Patent US4780752A successfully refreshed from Google Patents.
US4780752A
Expired / Lapsed
US
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Luminescent semiconductor component
Assignee: Telefunken Electronic GmbH
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Filing: 1982-04-28
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Granted: 1988-10-25
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Expires: 2002-04-28
Abstract
Abstract A luminescent semiconductor component has a casing member of a light transmissive plastics material containing particles which simultaneously determine the light scattering and filtering properties of the light which is emitted by the semiconductor component and passes out of the casing member. The casing member may be of epoxy resin, and the particles may be of colored ground filter glass.
Inventors
- 👤 Jorg Angerstein
- 👤 Werner Schairer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:14
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/852; H10H20/854; H10H20/882; H10W; H10W72/00; H10W72/50; H10W72/531; H10W72/536; H10W72/5363; H10W90/00; H10W90/701; H10W90/751; H10W90/756
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A luminescent semiconductor component comprising a light emitting semiconductor body and a casing member of light-transmissive plastics material enclosing said body, said casing member containing up to 20% by volume of particles which are comprised of a colored glass powder and which simultaneously determine the light scattering and filtering properties of said casing member with respect to light emitted by said body and passing through said casing member, and wherein the refractive index of said plastics material is substantially different from that of the material of said particles.
Claim 2
Dependent Claim
88 words
A luminescent semiconductor component comprising a light emitting semiconductor body and a casing member of light-transmissive plastics material enclosing said body, said casing member containing up to 20% by volume of particles which are comprised of a colored glass powder and which simultaneously determine the light scattering and filtering properties of said casing member with respect to light emitted by said body and passing through said casing member, and wherein the refractive index of said plastics material is substantially different from that of the material of said particles.
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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) | 1991-10-25 | 1992-04-25 | 1992-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-25 | 1996-04-25 | 1996-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-25 | 2000-04-25 | 2000-10-25 | $7700.00 | Window Closed / Lapsed |