US5763089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asymmetric glass-plastics safety glass pane
Assignee: Saint Gobain Vitrage SA
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Filing: 1995-10-06
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Granted: 1998-06-09
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Expires: 2015-10-06
Abstract
Abstract A glass-plastics bilayer safety glass pane, comprising a substrate of glass, and a complex sheet of plastics material comprising a layer of PVB and a film of polyester provided with a scratch-resistant and abrasion-resistant coating, and a layer of thermoplastic polyurethane incorporated between the glass substrate and the PVB layer.
Inventors
- 👤 Pierre Chaussade
- 👤 Catherine Heutte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:51
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10761; B32B17/10009; B32B17/10018; B32B17/10064; B32B17/10165; B32B17/1033; B32B17/10688; B32B17/1077; B32B17/10807; B32B17/10889; B32B27/00; B32B27/36; B32B2367/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31594; Y10T428/31598; Y10T428/31601; Y10T428/31627; Y10T428/3163; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
123 words
A safety glass pane comprising: (a) a glass substrate; (b) a multi-layer sheet of plastic material comprising: (i) a polyester layer having a first surface and a second surface, (ii) a scratch-resistant and abrasion-resistant coating bonded to the first surface of the polyester layer, and (iii) a layer of plasticized PVB bonded to the second surface of the polyester layer; and (c) a thermoplastic polyurethane layer incorporated between the glass substrate and the PVB layer of the multilayer sheet, the polyurethane layer bonding the glass substrate to the PVB layer, wherein a primer comprising an organosilane has been deposited on a surface of the glass substrate or a surface of the thermoplastic polyurethane layer, between the glass substrate and the thermoplastic polyurethane layer.
Claim 2
Dependent Claim
123 words
A safety glass pane comprising: (a) a glass substrate; (b) a multi-layer sheet of plastic material comprising: (i) a polyester layer having a first surface and a second surface, (ii) a scratch-resistant and abrasion-resistant coating bonded to the first surface of the polyester layer, and (iii) a layer of plasticized PVB bonded to the second surface of the polyester layer; and (c) a thermoplastic polyurethane layer incorporated between the glass substrate and the PVB layer of the multilayer sheet, the polyurethane layer bonding the glass substrate to the PVB layer, wherein a primer comprising an organosilane has been deposited on a surface of the glass substrate or a surface of the thermoplastic polyurethane layer, between the glass substrate and the thermoplastic polyurethane layer.
Claim 3
Dependent Claim
12 words
The pane according to claim 1, wherein the polyester layer comprises PET.
Claim 4
Dependent Claim
18 words
The pane according to claim 1, wherein the glass substrate comprises a sheet of annealed or toughened glass.
Claim 5
Dependent Claim
13 words
The pane according to claim 3, wherein the glass substrate is chemically toughened.
Claim 6
Dependent Claim
19 words
The pane according to claim 1, wherein the polyurethane layer has a thickness of from 0.05 to 3 mm.
Claim 7
Dependent Claim
16 words
The pane according to claim 1, wherein the glass substrate comprises a laminated structure of glass.
Claim 8
Dependent Claim
15 words
The pane according to claim 1, wherein the scratch-resistant and abrasion-resistant coating comprises an organopolysiloxane.
Claim 9
Dependent Claim
24 words
The pane according to claim 1, wherein the primer composition is selected from the group consisting of gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, gamma-mercaptopropyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane, gamma-chloropropyltrimethoxysilane, and vinyltrichlorosilane.
Claim 10
Dependent Claim
14 words
The pane according to claim 1, wherein said pane comprises only one glass substrate.
Claim 11
Dependent Claim
98 words
A safety glass pane, comprising: (a) a glass substrate; (b) a multi-layer sheet of plastic material comprising: (i) a polyester layer having a first surface and a second surface, (ii) a scratch-resistant and abrasion-resistant coating bonded to the first surface of the polyester layer, and (iii) a layer of plasticized PVB bonded to the second surface of the polyester layer; and (c) a thermoplastic polyurethane layer incorporated between the glass substrate and the PVB layer of the multi-layer sheet, the polyurethane layer bonding the glass substrate to the PVB layer, wherein the thermoplastic polyurethane layer comprises an organosilane.
Claim 12
Dependent Claim
98 words
A safety glass pane, comprising: (a) a glass substrate; (b) a multi-layer sheet of plastic material comprising: (i) a polyester layer having a first surface and a second surface, (ii) a scratch-resistant and abrasion-resistant coating bonded to the first surface of the polyester layer, and (iii) a layer of plasticized PVB bonded to the second surface of the polyester layer; and (c) a thermoplastic polyurethane layer incorporated between the glass substrate and the PVB layer of the multi-layer sheet, the polyurethane layer bonding the glass substrate to the PVB layer, wherein the thermoplastic polyurethane layer comprises an organosilane.
Claim 13
Dependent Claim
12 words
The pane according to claim 10, wherein the polyester layer comprises PET.
Claim 14
Dependent Claim
18 words
The pane according to claim 10, wherein the glass substrate comprises a sheet of annealed or toughened glass.
Claim 15
Dependent Claim
19 words
The pane according to claim 10, wherein the polyurethane layer has a thickness of from 0.05 to 3 mm.
Claim 16
Dependent Claim
16 words
The pane according to claim 10, wherein the glass substrate comprises a laminated structure of glass.
Claim 17
Dependent Claim
15 words
The pane according to claim 10, wherein the scratch-resistant and abrasion-resistant coating comprises an organopolysiloxane.
Claim 18
Dependent Claim
18 words
The pane according to claim 10, wherein said polyurethane layer has a thickness of at least 0.2 mm.
Claim 19
Dependent Claim
18 words
The pane according to claim 10, wherein said polyurethane has a thickness of from 0.1 to 3 mm.
Claim 20
Dependent Claim
18 words
The pane according to claim 10, wherein said polyurethane has a thickness of from 0.2 to 2 mm.
Claim 21
Dependent Claim
18 words
The pane according to claim 10, wherein said polyurethane has a thickness of from 0.2 to 1 mm.
Claim 22
Dependent Claim
11 words
The pane according to claim 10, wherein said polyurethane is cross-linked.
Claim 23
Dependent Claim
14 words
The pane according to claim 10, wherein said pane comprises only one glass substrate.
Claim 24
Independent Claim
88 words
A method comprising: interposing a thermoplastic polyurethane layer between a glass substrate and a multi-layer sheet; wherein said multi-layer sheet comprises: (i) a polyester layer having a first surface and a second surface, (ii) a scratch-resistant and abrasion-resistant coating bonded to the first surface of the polyester layer, and (iii) a layer of plasticized PVB bonded to the second surface of the polyester layer; and a surface of said glass sheet or a surface of said thermoplastic polyurethane having been treated with a primer composition comprising an organosilane.
Claim 25
Independent Claim
88 words
A method comprising: interposing a thermoplastic polyurethane layer between a glass substrate and a multi-layer sheet; wherein said multi-layer sheet comprises: (i) a polyester layer having a first surface and a second surface, (ii) a scratch-resistant and abrasion-resistant coating bonded to the first surface of the polyester layer, and (iii) a layer of plasticized PVB bonded to the second surface of the polyester layer; and a surface of said glass sheet or a surface of said thermoplastic polyurethane having been treated with a primer composition comprising an organosilane.
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) | 2001-06-08 | 2001-12-08 | 2002-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-08 | 2005-12-08 | 2006-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-08 | 2009-12-08 | 2010-06-09 | $7700.00 | Window Closed / Lapsed |