US4632877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated safety glass
Assignee: AGC Inc
•
Filing: 1984-11-29
•
Granted: 1986-12-30
•
Expires: 2004-11-29
Abstract
Abstract Transparent or translucent laminated safety glass having an at least two-layered structure, in which one outer layer is a relatively soft synthetic resin layer and the other outer layer is a hard substrate layer, characterized in that said relatively soft synthetic resin layer comprises: a surface layer of a reformed polyurethane type thermoplastic resin obtained by impregnating a polymerizable compound containing a polymerizable unsaturated group into a polyurethane type thermoplastic resin and polymerizing the compound; and an inner layer of a polyurethane type thermoplastic resin which is continuous or non-continuous with said surface layer.
Inventors
- 👤 Hiroyuki Watanabe
- 👤 Hiroshi Washita
- 👤 Toshio Ichiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:02
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10706; B32B17/10009; B32B17/10018; B32B17/1077; B32B17/10807; B32B17/10899; B32B17/10908; B32B17/10917; Y; Y10; Y10T; Y10T428/00; Y10T428/31; Y10T428/31504; Y10T428/31536; Y10T428/31551; Y10T428/31554; Y10T428/31598; Y10T428/31601
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
91 words
Transparent or translucent laminated safety glass having an at least two-layered structure, in which one outer layer is a relatively soft synthetic resin layer and the other outer layer is a hard substrate layer, said relatively soft synthetic resin layer comprising: a surface layer of a reformed polyurethane type thermoplastic resin obtained by impregnating a polymerizable compound containing a polymerizable unsaturated group into a polyurethane type thermoplastic resin and polymerizing the compound; and an inner layer of a polyurethane type thermoplastic resin which is continuous or non-continuous with said surface layer.
Claim 2
Dependent Claim
91 words
Transparent or translucent laminated safety glass having an at least two-layered structure, in which one outer layer is a relatively soft synthetic resin layer and the other outer layer is a hard substrate layer, said relatively soft synthetic resin layer comprising: a surface layer of a reformed polyurethane type thermoplastic resin obtained by impregnating a polymerizable compound containing a polymerizable unsaturated group into a polyurethane type thermoplastic resin and polymerizing the compound; and an inner layer of a polyurethane type thermoplastic resin which is continuous or non-continuous with said surface layer.
Claim 3
Dependent Claim
18 words
The laminated safety glass according to claim 1, wherein said polymerizable compound is a polyfunctional acrylate or methacrylate.
Claim 4
Dependent Claim
27 words
The laminated safety glass according to claim 2, wherein said polyfunctional acrylate or methacrylate is a polyester of a polyhydric alcohol with acrylic acid or methacrylic acid.
Claim 5
Dependent Claim
17 words
The laminated safety glass according to claim 1, wherein said polymerizable compound is polymerized by ultraviolet radiation.
Claim 6
Dependent Claim
27 words
The laminated safety glass according to claim 1, wherein said polyurethane type thermoplastic resin is a polyurethane type thermoplastic resin containing no substantial free carboxylic acid groups.
Claim 7
Independent Claim
75 words
A method for manufacturing transparent or translucent laminated safety glass having an at least two-layered structure, in which one outer layer is a relatively soft synthetic rsin layer and the other outer layer is a hard substrate layer, wherein said relatively soft synthetic resin layer is formed by impregnating a polymerizable compound containing a polymerizable unsaturated group into one surface of a polyurethane type thermoplastic resin constituting the laminated safety glass, and polymerizing said compound.
Claim 8
Independent Claim
75 words
A method for manufacturing transparent or translucent laminated safety glass having an at least two-layered structure, in which one outer layer is a relatively soft synthetic rsin layer and the other outer layer is a hard substrate layer, wherein said relatively soft synthetic resin layer is formed by impregnating a polymerizable compound containing a polymerizable unsaturated group into one surface of a polyurethane type thermoplastic resin constituting the laminated safety glass, and polymerizing said compound.
Claim 9
Dependent Claim
21 words
The method for manufacturing laminated safety glass according to claim 6, wherein said polymerizable compound is a polyfunctional acrylate or methacrylate.
Claim 10
Dependent Claim
30 words
The method for manufacturing laminated safety glass according to claim 7, wherein said polyfunctional acrylate or methacrylate is a polyester of a polyhydric alcohol with acrylic acid or methacrylic acid.
Claim 11
Dependent Claim
20 words
The method for manufacturing laminated safety glass according to claim 6, wherein said polymerizable compound is polymerized by ultraviolet radiation.
Claim 12
Dependent Claim
29 words
The method for manufacturing laminated safety glass according to claim 6, wherein polyurethane type thermoplastic resin is a polyurethane type thermoplastic resin containing no substantial free carboxylic acid group.
Claim 13
Independent Claim
92 words
A method for manufacturing transparent or translucent laminated safety glass having an at least two-layered structure, in which one outer layer is a relatively soft synthetic resin layer and the other outer layer is a hard substrate layer, wherein a polymerizable compound having a polymerizable unsaturated group is impregnated into one side of a sheet or film of a polyurethane type thermoplastic resin, and then polymerized, and that said sheet or film is then laminated on said hard substrate layer so that the other side, which is not reformed, faces said substrate.
Claim 14
Independent Claim
92 words
A method for manufacturing transparent or translucent laminated safety glass having an at least two-layered structure, in which one outer layer is a relatively soft synthetic resin layer and the other outer layer is a hard substrate layer, wherein a polymerizable compound having a polymerizable unsaturated group is impregnated into one side of a sheet or film of a polyurethane type thermoplastic resin, and then polymerized, and that said sheet or film is then laminated on said hard substrate layer so that the other side, which is not reformed, faces said substrate.
Claim 15
Dependent Claim
21 words
The method for manufacturing laminated safety glass according to claim 11, wherein said polymerizable compound is a polyfunctional acrylate or methacrylate.
Claim 16
Dependent Claim
30 words
The method for manufacturing laminated safety glass according to claim 12 wherein said polyfunctional acrylate or methacrylate is a polyester of a polyhydric alcohol with acrylic acid or methacrylic acid.
Claim 17
Dependent Claim
20 words
The method for manufacturing laminated safety glass according to claim 11, wherein said polymerizable compound is polymerized by ultraviolet radiation.
Claim 18
Dependent Claim
30 words
The method for manufacturing laminated saftey glass according to claim 11, wherein said polyurethane type thermoplastic resin is a polyurethane type thermoplastic resin containing no substantial free carboxylic acid group.
References Cited (Backward Citations)
GB1576394A
Cited
US4584245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-29 | 1990-06-30 | 1990-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-29 | 1994-06-30 | 1994-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-29 | 1998-06-30 | 1998-12-30 | $7700.00 | Window Closed / Lapsed |