US4500567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming tin oxide coating
Assignee: Nippon Sheet Glass Co Ltd
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Filing: 1983-12-19
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Granted: 1985-02-19
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Expires: 2003-12-19
Abstract
Abstract A method for forming a fluorine-containing tin oxide coating on the surface of a substrate which comprises contacting the heated surface of the substrate with a vapor of monobutyltin trichloride or a mixed vapor of monobutyltin trichloride and a doping agent composed of a fluorine-containing compound of the following formula XCHF.sub.2 wherein X represents a fluorine atom, a chlorine atom, or a hydrocarbon group consisting only of carbon and hydrogen atoms, to oxidize and decompose the vapor or the mixed vapor thermally and deposit tin oxide or fluorine-containing tin oxide respectively thereon.
Inventors
- 👤 Yukihiro Kato
- 👤 Hideo Kawahara
- 👤 Masato Hyohdou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:23
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5025; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/245; C03C17/2453; C04B41/80; C04B41/81; C04B41/85; C04B41/87; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/40; C23C16/407
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
In a method for forming a fluorine-containing tin oxide coating on the surface of a substrate selected from the group consisting of glass, ceramics and metals which comprises contacting the heated surface of the substrate with a mixed vapor of a tin compound and a doping agent composed of a fluorine-containing compound to oxidize and decompose the mixed vapor thermally and deposit fluorine-containing tin oxide thereon; the improvement wherein monobutyltin trichloride is used as the tin compound, and a fluorine compound of the following formula XCHF.sub.2 wherein X represents a fluorine atom, a chlorine atom, or a hydrocarbon group consisting only of carbon and hydrogen atoms, is used as the doping agent.
Claim 2
Dependent Claim
112 words
In a method for forming a fluorine-containing tin oxide coating on the surface of a substrate selected from the group consisting of glass, ceramics and metals which comprises contacting the heated surface of the substrate with a mixed vapor of a tin compound and a doping agent composed of a fluorine-containing compound to oxidize and decompose the mixed vapor thermally and deposit fluorine-containing tin oxide thereon; the improvement wherein monobutyltin trichloride is used as the tin compound, and a fluorine compound of the following formula XCHF.sub.2 wherein X represents a fluorine atom, a chlorine atom, or a hydrocarbon group consisting only of carbon and hydrogen atoms, is used as the doping agent.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein the doping agent is trifluoromethane or monochlorodifluoromethane.
Claim 4
Dependent Claim
18 words
The method of claim 1 wherein the doping agent is a 1,1-difluoroalkane having 2 to 4 carbon atoms.
Claim 5
Dependent Claim
10 words
The method of claim 3 wherein the 1,1-difluoroalkane is 1,1-difluoroethane.
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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) | 1988-02-19 | 1988-08-20 | 1989-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-19 | 1992-08-20 | 1993-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-19 | 1996-08-20 | 1997-02-19 | $7700.00 | Window Closed / Lapsed |