US3609475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-emitting diode package with dual-colored plastic encapsulation
Assignee: HP Inc
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Filing: 1970-05-04
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Granted: 1971-09-28
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Expires: 1990-05-04
Abstract
Abstract A light-emitting diode (LED) is bonded to a pair of metal leads which are attached to a metal lead frame with a plurality of lead pairs, such that its optical axis is parallel to the longitudinal axis of the leads. The device so formed is encapsulated in two colors of plastic, a clear portion over the diode to transmit light from the diode and a dark portion behind the diode to improve the diode on-off contrast and make a hermetic seal with the leads. After encapsulation individual devices are separated from each other by cutting the leads from the lead frame.
Inventors
- 👤 George N Kaposhilin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:15
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/857; H10H20/852; H10W; H10W72/00; H10W72/01; H10W72/0198; H10W90/00; H10W90/701; H10W90/751; H10W90/756
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
44 words
A package for a light-emitting diode as in claim 1 wherein: the first and second leads each have tab means protruding from them for anchoring the leads in the molded plastic body to prevent movement of the lead with respect to the plastic body.
Claim 2
Dependent Claim
69 words
A package for a light-emitting diode as in claim 2 wherein: the two leads are essentially parallel and are part of a metallic frame, the frame comprising a metal mounting portion means integral with a plurality of spaced-apart groups of leads, the mounting portion means having a series of regularly spaced index holes, the leads being separated from the mounting portion means after the molded plastic body is applied.
Claim 3
Dependent Claim
52 words
A package for a light-emitting diode as in claim 3 wherein: the molded plastic body is essentially circular in the cross section perpendicular to the light-emitting diode optical axis and has an annular protrusion at the lower portion of the body to retain a ferrule for mounting the package in a panel.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |