Patent DK57109C successfully refreshed from Google Patents.
Patent US107376A successfully refreshed from Google Patents.
Patent US4639693A successfully refreshed from Google Patents.
US4639693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strip line cable comprised of conductor pairs which are surrounded by porous dielectric
Assignee: Junkosha Co Ltd
•
Filing: 1985-04-15
•
Granted: 1987-01-27
•
Expires: 2005-04-15
Abstract
Abstract An improved strip line cable for transmission of electromagnetic waves in the millimeter wave length range is provided. The cable has a plurality of face to face conductors in pairs, the conductors being separated from their paired counterparts by a porous plastic dielectric insulation material. The cable is jacketed. The improvement comprises the porous plastic dielectric material being, in addition, placed between each conductor and the jacketing material, thereby resulting in each conductor being effectively surrounded by porous plastic dielectric insulating material.
Inventors
- 👤 Hirosuke Suzuki
- 👤 Hiromi Yasumoto
- 👤 Hiroshi Umemoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:21
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/02; H01P3/08; H01P3/088; H01B; H01B7/00; H01B7/08; H01B7/0838; H05; H05K; H05K1/00; H05K1/02; H05K1/0213; H05K1/0237; H05K1/024; H05K1/03; H05K1/0393; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0116; H05K2201/0137; H05K2201/015; H05K2201/0183; H05K2201/0187; H05K2201/0195; H05K2201/07; H05K2201/0707; H05K2201/0715; H05K3/00; H05K3/22; H05K3/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
64 words
A strip line cable comprising a plurality of pairs of electrical conductors having a porous strip of dielectric insulation material interposed between the conductors of said pairs, and a covering jacket covering said conductors and having, in addition, an insulation layer of a porous plastic dielectric material provided between said conductors and said covering jacket such that porous dielectric surrounds each individual said conductor.
Claim 2
Dependent Claim
64 words
A strip line cable comprising a plurality of pairs of electrical conductors having a porous strip of dielectric insulation material interposed between the conductors of said pairs, and a covering jacket covering said conductors and having, in addition, an insulation layer of a porous plastic dielectric material provided between said conductors and said covering jacket such that porous dielectric surrounds each individual said conductor.
Claim 3
Dependent Claim
14 words
The cable of claim 1 wherein the porous insulation material is expanded, porous polytetrafluoroethylene.
Claim 4
Dependent Claim
17 words
The cable of claim 1 wherein said covering has a shielding layer on the outer periphery thereof.
Claim 5
Dependent Claim
33 words
The cable of claim 1 wherein an insulation layer of a nonporous plastic material is interposed between said strip of dielectric material and said conductors on at least one side of said strip.
References Cited (Backward Citations)
US3004229A
Cited
US2994050A
Cited
JPS5413981A
Cited
JPS5550701A
Cited
US4382236A
Cited
US4443657A
Cited
US4490690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |