US3959565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tin oxide coating
Assignee: NU-CHERRY Corp
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Filing: 1974-09-12
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Granted: 1976-05-25
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Expires: 1994-09-12
Abstract
Abstract A sheet of glass coated with SnOx by intermittent spraying of a mixture of materials in non-aqueous solution and in an oxidizing atmosphere, while maintaining the glass at a fixed temperature by supporting the glass in molten liquid at a controlled temperature, the spraying being conducted in successive passes involving small amounts of spray per pass, and the sheet of glass moving continuously along a pool of the molten liquid during the spraying process.
Inventors
- 👤 John F. Jordan
- 👤 Curtis M. Lampkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:29
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/3411; C03C17/3429; C03C17/3464; C03C17/347; C03C17/3417; H; H10; H10F; H10F71/00; H10F71/138; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/211; C03C2217/228; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/112; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
122 words
A method of forming a conductive film of SnO x on a window glass surface comprising: maintaining the temperature of said surface constant at a temperature of about 950°F by floating said glass in a heated liquid bath; spraying onto said glass surface an anhydrous solution containing anhydrous SnCl 2 ; said spraying being conducted in an oxygen containing atmosphere, in successive, intermittent passes over said surface, each of said passes spraying only a portion of said glass surface at any instant of time, and at a rate of spray so that said temperature remains essentially constant; said spraying further being conducted for a total time sufficient to form a film of SnO x of about 0.3 to 0.6 microns in thickness.
Claim 2
Independent Claim
122 words
A method of forming a conductive film of SnO x on a window glass surface comprising: maintaining the temperature of said surface constant at a temperature of about 950°F by floating said glass in a heated liquid bath; spraying onto said glass surface an anhydrous solution containing anhydrous SnCl 2 ; said spraying being conducted in an oxygen containing atmosphere, in successive, intermittent passes over said surface, each of said passes spraying only a portion of said glass surface at any instant of time, and at a rate of spray so that said temperature remains essentially constant; said spraying further being conducted for a total time sufficient to form a film of SnO x of about 0.3 to 0.6 microns in thickness.
Claim 3
Dependent Claim
30 words
The method according to claim 1, wherein said solution is in the proportions: 250. ml methanol
0.7 gm phenylhydrazene hydrochloride
3.0 gm ammonium bifluoride (NH.sub.4 FHF)
70. gm SnCl.sub.2 (anhydrous).
Claim 4
Dependent Claim
47 words
A sheet of glass coated with SnO x according to the method of claim 1 and having a resistivity in the range 8 to 17 ohms per square, with transmissivity of visible light in the range 70 to 80% and reflectivity of infra-red radiation of about 80%.
Claim 5
Dependent Claim
21 words
The method of claim 1, wherein said solution includes a non-aqueous solvent, a quantity of anhydrous SnCl 2 and a fluoride.
Claim 6
Dependent Claim
19 words
The method according to claim 1, wherein said anhydrous solution includes methanol, ammonium bifluoride and anhydrous SnCl 2 .
Claim 7
Independent Claim
163 words
The method of producing a film of SnO x on a glass substrate comprising: spraying an anhydrous solution against a surface of said substrate in an oxygen containing atmosphere; maintaining said surface at a temperature of about 950°F by moving said substrate along a tank of molten material, said material having a temperature selected to maintain said surface at a temperature of about 950°F during said spraying; said solution including an anhydrous solvent, a fluorine containing material and a quantity of anhydrous SnCl 2 ; said spraying being conducted in repeated, intermittent passes traversely over said surface, each of said passes spraying only a portion of said glass surface at any instant of time, and at a sufficiently small rate of spray so that said molten material is able to supply heat to said glass at a rate sufficient to maintain the temperature of said surface essentially constant during the spraying; and said film being sprayed to a thickness of approximately .5 microns.
Claim 8
Independent Claim
163 words
The method of producing a film of SnO x on a glass substrate comprising: spraying an anhydrous solution against a surface of said substrate in an oxygen containing atmosphere; maintaining said surface at a temperature of about 950°F by moving said substrate along a tank of molten material, said material having a temperature selected to maintain said surface at a temperature of about 950°F during said spraying; said solution including an anhydrous solvent, a fluorine containing material and a quantity of anhydrous SnCl 2 ; said spraying being conducted in repeated, intermittent passes traversely over said surface, each of said passes spraying only a portion of said glass surface at any instant of time, and at a sufficiently small rate of spray so that said molten material is able to supply heat to said glass at a rate sufficient to maintain the temperature of said surface essentially constant during the spraying; and said film being sprayed to a thickness of approximately .5 microns.
Claim 9
Dependent Claim
15 words
The method according to claim 6, wherein said fluorine containing material is NH 4 FHF.
Claim 10
Dependent Claim
14 words
The method according to claim 6, wherein said fluorine containing material is a salt.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |