US3661686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent laminated structure of reduced specular reflectance
Assignee: Sierracin Corp
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Filing: 1967-04-27
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Granted: 1972-05-09
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Expires: 1987-04-27
Abstract
Abstract A laminated structure, transparent or adapted to be made transparent, having an intermediate layer of reflective material following the contours of the roughened surface of a first layer, thus reducing the specular reflectance and mirror-like imaging properties of the intermediate layer, and a thermoplastic layer disposed next to the intermediate layer with the surface of said layer adjacent the intermediate layer following the contours thereof.
Inventors
- 👤 Ramsey C Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:55
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10559; B32B17/10568; B32B15/00; B32B15/04; B32B15/08; B32B17/10009; B32B17/10018; B32B17/10036; B32B17/10165; B32B17/10174; B32B17/10807; B32B17/10889; B32B17/10981; B32B2367/00; B32B27/00; B32B27/36; E; E06; E06B; E06B3/00; E06B3/66; E06B3/67; E06B3/6715; E06B7/00; E06B7/28; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/24545; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
23 words
The laminated structure of claim 1 wherein said fourth layer is optically transparent when its surface remote from said first layer is smooth.
Claim 2
Dependent Claim
20 words
The laminated structure of claim 2 wherein the surface of said second layer remote from said intermediate layer is textured.
Claim 3
Dependent Claim
17 words
A laminated structure according to claim 1 which is optically transparent when its exterior surfaces are smooth.
Claim 4
Dependent Claim
13 words
A laminated structure according to claim 4 wherein said intermediate layer is metallic.
Claim 5
Dependent Claim
14 words
A laminated structure according to claim 5 wherein said intermediate layer is electrically conductive.
Claim 6
Dependent Claim
14 words
A laminated structure according to claim 5 wherein said intermediate layer is infrared reflecting.
Claim 7
Dependent Claim
35 words
A laminated structure according to claim 4 wherein the magnitude of the refractive index of said intermediate layer is at least 25 percent greater than the refractive index of either said first or second layer.
Claim 8
Dependent Claim
139 words
A laminated structure comprising a first layer, a second layer of a homogeneous thermoplastic material, an intermediate layer and a fourth layer of a homogeneous thermoplastic material, the surfaces of said intermediate layer exhibiting visible reflectance in excess of the visible reflectance of the surfaces of said first and second layers, said first layer having a roughened surface, at least the surface of said intermediate layer adjacent said first layer following the contours of said roughened surface of said first layer anD the other surface of said intermediate layer being rough whereby visible reflections from said intermediate layer are diffused, the surface of said second layer adjacent said intermediate layer following the contours of the rough surface thereof, said fourth layer being adjacent said first layer, at least one of the outermost surfaces of the laminated structure being textured.
Claim 9
Dependent Claim
203 words
A laminated structure transparent at visible wavelengths which comprises (1) a first, rigid homogeneous outer layer the outer surface of which is free of additional lamina; (2) a second, homogeneous thermoplastic layer adjacent the inner surface of said first layer; (3) a third, flexible plastic layer one surface of which is a roughened surface; (4) a fourth layer intermediate the layers (2) and (3), the surfaces of which intermediate layer exhibit visible reflectance in excess of the visible reflectance of said second and third layers, at least the surface of said intermediate layer adjacent said third layer following the contours of said roughened surface of said third layer and the other surface of said intermediate layer being rough whereby visible reflections from said intermediate layer are diffused, the surface of said second layer adjacent said intermediate layer following the contours of the rough surface thereof; (5) a fifth homogeneous thermoplastic layer adjacent to and between (a) the surface of said third layer opposite the roughened surface thereof and (b) the inner surface of (6) a sixth, rigid homogeneous outer layer the outer surface of which is free of additional lamina; each of the layers 1, 2, 3, 5 and 6 being electrically non-conductive.
Claim 10
Dependent Claim
14 words
A laminated structure according to claim 10 wherein said intermediate layer 4 is metallic.
Claim 11
Dependent Claim
15 words
A laminated structure according to claim 11 wherein said intermediate layer 4 is electrically conductive.
Claim 12
Dependent Claim
15 words
A laminated structure according to claim 11 wherein said intermediate layer 4 is infrared reflecting.
Claim 13
Dependent Claim
36 words
A laminated structure according to claim 10 wherein the magnitude of the refractive index of said intermediate layer 4 is at least 25 percent greater than the refractive index of either of layers 2 and 3.
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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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |