US3591248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uniform light transmitting, infrared absorbing and reflecting materials and articles
Assignee: AGC Glass Europe SA
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Filing: 1969-10-07
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Granted: 1971-07-06
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Expires: 1989-10-07
Abstract
Abstract A light-transmitting article composed of a layer of transparent material having radiant heat-absorbing properties and arranged to be exposed to a principal source of heat radiation, and a protective layer of transparent material disposed adjacent that surface of the first-mentioned layer which is to face the principal source of heat radiation and capable of at least temporarily reflecting at least a portion of the radiant heat from such source which the first-mentioned layer is capable of absorbing so as to protect the article from damage due to excessive heat absorption.
Inventors
- 👤 Gerard Meunier
- 👤 Luclen Leger
- 👤 Jose Lelong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:59
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/02; B32B7/027; B32B15/00; B32B15/04; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/10174; B44; B44F; B44F1/00; B44F1/06; B44F1/066; C; C03; C03C; C03C1/00; C03C1/10; C03C17/00; C03C17/06; C03C17/22; C03C17/23; C03C17/34; C03C17/36; C03C17/3602; C03C17/3615; C03C17/3639; C03C17/3642; C03C17/3644; C03C17/3657; C03C17/366; C03C17/3681; C03C3/00; C03C3/04; C03C3/076; C03C3/083; C03C3/085; C03C3/087; C03C4/00; C03C4/02; E; E06; E06B; E06B3/00; E06B3/66; E06B3/67; E06B3/6715; E06B3/6722; E06B7/00; E06B7/28; F; F41; F41H; F41H3/00; G; G02; G02B; G02B5/00; G02B5/20; G02B5/208; B32B2307/00; B32B2307/40; B32B2307/412; B32B2307/50; B32B2307/56; B32B2307/70; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/212; C03C2217/25; C03C2217/251; C03C2217/254; C03C2217/255
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
152 words
A light-transmitting article for providing protection against infrared radiation emanating from a principal source, comprising, in combination: a. a first layer of transparent material for absorbing infrared radiation from such source and having a nonuniform visible light transmission characteristic at least when subjected to the influence of such radiation having a predetermined intensity level; and b. a second layer of transparent material for at least temporarily reflecting at least a portion of the infrared radiation from such source which said first layer is capable of absorbing, and at the same time having a nonuniform visible light transmission characteristic said second layer being disposed on that side of said first layer which is to face the principal source of infrared radiation; c. wherein the visible light transmission characteristics of said first and second layers are such that said layers together permanently have a substantially uniform light transmission characteristic over the visible light band.
Claim 2
Dependent Claim
152 words
A light-transmitting article for providing protection against infrared radiation emanating from a principal source, comprising, in combination: a. a first layer of transparent material for absorbing infrared radiation from such source and having a nonuniform visible light transmission characteristic at least when subjected to the influence of such radiation having a predetermined intensity level; and b. a second layer of transparent material for at least temporarily reflecting at least a portion of the infrared radiation from such source which said first layer is capable of absorbing, and at the same time having a nonuniform visible light transmission characteristic said second layer being disposed on that side of said first layer which is to face the principal source of infrared radiation; c. wherein the visible light transmission characteristics of said first and second layers are such that said layers together permanently have a substantially uniform light transmission characteristic over the visible light band.
Claim 3
Dependent Claim
26 words
An arrangement as defined in claim 1 wherein said first layer comprises a sheet of transparent material and a first transparent coating disposed on said sheet.
Claim 4
Dependent Claim
13 words
An arrangement as defined in claim 2 wherein said first coating is tinted.
Claim 5
Dependent Claim
24 words
An arrangement as defined in claim 3 wherein said first layer acquires a deeper tint as the radiation to which it is exposed increases.
Claim 6
Dependent Claim
29 words
An arrangement as defined in claim 2 wherein said first coating is substantially colorless when exposed to low intensity radiation and acquires a tint when exposed to high-intensity radiation.
Claim 7
Dependent Claim
23 words
An arrangement as defined in claim 2 wherein said second layer comprises a transparent sheet and a second coating disposed on said sheet.
Claim 8
Dependent Claim
22 words
An arrangement as defined in claim 1 wherein said first layer is tinted and absorbs thermal radiation under all ambient radiation conditions.
Claim 9
Dependent Claim
24 words
An arrangement as defined in claim 7 wherein said second layer is constituted by a coating disposed on one surface of said first layer.
Claim 10
Dependent Claim
18 words
An arrangement as defined in claim 7 wherein said second layer comprises a coating on a transparent sheet.
Claim 11
Dependent Claim
30 words
An arrangement as defined in claim 9 wherein said second layer is composed of a material selected from the group consisting of metals, metal containing compounds and metalloid containing compounds.
Claim 12
Dependent Claim
16 words
An arrangement as defined in claim 9 wherein said second layer is composed of an oxide.
Claim 13
Dependent Claim
25 words
An arrangement as defined in claim 9 wherein said second layer has an index of refraction which is different from that of the first layer.
Claim 14
Dependent Claim
21 words
An arrangement as defined in claim 12 wherein said second layer has a larger index of refraction than said first layer.
Claim 15
Dependent Claim
27 words
An arrangement as defined in claim 1 wherein said second layer is constituted by a film of titanium dioxide deposited on one surface of said first layer.
Claim 16
Dependent Claim
17 words
An arrangement as defined in claim 1 wherein said first layer is constituted by a glass sheet.
Claim 17
Dependent Claim
43 words
An arrangement as defined in claim 1 further comprising an additional sheet of transparent material, and wherein said first layer is constituted by a sheet of transparent material and said second layer is constituted by a coating disposed on one of said sheets.
Claim 18
Dependent Claim
21 words
An arrangement as defined in claim 16 wherein said second layer is disposed between said first layer and said additional sheet.
Claim 19
Dependent Claim
20 words
An arrangement as defined in claim 16 wherein said first layer is tinted and said additional sheet is substantially colorless.
Claim 20
Dependent Claim
17 words
An arrangement as defined in claim 18 wherein said second layer is deposited on said additional sheet.
Claim 21
Dependent Claim
18 words
An arrangement as defined in claim 16 wherein both said additional sheet and said first layer are tinted.
Claim 22
Dependent Claim
23 words
An arrangement as defined in claim 20 wherein said additional sheet has a tinting which is different from that of said first layer.
Claim 23
Dependent Claim
21 words
An arrangement as defined in claim 16 wherein said additional sheet is spaced from, and disposed parallel to, said first layer.
Claim 24
Dependent Claim
140 words
A light-transmitting article for providing protection against infrared radiation emanating from a principal source and permanently having a substantially uniform transmission characteristic over the visible light band, comprising, in combination: a. a first layer constituted by a tiNted sheet of transparent material for absorbing infrared radiation from such source at least when subjected to the influence of such radiation having a predetermined intensity level; and b. a second layer constituted by a tinted coating of transparent material for at least temporarily reflecting at least a portion of the infrared radiation from such source which said first layer is capable of absorbing, said second layer being disposed on that side of said first layer which is to face the principal source of infrared radiation; c. wherein the tint of said first layer is substantially complementary to that of said second layer.
Claim 25
Dependent Claim
140 words
A light-transmitting article for providing protection against infrared radiation emanating from a principal source and permanently having a substantially uniform transmission characteristic over the visible light band, comprising, in combination: a. a first layer constituted by a tiNted sheet of transparent material for absorbing infrared radiation from such source at least when subjected to the influence of such radiation having a predetermined intensity level; and b. a second layer constituted by a tinted coating of transparent material for at least temporarily reflecting at least a portion of the infrared radiation from such source which said first layer is capable of absorbing, said second layer being disposed on that side of said first layer which is to face the principal source of infrared radiation; c. wherein the tint of said first layer is substantially complementary to that of said second layer.
Claim 26
Dependent Claim
37 words
An arrangement as defined in claim 23 wherein said first layer is constituted by a sheet of soda-lime glass containing a tinting agent constituted by at least one of the substances Fe2O3, CoO, NiO, MnO and Se.
Claim 27
Dependent Claim
56 words
An arrangement as defined in claim 24 wherein any of said tinting agent substances contained in said soda-lime glass sheet are present in the following concentration: Fe2O3 from 0.01 to 0.15 percent CoO from 0.0001 to 0.01 percent NiO from 0.02 to 0.05 percent MnO from 0.01 to 0.5 percent Se from 0.005 to 0.03 percent
Claim 28
Dependent Claim
134 words
A light-transmitting article for providing protection against infrared radiation emanating from a principal source and permanently having a substantially uniform transmission characteristic over the visible light band, said article consisting of: a. a first layer of transparent material for absorbing infrared radiation from such source and having a nonuniform visible light transmission characteristic at least when subjected to the influence of such radiation having a predetermined intensity level; and b. a second layer of transparent material for at least temporarily reflecting at least a portion of the infrared radiation from such source which said first layer is capable of absorbing and at the same time having a nonuniform visible light transmission characteristic said second layer being disposed on that side of said first layer which is to face the principal source of infrared radiation.
Claim 29
Dependent Claim
134 words
A light-transmitting article for providing protection against infrared radiation emanating from a principal source and permanently having a substantially uniform transmission characteristic over the visible light band, said article consisting of: a. a first layer of transparent material for absorbing infrared radiation from such source and having a nonuniform visible light transmission characteristic at least when subjected to the influence of such radiation having a predetermined intensity level; and b. a second layer of transparent material for at least temporarily reflecting at least a portion of the infrared radiation from such source which said first layer is capable of absorbing and at the same time having a nonuniform visible light transmission characteristic said second layer being disposed on that side of said first layer which is to face the principal source of infrared radiation.
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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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |