Patent US3978249A successfully refreshed from Google Patents.
US3978249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing intricate metal designs on glass
Assignee: METALIZED GLASS Inc
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Filing: 1974-04-29
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Granted: 1976-08-31
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Expires: 1994-04-29
Abstract
Abstract A method is disclosed for producing intricate metal designs bonded to glass such as required in electrical resistance heating circuits, microwave oven panel shields and the like. The method includes the application to a sheet of glass of the negative of the desired design by silk screening or other screening techniques utilizing a screenable pasting agent which screens through the negative pattern and adheres temporarily to the glass. The entire sheet of glass is then coated with the desired metal, usually aluminum, according to known metallizing techniques in which flame-atomized metal is applied to the heated glass sheet and thus bonds thereto. The metallized surface is then brushed with wire rotary brushes which remove the metal from those areas where the screenable pasting agent has been applied. After washing, further wet brushing, rinsing and drying, the positive desired design in metal remains securely bonded to the glass.
Inventors
- 👤 william C. Cooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:37
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/76; H05B6/766; C; C03; C03C; C03C17/00; C03C17/06; C03C17/09; H05B3/00; H05B3/84; C03C2218/00; C03C2218/30; C03C2218/34; H05B2203/00; H05B2203/017
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
The method of producing designs of metal on glass comprising, applying a screenable pasting agent comprising a mixture of talc or kaolin and sodium silicate in water to one surface of a sheet of glass through a screen to produce the negative of the desired design, heating said sheet of glass, metallizing said one surface of said glass sheet including the portions thereof covered with said pasting agent to form a coating of metal thereon, and brushing the one surface of said glass sheet to remove the applied pasting agent and the portion of said metal coating overlying said pasting agent to provide the positive of the desired design in metal securely bonded to said surface of said glass sheet.
Claim 2
Independent Claim
120 words
The method of producing designs of metal on glass comprising, applying a screenable pasting agent comprising a mixture of talc or kaolin and sodium silicate in water to one surface of a sheet of glass through a screen to produce the negative of the desired design, heating said sheet of glass, metallizing said one surface of said glass sheet including the portions thereof covered with said pasting agent to form a coating of metal thereon, and brushing the one surface of said glass sheet to remove the applied pasting agent and the portion of said metal coating overlying said pasting agent to provide the positive of the desired design in metal securely bonded to said surface of said glass sheet.
Claim 3
Dependent Claim
26 words
The method of claim 1 in which the removal of said pasting agent and the overlying metal is accomplished by brushing with a rotary wire brush.
Claim 4
Dependent Claim
20 words
The method of claim 2 in which, subsequent to said brushing said sheet is washed, again brushed, rinsed and dried.
Claim 5
Dependent Claim
19 words
The method of claim 3 in which said second brushing utilizes brushes with softer bristles than said first brushing.
Claim 6
Dependent Claim
23 words
The method of claim 2 in which the metal is applied to said heated glass sheet by atomizing the metal in a flame.
Claim 7
Dependent Claim
11 words
The method of claim 5 in which said metal is aluminum.
Claim 8
Dependent Claim
38 words
The method of claim 1 in which said pasting agent comprises a mixture of about 45 parts by weight of talc or kaolin and 5 parts by weight of sodium silicate in 50 parts by weight of water.
Claim 9
Dependent Claim
26 words
The method of claim 7 in which the removal of said pasting agent and the overlying metal is accomplished by brushing with a rotary wire brush.
Claim 10
Dependent Claim
19 words
The method of claim 1 in which the coating of metal is from 1 to 3 mils in thickness.
Claim 11
Independent Claim
126 words
A method of producing designs of metal on glass comprising, applying a screenable pasting agent comprising a mixture of talc or kaolin and sodium silicate in water to one surface of a sheet of glass through a screen to produce the negative of the desired design, heating said glass sheet, metallizing said one surface of said glass sheet including the portion thereof covered with said pasting agent in amounts to form a metal coating of at least 1 mil in thickness and brushing said one surface of said glass sheet to remove the applied pasting agent and the portion of said metal coating overlying said pasting agent to provide the positive of the desired design in metal securely bonded to said surface of said glass sheet.
Claim 12
Independent Claim
126 words
A method of producing designs of metal on glass comprising, applying a screenable pasting agent comprising a mixture of talc or kaolin and sodium silicate in water to one surface of a sheet of glass through a screen to produce the negative of the desired design, heating said glass sheet, metallizing said one surface of said glass sheet including the portion thereof covered with said pasting agent in amounts to form a metal coating of at least 1 mil in thickness and brushing said one surface of said glass sheet to remove the applied pasting agent and the portion of said metal coating overlying said pasting agent to provide the positive of the desired design in metal securely bonded to said surface of said glass sheet.
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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |