US4211955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state lamp
Assignee: Individual
•
Filing: 1978-03-02
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Granted: 1980-07-08
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Expires: 1998-03-02
Abstract
Abstract An integrated circuit chip containing one or more light-emitting diodes is mounted within a light-diffusing encasement having a standard incandescent light bulb lamp base. The integrated circuit chip also contains a rectifier and voltage regulator circuit. The resulting solid state lamp may then be used to replace any standard incandescent light bulb, as it can be inserted in any existing standard A.C. or D.C. lamp sockets. The encasement may be a standard hollow light bulb, or, for maximum light diffusion, a solid transparent or translucent plastic in which the chip is embedded.
Inventors
- 👤 Stephen W. Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:49
CPC Classifications
F; F21; F21V; F21V3/00; F21K; F21K9/00; F21K9/20; F21K9/23; F21K9/232; F21V23/00; F21V23/02; H; H05; H05B; H05B45/00; H05B45/30; H05B45/357; H05B45/395; F21Y; F21Y2115/00; F21Y2115/10; Y; Y02; Y02B; Y02B20/00; Y02B20/30; Y10; Y10S; Y10S362/00; Y10S362/80
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
120 words
An area-illuminating solid state lamp comprising: a light-diffusing encasement having a standard incandescent lamp base generally in the form of a cylinder; a pair of electrical conductors whose lower ends are electrically secured to said base and whose upper ends extend into said encasement and mechanically support a discrete light-emitting solid state device; said solid state device comprises an integrated circuit chip having a diode rectifier circuit, a plurality of series-interconnected light emitting diodes electrically coupled to said rectifier circuit by a voltage regulator circuit electrically connected between said rectifier and said plurality of light-emitting diodes; said integrated circuit chip being electrically connected to and mechanically supported on said conductors within said encasement; and said encasement being solid translucent plastic.
Claim 2
Dependent Claim
120 words
An area-illuminating solid state lamp comprising: a light-diffusing encasement having a standard incandescent lamp base generally in the form of a cylinder; a pair of electrical conductors whose lower ends are electrically secured to said base and whose upper ends extend into said encasement and mechanically support a discrete light-emitting solid state device; said solid state device comprises an integrated circuit chip having a diode rectifier circuit, a plurality of series-interconnected light emitting diodes electrically coupled to said rectifier circuit by a voltage regulator circuit electrically connected between said rectifier and said plurality of light-emitting diodes; said integrated circuit chip being electrically connected to and mechanically supported on said conductors within said encasement; and said encasement being solid translucent plastic.
Claim 3
Dependent Claim
25 words
An area-illuminating solid state lamp as defined in claim 1 wherein said plurality of light-emitting diodes are arranged in a circular array on said chip.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-08 | 1984-01-07 | 1984-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-08 | 1988-01-07 | 1988-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-08 | 1992-01-07 | 1992-07-08 | $7700.00 | Window Closed / Lapsed |