words
A method according to claim 11, wherein said active oxygen compound is selected from the group consisting of hydrogen peroxide; sodium hypochlorite; alkali metal perborates, persulfates, and percarbonates; peracids; peracid salts; peroxydiphosphate salts; sodium aluminum aminohydrogen peroxide; urea peroxyhydrate; and peroxypyrophosphate salts.
References Cited (Backward Citations)
US3935349A
Cited
US3888702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-25 | 1993-12-25 | 1994-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-25 | 1997-12-25 | 1998-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-25 | 2001-12-25 | 2002-06-26 | $7700.00 | Window Closed / Lapsed |