US4513543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of coated glass
Assignee: Pilkington Group Ltd
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Filing: 1983-03-22
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Granted: 1985-04-30
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Expires: 2003-03-22
Abstract
Abstract A metallic layer is removed from a coated glass surface (3) by subjecting the coated glass to the abrasive action of a stripping wheel (7) comprising a particulate abrasive in a porous matrix of polyvinyl formal.
Inventors
- 👤 Jack Lawrenson
- 👤 Kevin M. Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:19
CPC Classifications
B; B24; B24B; B24B1/00; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/32; E; E06; E06B; E06B3/00; E06B3/66; E06B3/673; E06B3/67339; E06B3/67365; H; H05; H05K; H05K3/00; H05K3/02; H05K3/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/24926
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
44 words
A method of removing a metallic coating layer from a coated glass surface, comprising subjecting the metallic coating layer to the abrasive action of a surface of a stripping material which surface comprises a particulate abrasive carried in a porous matrix of polyvinyl formal.
Claim 2
Independent Claim
44 words
A method of removing a metallic coating layer from a coated glass surface, comprising subjecting the metallic coating layer to the abrasive action of a surface of a stripping material which surface comprises a particulate abrasive carried in a porous matrix of polyvinyl formal.
Claim 3
Dependent Claim
78 words
A method according to claim 1 of removing a copper coating layer from a coated glass surface, comprising subjecting the copper coating layer to an abrasive action of a surface of a stripping material which surface comprises a particulate abrasive carried in a porous matrix of polyvinyl formal to remove the copper coating layer with no more than 10 mg/m 2 of residual copper and no more than 2% of residual organic nitrogen remaining on the glass surface.
Claim 4
Independent Claim
46 words
A method of removing a metallic coating layer from a coated glass surface, comprising subjecting the metallic coating layer to the abrasive action of the surface of a rotating stripping wheel which surface comprises fused alumina abrasive grit carried in a porous matrix of polyvinyl formal.
Claim 5
Independent Claim
46 words
A method of removing a metallic coating layer from a coated glass surface, comprising subjecting the metallic coating layer to the abrasive action of the surface of a rotating stripping wheel which surface comprises fused alumina abrasive grit carried in a porous matrix of polyvinyl formal.
Claim 6
Independent Claim
65 words
A method of preparing a coated glass sheet having a metallic coating layer which sheet is to be edge-sealed into a multiple glazing unit, comprising subjecting a marginal band of the metallic coating layer to the abrasive action of a surface of a stripping material which surface comprises a particulate abrasive carried in a porous matrix of polyvinyl formal, to prepare the sheet for edge-sealing.
Claim 7
Independent Claim
65 words
A method of preparing a coated glass sheet having a metallic coating layer which sheet is to be edge-sealed into a multiple glazing unit, comprising subjecting a marginal band of the metallic coating layer to the abrasive action of a surface of a stripping material which surface comprises a particulate abrasive carried in a porous matrix of polyvinyl formal, to prepare the sheet for edge-sealing.
Claim 8
Dependent Claim
43 words
A method according to claim 4, comprising subjecting the marginal band of the metallic coating layer to the abrasive action of the surface of a rotating stripping wheel which surface comprises fused alumina abrasive grit carried in a porous matrix of polyvinyl formal.
Claim 9
Dependent Claim
110 words
A method according to claim 5 of preparing a coated glass sheet which is to be edge-sealed into a multiple glazing unit, comprising subjecting a marginal band of a copper coating layer to the abrasive action of a rotating stripping wheel whose surface comprises fused alumina abrasive grit carried in a porous matrix of polyvinyl formal to remove the copper coating layer with no more than 10 mg/m 2 of residual copper and no more than 2% of residual organic nitrogen remaining on the abraded material band of the glass surface, the rotating stripping wheel when rotating at a linear surface speed of 5 to 40 m/s, running without bounce.
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) | 1988-04-29 | 1988-10-29 | 1989-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-29 | 1992-10-29 | 1993-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-29 | 1996-10-29 | 1997-04-30 | $7700.00 | Window Closed / Lapsed |