US3644730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective reflectors
Assignee: Pilkington North America Inc
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Filing: 1967-08-29
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Granted: 1972-02-22
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Expires: 1987-08-29
Abstract
Abstract A selective reflector, for a source of visible and invisible rays of light, made up of a shaped backing member and a flexible member that carries a light modifying optical coating and is held in conformity to the shaped backing member; and in which the carrying member and optical coating are both capable of transmitting selected rays of light.
Inventors
- 👤 James C Ogle Jr
- 👤 Dwight W Barkley
- 👤 Arthur I Bodkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:55
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/22; F21V7/24; F21V7/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A light fixture including a frame, a rigid backing member carried by said frame and having its front surface shaped to a predetermined contour, a sheet of flexible polyimide resin conformed to and attached to said shaped surface by an adhesive, a thermally evaporated cold mirror coating on the free surface of said polyimide resin sheet, and a source of visible and infrared radiant energies mounted forwardly of said coated resin sheet, said backing member being composed of a material which absorbs infrared energy and said adhesive being of a composition which transmits infrared radiant energy.
Claim 2
Dependent Claim
96 words
A light fixture including a frame, a rigid backing member carried by said frame and having its front surface shaped to a predetermined contour, a sheet of flexible polyimide resin conformed to and attached to said shaped surface by an adhesive, a thermally evaporated cold mirror coating on the free surface of said polyimide resin sheet, and a source of visible and infrared radiant energies mounted forwardly of said coated resin sheet, said backing member being composed of a material which absorbs infrared energy and said adhesive being of a composition which transmits infrared radiant energy.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |