Patent US5289082A successfully refreshed from Google Patents.
US5289082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
LED lamp
Assignee: Toshiba Corp
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Filing: 1991-09-06
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Granted: 1994-02-22
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Expires: 2011-09-06
Abstract
Abstract A LED lamp having a lead, a plurality of semiconductor chips placed on a tip portion of the lead, a translucent envelope surrounding the semiconductor chips, characterized in that the envelope is formed of a solid body containing parts of a plurality of ellipsoids or spheres whose axes extend through the semiconductor chips, respectively.
Inventors
- 👤 Satoshi Komoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:12
CPC Classifications
H; H10; H10W; H10W90/00; G; G02; G02B; G02B3/00; G02B3/02; G02B3/04; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/852; H10H20/853; H10W72/00; H10W72/50; H10W72/531; H10W72/536; H10W72/5363; H10W90/701; H10W90/751; H10W90/756; Y; Y10; Y10S; Y10S362/00; Y10S362/80
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
An LED lamp including a lead having a tip portion on which first and second semiconductor chips are mounted, and an envelope surrounding the chips; wherein the envelope has upper and lower portions; the lower portion is cylindrical in shape and has an axis extending through the lead; and the upper portion is formed of part of a first ellipsoid which has an axis extending through the first semiconductor chip and being parallel with the lead, the first ellipsoid including points which are at different distances from a center of the first ellipsoid, and part of a second ellipsoid which has an axis extending through the second semiconductor chip and being parallel with the lead, the second ellipsoid including points which are at different distances from a center of the second ellipsoid.
Claim 2
Dependent Claim
132 words
An LED lamp including a lead having a tip portion on which first and second semiconductor chips are mounted, and an envelope surrounding the chips; wherein the envelope has upper and lower portions; the lower portion is cylindrical in shape and has an axis extending through the lead; and the upper portion is formed of part of a first ellipsoid which has an axis extending through the first semiconductor chip and being parallel with the lead, the first ellipsoid including points which are at different distances from a center of the first ellipsoid, and part of a second ellipsoid which has an axis extending through the second semiconductor chip and being parallel with the lead, the second ellipsoid including points which are at different distances from a center of the second ellipsoid.
Claim 3
Dependent Claim
23 words
The LED lamp according to claim 1, wherein the axes of the first ellipsoid and the second ellipsoid are parallel with each other.
Claim 4
Dependent Claim
85 words
An LED lamp including a lead having a tip portion of which a plurality of semiconductor chips are mounted, and an envelope surrounding the chips: wherein the envelope has upper and lower portions; the lower portion is cylindrical in shape and has an axis extending through the lead; and the upper portion is formed of portions of ellipsoids except spheroids, each ellipsoid has an axis extending through one of the semiconductor chips and each of said axes of said ellipsoids being parallel to the lead.
Claim 5
Dependent Claim
85 words
An LED lamp including a lead having a tip portion of which a plurality of semiconductor chips are mounted, and an envelope surrounding the chips: wherein the envelope has upper and lower portions; the lower portion is cylindrical in shape and has an axis extending through the lead; and the upper portion is formed of portions of ellipsoids except spheroids, each ellipsoid has an axis extending through one of the semiconductor chips and each of said axes of said ellipsoids being parallel to the lead.
Claim 6
Dependent Claim
105 words
A light emitting diode, comprising: an envelope having an upper and a lower portion; a plurality of light emitting means contained within said envelope; and supply means, extending through the lower portion of said envelope, for supplying energy to the plurality of light emitting means; said upper portion of said envelope comprising portions of ellipsoids corresponding to said plurality of light emitting means such that there is a portion of a different ellipsoid corresponding to each of said light emitting means, each of said ellipsoids including points which are at a different distance from a center of one of said ellipsoids corresponding to the points.
Claim 7
Dependent Claim
105 words
A light emitting diode, comprising: an envelope having an upper and a lower portion; a plurality of light emitting means contained within said envelope; and supply means, extending through the lower portion of said envelope, for supplying energy to the plurality of light emitting means; said upper portion of said envelope comprising portions of ellipsoids corresponding to said plurality of light emitting means such that there is a portion of a different ellipsoid corresponding to each of said light emitting means, each of said ellipsoids including points which are at a different distance from a center of one of said ellipsoids corresponding to the points.
Claim 8
Dependent Claim
31 words
A light emitting diode according to claim 4, wherein each of said ellipsoids contains an axis extending through the corresponding light emitting means and said axes are parallel to each other.
References Cited (Backward Citations)
US4185891A
Cited
US5013144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-21 | 1997-08-23 | 1998-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-21 | 2001-08-23 | 2002-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-21 | 2005-08-23 | 2006-02-22 | $7700.00 | Window Closed / Lapsed |