US5071206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color-corrected heat-reflecting composite films and glazing products containing the same
Assignee: Southwall Technologies Inc
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Filing: 1988-05-25
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Granted: 1991-12-10
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Expires: 2008-05-25
Abstract
Abstract Visually transparent, color corrected, infra-red reflecting films are disclosed for solar heat control. The films employ Fabry-Perot sandwich interference filters which are characterized by having three or more transparent layers of sputter-deposited metal such as silver directly contiguous with dielectric spacer layers and optionally boundary layers. Methods for producing these materials by sputtering techniques as well as glazing materials incorporating these films are disclosed, as well.
Inventors
- 👤 Thomas G. Hood
- 👤 Stephen F. Meyer
- 👤 Michael Brazil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:58
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10761; B32B17/10165; B32B17/10174; B32B17/1033; B32B2367/00; G; G02; G02B; G02B5/00; G02B5/20; G02B5/28; G02B5/281; G02B5/282
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
177 words
A glazing material comprising a visible light transparent structural sheet member having two sides and a surrounding edge, said sheet member having adhered to one of its sides a color-corrected infrared-reflecting Fabry-Perot interference filter composite, said composite itself comprising a seven layer structure made up of the following sequential layers; a discrete continuous visible light transparent dielectric boundary layer; a discrete continuous visible light transparent metal layer; a discrete continuous visible light transparent dielectric spacer layer; a discrete continuous visible light transparent metal layer; a discrete continuous visible light transparent dielectric spacer layer; a discrete continuous visible light transparent metal layer; and a discrete continuous visible light transparent dielectric outer layer; wherein the metal layers each comprise silver and each are from 4 to 17 nm in thickness and the dielectric layers each have an index of refraction of from about 1.75 to about 2.25 with the spacer layers having a thickness of from 70 to 100 nm and the boundary and outer layers each having a thickness of from about 30 nm to about 70 nm.
Claim 2
Dependent Claim
177 words
A glazing material comprising a visible light transparent structural sheet member having two sides and a surrounding edge, said sheet member having adhered to one of its sides a color-corrected infrared-reflecting Fabry-Perot interference filter composite, said composite itself comprising a seven layer structure made up of the following sequential layers; a discrete continuous visible light transparent dielectric boundary layer; a discrete continuous visible light transparent metal layer; a discrete continuous visible light transparent dielectric spacer layer; a discrete continuous visible light transparent metal layer; a discrete continuous visible light transparent dielectric spacer layer; a discrete continuous visible light transparent metal layer; and a discrete continuous visible light transparent dielectric outer layer; wherein the metal layers each comprise silver and each are from 4 to 17 nm in thickness and the dielectric layers each have an index of refraction of from about 1.75 to about 2.25 with the spacer layers having a thickness of from 70 to 100 nm and the boundary and outer layers each having a thickness of from about 30 nm to about 70 nm.
Claim 3
Dependent Claim
20 words
The glazing material of claim 1 wherein there are three metal layers each from 5 to 10 nm in thickness.
Claim 4
Dependent Claim
23 words
The glazing material of claim 2 additionally comprising a hardcoat layer or laminated glass layer located over the outer layer of the composite.
Claim 5
Dependent Claim
25 words
The glazing material of claim 1 wherein the sheet member is glass and wherein the composite is directly adhered to the surface of the glass.
Claim 6
Dependent Claim
41 words
The glazing material of claim 1 wherein the sheet member is plastic sheet, wherein the composite is directly adhered to the surface of that plastic sheet and wherein the glazing material is adhered to a visible light transparent substrate comprising glass.
Claim 7
Dependent Claim
27 words
The glazing material of claim 5 wherein the plastic sheet is adhered to the visible light transparent substrate on the side not having the composite adhered thereto.
Claim 8
Dependent Claim
21 words
The glazing material of claim 5 adhered to the visible light transparent substrate on the side having the composite adhered thereto.
Claim 9
Dependent Claim
44 words
A window glazing product comprising the glazing material of claim 1 wherein the sheet member is plastic sheet, wherein the composite is adhered to the surface of the plastic and wherein the glazing material is laminated between two parallel sheets of plastic or glass.
Claim 10
Dependent Claim
15 words
The window glazing product of claim 8 wherein the parallel sheets are low iron glass.
Claim 11
Dependent Claim
15 words
The glazing material of claim 1 wherein the metal and dielectric layers are each sputter-deposited.
Claim 12
Dependent Claim
12 words
The glazing material of claim 1 wherein the sheet member comprises plastic.
Claim 13
Dependent Claim
12 words
The glazing material of claim 1 wherein the sheet member comprises glass.
References Cited (Backward Citations)
US3272986A
Cited
US3682528A
Cited
US3900673A
Cited
US3990784A
Cited
US4337990A
Cited
US4179181A
Cited
US4204942A
Cited
EP0031278A1
Cited
US4335166A
Cited
EP0080182A1
Cited
US4590118A
Cited
US4859532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-09 | 1995-06-10 | 1995-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-09 | 1999-06-10 | 1999-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-09 | 2003-06-10 | 2003-12-10 | $7700.00 | Window Closed / Lapsed |