Patent US4425575A successfully refreshed from Google Patents.
US4425575A
Expired / Lapsed
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Base for encapsulating components with coplanar electrodes
Assignee: Thales SA
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Filing: 1981-10-26
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Granted: 1984-01-10
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Expires: 2001-10-26
Abstract
Abstract A base comprising a metal mounting stud to which is fixed a locally metallized insulating plate of the beryllium oxide type. In order to very accurately position active or passive component or components on the insulating plate, at least one connecting electrode comprises at least one abutment zone against which is placed at least one component. This makes it possible to obtain a very good reproducibility of the electrical performances of the device. Such a mounting is applied to ultra-high frequency devices, particularly those incorporating a pre-matching circuit.
Inventors
- 👤 Jean Doyen
- 👤 Philippe Morel
- 👤 Jean C. Resneau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:01
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/134; H10W70/00; H10W70/099; H10W70/40; H10W70/481; H10W90/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
56 words
A base for encapsulating components with coplanar electrodes, comprising a metal mounting stud, an insulating plate and connecting electrodes hard soldered to metallizations deposited on the insulating plate, wherein at least one of the connecting electrodes comprises an abutment zone against which is placed at least one component welded to a metallization of the insulating plate.
Claim 2
Dependent Claim
56 words
A base for encapsulating components with coplanar electrodes, comprising a metal mounting stud, an insulating plate and connecting electrodes hard soldered to metallizations deposited on the insulating plate, wherein at least one of the connecting electrodes comprises an abutment zone against which is placed at least one component welded to a metallization of the insulating plate.
Claim 3
Dependent Claim
24 words
A base according to claim 1, wherein the abutment zone comprises at least one positioning bracket in which is placed at least one component.
Claim 4
Dependent Claim
43 words
A base according to claim 1, wherein the connecting electrode and the abutment zones are produced simultaneously from a single metal sheet forming a precise and non-deformable connection grid, whose outer contour is cut or stamped out after hard soldering to the base.
Claim 5
Dependent Claim
13 words
A base according to claim 3, wherein said grid is made by stamping.
Claim 6
Dependent Claim
14 words
A base according to claim 3, wherein said grid is made by chemical etching.
Claim 7
Dependent Claim
13 words
A base according to claim 3, wherein said grid is made by electro-forming.
Claim 8
Dependent Claim
17 words
A base according to claim 1, wherein said abutment zone constitutes a bridge between two external connections.
References Cited (Backward Citations)
US3996603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |