US3819346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for applying an inorganic tin coating to a glass surface
Assignee: GLASS CONTAINER Mfg INST Inc
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Filing: 1972-05-08
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Granted: 1974-06-25
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Expires: 1992-05-08
Abstract
Abstract An inorganic tin coating is applied to a glass surface by exposing the surface at elevated temperature, desirably at least 700*F., to a liquid comprising a tin chloride hydrate, for example an aqueous solution of stannic chloride pentahydrate. The process is especially useful for providing the ''''hot end coating'''' of a dual protective coating for glass containers comprising an inorganic ''''hot end coating'''' and a lubricious organic ''''cold end coating.
Inventors
- 👤 R Southwick
- 👤 E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:41
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C17/253; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/211; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/112
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
13 words
A method according to claim 1 wherein said hydrate is stannic chloride pentahydrate.
Claim 2
Dependent Claim
23 words
A method according to claim 2 wherein the temperature of said heated glass container is in the range of from 900* to 1,100*F.
Claim 3
Dependent Claim
101 words
In a method of imparting improved lubricity and scratch resistance to a glass container comprising the steps of contacting a heated container with a thermally decomposable tin compound to provide an inorganic tin coating, cooling the container, and contacting the cooled container with an organic material to provide a lubricious organic coating, the step of forming said inorganic tin coating by spraying onto the surface of said heated container at a temperature of greater than 700*F. with an aqueous solution of a tin chloride hydrate, said aqueous solution containing from about 40 to about 60 weight per cent of said hydrate.
Claim 4
Dependent Claim
13 words
A method according to claim 4 wherein said hydrate is stannic chloride pentahydrate.
Claim 5
Dependent Claim
25 words
A method according to claim 4 wherein the temperature of said heated glass container is in the range of from about 900* to 1, 100*F.
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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |