US4583815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat wave shielding lamination
Assignee: Toyota Central R&D Labs Inc
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Filing: 1983-06-30
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Granted: 1986-04-22
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Expires: 2003-06-30
Abstract
Abstract A heat wave shielding lamination consisting of at least two In2O3 shield layers containing different amounts of Sn is provided on the surface of a glass substrate to provide shielding against heat waves without causing heat wave pollution in the surrounding environment. The amount of tin contained in the respective layers increases with increasing proximity to the substrate. The heat wave shielding has good transmittance to visible light and good shielding effect against rays in the infrared spectrum by virtue of the fact that the shield layers containing different amounts of Sn exhibit maximum infrared absorption at different wavelengths to give high infrared ray absorption over a wide wavelength range. It also suppresses the reflection of heat waves into the surrounding environment since each shield layer of the lamination absorbs the infrared rays reflected by Drude reflection from any shield layer containing more Sn than itself.
Inventors
- 👤 Yasunori Taga
- 👤 Yutaka Sawada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:04
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10559; B32B17/10577; B32B17/10009; B32B17/10036; B32B17/10165; B32B17/10174; C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/34; C03C17/3411; C03C17/3417; B32B2307/00; B32B2307/30; B32B2307/304; B32B2307/40; B32B2307/412; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/23; C03C2217/231
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
94 words
A heat wave shielding lamination comprising a visible light transparent substrate and an overlying lamination comprising two In 2 O 3 shield layers containing different amounts of Sn, the amount of Sn increasing with increasing proximity to the substrate, whereby the resulting heat wave shielding lamination has good transmittance for visible light and good shielding effect against rays in the infrared spectrum by virtue of the fact that the shield layers containing different amounts of Sn manifest maximum infrared absorption at different wavelengths to give high infrared ray absorptioon over a wide wavelength range.
Claim 2
Dependent Claim
94 words
A heat wave shielding lamination comprising a visible light transparent substrate and an overlying lamination comprising two In 2 O 3 shield layers containing different amounts of Sn, the amount of Sn increasing with increasing proximity to the substrate, whereby the resulting heat wave shielding lamination has good transmittance for visible light and good shielding effect against rays in the infrared spectrum by virtue of the fact that the shield layers containing different amounts of Sn manifest maximum infrared absorption at different wavelengths to give high infrared ray absorptioon over a wide wavelength range.
Claim 3
Dependent Claim
30 words
A heat wave shielding lamination according to claim 1, wherein the In 2 O 3 shield layers contain different amounts of Sn within the range of 0-60 percent Sn atoms.
Claim 4
Dependent Claim
30 words
A heat wave shielding lamination according to claim 2, wherein the In 2 O 3 shield layers contain different amounts of Sn within the range of 0-20 percent Sn atoms.
Claim 5
Dependent Claim
38 words
A heat wave shielding lamination according to claim 1, wherein the substrate is glass and the overlying lamination comprises a layer of ITO containing about 20 percent Sn atoms and a layer of In 2 O 3 .
Claim 6
Dependent Claim
46 words
A heat wave shielding lamination according to claim 1, wherein the shield layer which is nearest to said substrate is formed of a plurality of In 2 O 3 films containing different amounts of Sn, the amount of Sn increasing with increasing proximity to said substrate.
Claim 7
Dependent Claim
28 words
A heat wave shielding lamination according to claim 5, wherein the substrate is glass and wherein there is further provided a topmost In 2 O 3 shield layer.
Claim 8
Dependent Claim
39 words
A heat wave shielding lamination according to claim 1, wherein the shield layer which is nearest to said substrate is a single layer of In 2 O 3 containing increasing amounts of Sn with increasing proximity to said substrate.
Claim 9
Dependent Claim
26 words
A heat wave shielding lamination according to claim 1 further comprising an anti-reflection layer on the surface of the lamination, thereby enhancing transparency to visible light.
Claim 10
Dependent Claim
18 words
A heat wave shielding lamination according to claim 8, wherein the anti-reflection layer consists of SiO 2 .
Claim 11
Dependent Claim
29 words
A heat wave shielding lamination according to claim 1 further comprising an undercoating between said visible light transparent substrate and said overlying lamination, thereby enhancing transparency to visible light.
Claim 12
Dependent Claim
17 words
A heat wave shielding lamination according to claim 10, wherein the undercoating consists of SiO 2 .
Claim 13
Dependent Claim
24 words
A heat wave shielding lamination according to claim 1, wherein said lamination constitutes a planar heating element when electrical heating current is applied thereto.
Claim 14
Dependent Claim
16 words
A heat wave shielding lamination according to claim 1, wherein the substrate is a vehicle window.
Claim 15
Dependent Claim
20 words
A heat wave shielding lamination according to claim 13, wherein the overlying lamination itself has an overlying plate of glass.
Claim 16
Dependent Claim
40 words
A heat wave shielding lamination according to claim 13, wherein the lamination is provided with electrodes which are connected to a source of heating current, whereby the lamination serves as a demister or defroster when heating current is passed therethrough.
Claim 17
Dependent Claim
48 words
A heat wave shielding lamination according to claim 15, wherein separate laminations are provided at a center portion and both side portions of the vehicle window and heating current is passed through the lamination at the center portion through electrodes provided at a top and bottom portion thereof.
Claim 18
Dependent Claim
55 words
A heat wave shielding lamination according to claim 15, wherein a plurality of overlying laminations having different structures are provided on the surface of said vehicle window and each lamination is provided with electrodes for supplying heating current thereto, whereby the laminations can be selectively heated by passing heating current through selected pairs of electrodes.
Claim 19
Dependent Claim
46 words
A heat wave shielding lamination according to claim 14, wherein a portion of the overlying lamination covering between about 1/10 and 1/4 of an upper part of the vehicle window is formed of a plurality of ITO layers having an Sn content of up to 60%.
References Cited (Backward Citations)
US4187336A
Cited
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 |