Patent US4015071A successfully refreshed from Google Patents.
US4015071A
Expired / Lapsed
US
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Microelectronic circuit case
Assignee: Bliss and Laughlin Industries Inc
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Filing: 1975-06-05
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Granted: 1977-03-29
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Expires: 1995-06-05
Abstract
Abstract A microelectronic circuit case for continuous seam welding to a lid and having a chamfer on the inner corner of the case upper edge for improving welding and sealing reliability, and a method of making the case.
Inventors
- 👤 Robert L. Peet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:01
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/132; H05; H05K; H05K5/00; H05K5/02; H05K5/03; H10W95/00; Y; Y10; Y10S; Y10S220/00; Y10S220/29
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
63 words
A microelectronic circuit case comprising a unitary metal container with an open top and upstanding sides having a smooth flat upper edge with a substantially square outer corner for continuous seam welding at the outer corner to a lid placed over the open top to form a hermetically sealed package, the improvement comprising a chamfer at the inner corner of said upper edge.
Claim 2
Dependent Claim
63 words
A microelectronic circuit case comprising a unitary metal container with an open top and upstanding sides having a smooth flat upper edge with a substantially square outer corner for continuous seam welding at the outer corner to a lid placed over the open top to form a hermetically sealed package, the improvement comprising a chamfer at the inner corner of said upper edge.
Claim 3
Dependent Claim
30 words
A case as defined in claim 1 wherein the width of said upper edge for engagement with the lid is in the order of one-quarter the thickness of said sides.
References Cited (Backward Citations)
US1857505A
Cited
US2285609A
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US2880383A
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US2968713A
Cited
US3195026A
Cited
US3190952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |