US4584245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated safety glass
Assignee: AGC Inc
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Filing: 1983-05-31
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Granted: 1986-04-22
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Expires: 2003-05-31
Abstract
Abstract Transparent or translucent laminated safety glass having an at least two layered structure comprising a synthetic resin layer having an exposed surface and a hard substrate layer wherein the exposed surface of the synthetic resin layer has a cross-linked structure of cross-linkable groups introduced and cross-linked in said surface.
Inventors
- 👤 Kazuhiko Kuga
- 👤 Hiroshi Washita
- 👤 Hiroyuki Watanabe
- 👤 Kohji Kurita
- 👤 Takeshi Harada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:56
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/10174; B32B17/10009; B32B17/10018; B32B17/1055; B32B17/10697; B32B17/1077; B32B17/10807; B32B17/10816; B32B17/10825; B32B17/10834; B32B17/10844; B32B17/10853; B32B17/10862; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0819; C08G18/0823; Y; Y10; Y10T; Y10T428/00; Y10T428/31; Y10T428/31504; Y10T428/31536; Y10T428/31551; Y10T428/31554; Y10T428/31598; Y10T428/31601; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
61 words
A transparent or translucent laminated safety glass having an at least two layered structure, comprising: a polyurethane thermoplastic resin layer deposited on a hard substance, the exposed surface of said polyurethane resin layer having a cross-linked structure which is formed by the light or moisture initiated cross-linking of cross-linkable functional groups, the resin of said exposed surface containing carboxylic acid groups.
Claim 2
Dependent Claim
61 words
A transparent or translucent laminated safety glass having an at least two layered structure, comprising: a polyurethane thermoplastic resin layer deposited on a hard substance, the exposed surface of said polyurethane resin layer having a cross-linked structure which is formed by the light or moisture initiated cross-linking of cross-linkable functional groups, the resin of said exposed surface containing carboxylic acid groups.
Claim 3
Dependent Claim
52 words
The laminated safety glass of claim 1, wherein the cross-linkable functional groups are introduced into the exposed surface of said thermoplastic resin layer by reacting the carboxylic acid groups which are within the polyurethane resin on the exposed surface of said layer with a compound which contains cross-linkable groups and epoxy groups.
Claim 4
Dependent Claim
36 words
The laminated safety glass of claim 2, wherein the cross-linkable functional groups in said compound which reacts with the carboxylic acid groups in said polyurethane resin are initiated in their cross-linking reaction by light or moisture.
Claim 5
Dependent Claim
37 words
The laminated safety glass of claim 3, wherein said compound containing epoxy groups and light initiated, cross-linkable functional groups is at least one compound selected from the group consisting of glycidoxy cinnamate, glycidoxy acrylate and glycidoxy methacrylate.
Claim 6
Dependent Claim
22 words
The laminated safety glass of claim 3, wherein said compound containing epoxy groups and moisture initiated, cross-linkable functional groups is glycidoxy alkyltrialkoxysilane.
Claim 7
Dependent Claim
17 words
The laminated safety glass of claim 1, wherein said hard substrate is a layer of inorganic glass.
Claim 8
Dependent Claim
31 words
The laminated safety glass of claim 1, wherein said hard substrate is a laminate of a pair of inorganic glass sheets having an intermediate film interposed between the two glass sheets.
Claim 9
Dependent Claim
67 words
A transparent or translucent laminated safety glass having an at least two layered structure, comprising: a polyurethane thermoplastic resin layer deposited on a hard substrate, the exposed surface of said polyurethane resin layer having a cross-linked structure which is formed by the light initiated cross-linking of cross-linkable functional groups selected from the group consisting of cinnamic acid groups, acrylic acid groups, methacrylic acid groups and combinations thereof.
Claim 10
Dependent Claim
67 words
A transparent or translucent laminated safety glass having an at least two layered structure, comprising: a polyurethane thermoplastic resin layer deposited on a hard substrate, the exposed surface of said polyurethane resin layer having a cross-linked structure which is formed by the light initiated cross-linking of cross-linkable functional groups selected from the group consisting of cinnamic acid groups, acrylic acid groups, methacrylic acid groups and combinations thereof.
Claim 11
Dependent Claim
17 words
The laminated safety glass of claim 2, wherein said hard substrate is a layer of inorganic glass.
Claim 12
Dependent Claim
31 words
The laminated safety glass of claim 2, wherein said hard substrate is a laminate of a pair of inorganic glass sheets having an intermediate film interposed between the two glass sheets.
Claim 13
Dependent Claim
50 words
A transparent or translucent laminated safety glass having an at least two layered structure, comprising: a polyurethane thermoplastic resin layer deposited on a hard substrate, the exposed surface of said polyurethane resin layer having a cross-linked structure which is formed by the moisture initiated cross-linking of cross-linkable alkoxysilyl functional groups.
Claim 14
Dependent Claim
50 words
A transparent or translucent laminated safety glass having an at least two layered structure, comprising: a polyurethane thermoplastic resin layer deposited on a hard substrate, the exposed surface of said polyurethane resin layer having a cross-linked structure which is formed by the moisture initiated cross-linking of cross-linkable alkoxysilyl functional groups.
Claim 15
Dependent Claim
17 words
The laminated safety glass of claim 11, wherein said hard substrate is a layer of inorganic glass.
Claim 16
Dependent Claim
31 words
The laminated safety glass of claim 11, wherein said hard substrate is a laminate of a pair of inorganic glass sheets having an intermediate film interposed between the two glass sheets.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |