US5438167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrimagnetic vias within multi-layer 3-dimensional structures/substrates
Assignee: Raytheon Co
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Filing: 1993-10-19
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Granted: 1995-08-01
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Expires: 2013-10-19
Abstract
Abstract Ferrimagnetic structures formed of ferrimagnetic vias in a unitized multilayer microcircuit structure that is formed of a plurality of co-fired insulating layers.
Inventors
- 👤 Robert F. McClanahan
- 👤 Robert D. Washburn
- 👤 Hal D. Smith
- 👤 Andrew Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:00
CPC Classifications
H; H10; H10W; H10W44/00; H10W44/501; H05; H05K; H05K1/00; H05K1/16; H05K1/165; H10W70/00; H10W70/60; H10W70/611; H10W70/62; H10W70/63; H10W70/635; H10W70/66; H05K2201/00; H05K2201/01; H05K2201/0183; H05K2201/0187; H05K2201/08; H05K2201/083; H05K2201/086; H05K2201/09; H05K2201/09209; H05K2201/095; H05K2201/096; H05K3/00; H05K3/46; H05K3/4611; H10W44/20; H10W44/203; H10W44/209; H10W44/212; H10W44/216
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
50 words
A multilayer circuit structure comprising: a plurality of planar ceramic co-fired insulating layers; and a plurality of ferrimagnetic vias formed in said ceramic co-fired insulating layers and defining a region that contains ferrimagnetic material, said insulating layers and said ferrimagnetic vias being integraly fused into a unitized multilayer circuit structure.
Claim 2
Dependent Claim
50 words
A multilayer circuit structure comprising: a plurality of planar ceramic co-fired insulating layers; and a plurality of ferrimagnetic vias formed in said ceramic co-fired insulating layers and defining a region that contains ferrimagnetic material, said insulating layers and said ferrimagnetic vias being integraly fused into a unitized multilayer circuit structure.
Claim 3
Dependent Claim
32 words
The multilayer circuit structure of claim 1 wherein said plurality of ferrimagnetic vias includes a plurality of columns of ferrimagnetic vias as viewed perpendicularly to the planar extent of said insulating layers.
Claim 4
Dependent Claim
55 words
The multilayer circuit structure of claim 1 wherein said plurality of ferrimagnetic vias are arranged in a grid of as viewed perpendicularly to the planar extent of said insulating layers, wherein ferrimagnetic vias in each of said plurality insulating layers are connected to ferrimagnetic vias in an adjacent one of said plurality of insulating layers.
Claim 5
Dependent Claim
62 words
The multilayer circuit structure of claim 1 wherein said plurality of ferrimagnetic vias are formed in an overlap region between coupled striplines disposed between said insulating layers and separated from each other in a direction that is perpendicular to the planar extent of said insulating layers, wherein said overlap region comprises a region that is between overlapping portions of the coupled striplines.
Claim 6
Dependent Claim
40 words
The multilayer circuit structure of claim 1 wherein said plurality of ferrimagnetic vias comprises first interconnected ferrimagnetic vias for partially surrounding a portion of a microstrip inductance and second ferrimagnetic vias for partially circumscribing a portion of the microstrip inductance.
Claim 7
Dependent Claim
23 words
The multilayer circuit structure of claim 1 wherein said plurality of ferrimagnetic vias comprises interconnected ferrimagnetic vias circumscribing a portion of a conductor.
Claim 8
Dependent Claim
49 words
A multilayer circuit structure comprising: a plurality of planar dielectric insulating layers; and a plurality of ferrimagnetic line vias formed in said insulating layers and defining a region that contains ferrimagnetic material, said insulating layers and said ferrimagnetic line vias being integrally fused into a unitized multilayer circuit structure.
Claim 9
Dependent Claim
49 words
A multilayer circuit structure comprising: a plurality of planar dielectric insulating layers; and a plurality of ferrimagnetic line vias formed in said insulating layers and defining a region that contains ferrimagnetic material, said insulating layers and said ferrimagnetic line vias being integrally fused into a unitized multilayer circuit structure.
Claim 10
Dependent Claim
57 words
The multilayer circuit structure of claim 7 wherein said plurality of ferrimagnetic line vias are arranged in a grid of as viewed perpendicularly to the planar extent of said insulating layers, wherein ferrimagnetic vias in each of said plurality of insulating layers are connected to ferrimagnetic vias in an adjacent one of said plurality of insulating layers.
Claim 11
Dependent Claim
54 words
A multilayer circuit structure comprising: a plurality of planar dielectric insulating layers; and a plurality of ferrimagnetic circular vias and ferrimagnetic line vias formed in said insulating layers and defining a region that contains ferrimagnetic material, said insulating layers and said ferrimagnetic vias and line vias forming part of a unitized multilayer circuit structure.
Claim 12
Dependent Claim
54 words
A multilayer circuit structure comprising: a plurality of planar dielectric insulating layers; and a plurality of ferrimagnetic circular vias and ferrimagnetic line vias formed in said insulating layers and defining a region that contains ferrimagnetic material, said insulating layers and said ferrimagnetic vias and line vias forming part of a unitized multilayer circuit structure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-31 | 1999-01-30 | 1999-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-31 | 2003-01-30 | 2003-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-31 | 2007-01-30 | 2007-08-01 | $7700.00 | Window Closed / Lapsed |