US4611398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated circuit package
Assignee: Osram Sylvania Inc
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Filing: 1984-10-09
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Granted: 1986-09-16
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Expires: 2004-10-09
Abstract
Abstract An integrated circuit package cover includes a groove with a quadrangular cross-section which contains a self-supporting sealant material of similar cross-section. During assembly, the sealant material is penetrated by the lead-ins and flows around them to achieve an environmental seal for the packaged chip.
Inventors
- 👤 Robert J. Eames
- 👤 Richard E. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:01
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/60; H10W72/00; H10W72/071; H10W76/10; H10W76/12; H10W76/17; H10W76/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49146
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
69 words
A cover for an integrated circuit package, said cover comprising: and electrically insulating body having an outer surface and an inner surface; said inner surface having a substantially centrally located quadrangular depression therein; and an annular groove formed in said inner surface and circumscribing said depression, said annular groove having a minimum diameter greater than the largest diagonal measurement of said depression; and said groove being quadrangular in cross-section.
Claim 2
Dependent Claim
69 words
A cover for an integrated circuit package, said cover comprising: and electrically insulating body having an outer surface and an inner surface; said inner surface having a substantially centrally located quadrangular depression therein; and an annular groove formed in said inner surface and circumscribing said depression, said annular groove having a minimum diameter greater than the largest diagonal measurement of said depression; and said groove being quadrangular in cross-section.
Claim 3
Dependent Claim
26 words
The cover of claim 1 wherein said annular groove contains a self-supporting, lead-in deformable sealant washer having a cross-section matching the cross-section of said annular groove.
Claim 4
Independent Claim
89 words
A method of fabricating and integrated circuit package comprising the steps of: attaching a plurality of electrically conductive lead-ins to an electrically insulating base; fixing and integrated circuit chip to said base; making electrical connections between said chip and said lead-ins; providing a insulating cover having and inner surface facing said insulating base; fixing a self-supporting, lead-in deformable sealant washer into an annular groove formed in the inner surface of the electrically insulating cover; and mounting said cover upon said base whereby said plurality of lead-ins penetrate said washer.
Claim 5
Independent Claim
89 words
A method of fabricating and integrated circuit package comprising the steps of: attaching a plurality of electrically conductive lead-ins to an electrically insulating base; fixing and integrated circuit chip to said base; making electrical connections between said chip and said lead-ins; providing a insulating cover having and inner surface facing said insulating base; fixing a self-supporting, lead-in deformable sealant washer into an annular groove formed in the inner surface of the electrically insulating cover; and mounting said cover upon said base whereby said plurality of lead-ins penetrate said washer.
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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) | 1989-09-15 | 1990-03-17 | 1990-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-15 | 1994-03-17 | 1994-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-15 | 1998-03-17 | 1998-09-16 | $7700.00 | Window Closed / Lapsed |