Patent US5663872A successfully refreshed from Google Patents.
US5663872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encapsulation of electronic components
Assignee: Bell Semiconductor LLC
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Filing: 1995-06-07
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Granted: 1997-09-02
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Expires: 2015-06-07
Abstract
Abstract For physical protection and to reduce stress, an electronic device (10) is mounted within a cavity in a housing (14) which constitutes an encapsulating member. The housing is preferably formed as two premoulded piece parts (14a, 14b). A leadframe (12) extends into the housing (14) in the manner of a sandwich construction. The device (10) may be mounted on a heat sink (16).
Inventors
- 👤 Trevor Clifford Gainey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:09
CPC Classifications
H; H10; H10W; H10W42/00; H10W42/121; H10W42/20; H10W74/00; H10W74/10; H10W74/111; H10W74/124; H10W72/00; H10W72/071; H10W72/075; H10W72/90; H10W72/951; H10W72/952; H10W90/00; H10W90/701; H10W90/751; H10W90/756
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
113 words
A packaged electronic device comprising: an upper housing element and a lower housing element composed of a uniform material, together the upper and lower housing elements forming a housing having a cavity; a leadframe structure having leads extending from an exterior of the housing to within the housing; wires connected to the leadframe at one end; and an electronic device mounted within the cavity in the housing, the electronic device connected to the wires at another end within the cavity and supported solely by the wires connected to the leadframe; wherein an internal surface of the housing is coated with a material which provides electromagnetic and radio frequency isolation of the electronic device.
Claim 2
Dependent Claim
113 words
A packaged electronic device comprising: an upper housing element and a lower housing element composed of a uniform material, together the upper and lower housing elements forming a housing having a cavity; a leadframe structure having leads extending from an exterior of the housing to within the housing; wires connected to the leadframe at one end; and an electronic device mounted within the cavity in the housing, the electronic device connected to the wires at another end within the cavity and supported solely by the wires connected to the leadframe; wherein an internal surface of the housing is coated with a material which provides electromagnetic and radio frequency isolation of the electronic device.
Claim 3
Dependent Claim
94 words
A packaged electronic device comprising: an upper housing element and a lower housing element both formed of a material incorporating a conductive matrix, together the upper and lower housing elements forming a housing having a cavity; a leadframe structure having leads extending from an exterior of the housing to within the housing; wires connected to the leadframe at one end; and an electronic device mounted within the cavity in the housing, the electronic device connected to the wires at another end within the cavity and supported solely by the wires connected to the leadframe.
Claim 4
Dependent Claim
94 words
A packaged electronic device comprising: an upper housing element and a lower housing element both formed of a material incorporating a conductive matrix, together the upper and lower housing elements forming a housing having a cavity; a leadframe structure having leads extending from an exterior of the housing to within the housing; wires connected to the leadframe at one end; and an electronic device mounted within the cavity in the housing, the electronic device connected to the wires at another end within the cavity and supported solely by the wires connected to the leadframe.
References Cited (Backward Citations)
GB2057757A
Cited
US4545926A
Cited
US4474685A
Cited
US4829403A
Cited
US4855868A
Cited
JPS6439100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-01 | 2001-03-03 | 2001-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-01 | 2005-03-03 | 2005-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-01 | 2009-03-03 | 2009-09-02 | $7700.00 | Window Closed / Lapsed |