US4645868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical transmission line
Assignee: Junkosha Co Ltd
•
Filing: 1985-04-15
•
Granted: 1987-02-24
•
Expires: 2005-04-15
Abstract
Abstract A high speed electrical transmission line is provided comprising a plurality of elongate conductor wires arranged in parallel relationship and encased in an outer insulating covering jacket having generally a rectangular cross-section and wherein each conductor is further encased within the outer jacket in an insulating covering of a porous resin material.
Inventors
- 👤 Hirosuke Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:08
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/08; H01B7/0823; H01B7/02; H01B7/0233
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
88 words
A high speed electrical transmission line comprising an elongated signal conductor wire arranged in parallel relationship with two ground wires, one on either side of said signal conductor wire, all three wires being encased in an outer nonporous insulating covering jacket having generally a rectangular cross-section, and wherein each said wire is further individually encased within the outer jacket in an insulating inner covering of a porous resin material, wherein said porous resin has, in addition to the pores in the resin, a large number of through holes.
Claim 2
Dependent Claim
88 words
A high speed electrical transmission line comprising an elongated signal conductor wire arranged in parallel relationship with two ground wires, one on either side of said signal conductor wire, all three wires being encased in an outer nonporous insulating covering jacket having generally a rectangular cross-section, and wherein each said wire is further individually encased within the outer jacket in an insulating inner covering of a porous resin material, wherein said porous resin has, in addition to the pores in the resin, a large number of through holes.
Claim 3
Dependent Claim
15 words
The transmission line of claim 1 wherein said porous resin material is expanded porous polytetrafluoroethylene.
Claim 4
Dependent Claim
111 words
A multiple component transmission line in the form of a flat cable wherein a plurality of unit transmission lines are joined together in side-by-side relationship wherein each unit transmission line comprises an elongated signal conductor wire arranged in parallel relationship with two ground wires, one on either side of said signal conductor wire, all three wires being encased in an outer nonporous insulating covering jacket having generally a rectangular cross-section, wherein each said wire is further individually encased within the outer jacekt in an insulating inner covering of a porous resin material, wherein said porous resin has, in addition to the pores in the resin, a large number of through holes.
Claim 5
Dependent Claim
111 words
A multiple component transmission line in the form of a flat cable wherein a plurality of unit transmission lines are joined together in side-by-side relationship wherein each unit transmission line comprises an elongated signal conductor wire arranged in parallel relationship with two ground wires, one on either side of said signal conductor wire, all three wires being encased in an outer nonporous insulating covering jacket having generally a rectangular cross-section, wherein each said wire is further individually encased within the outer jacekt in an insulating inner covering of a porous resin material, wherein said porous resin has, in addition to the pores in the resin, a large number of through holes.
Claim 6
Dependent Claim
29 words
The multiple component transmission line of claim 3 wherein said plurality of transmission lines are joined in side-by-side relationship at discrete intervals along the longitudinal dimension of said line.
References Cited (Backward Citations)
US3219752A
Cited
US3953566A
Cited
US3735022A
Cited
US3688016A
Cited
US4176910A
Cited
US4185162A
Cited
US4220807A
Cited
US4381208A
Cited
US4443657A
Cited
US4423282A
Cited
US4468089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |