US4733056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater backed with a ceramic substrate
Assignee: Niterra Co Ltd
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Filing: 1986-08-15
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Granted: 1988-03-22
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Expires: 2006-08-15
Abstract
Abstract A heater backed with a ceramic substrate having a ceramic substrate as a base plate and heating element formed thereon, which comprises a conductor for retaining ionized elements, said conductor branching from a terminal lead portion of the minus side connected to the heater element under an applied electric current and extending at the back side of the base plate, along the heating element pattern at least partly thereof. A protecting layer may be provided on the surface of said conductor. The conductor is connected with the lead portion through a conducting through hole.
Inventors
- 👤 Takao Kojima
- 👤 Hiroyuki Ishiguro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:21
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/28; H05B3/283; F; F01; F01N; F01N3/00; F01N3/02; F01N3/021; F01N3/023; F01N3/027
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
69 words
A heater backed with a ceramic substrate having a ceramic substrate as a base plate and heating element formed thereon, which comprises a conductor for retaining ionized elements, said conductor branching from a terminal lead portion of the minus side connected to the heater element under an applied electric current and extending at the back side of the base plate, along the heating element pattern at least partly thereof.
Claim 2
Dependent Claim
69 words
A heater backed with a ceramic substrate having a ceramic substrate as a base plate and heating element formed thereon, which comprises a conductor for retaining ionized elements, said conductor branching from a terminal lead portion of the minus side connected to the heater element under an applied electric current and extending at the back side of the base plate, along the heating element pattern at least partly thereof.
Claim 3
Dependent Claim
23 words
A heater backed with a ceramic substrate according to claim 1, wherein a protecting layer is provided on the surface of said conductor.
Claim 4
Dependent Claim
25 words
A heater backed with a ceramic substrate according to claim 1, wherein said conductor is connected with the lead portion through a conducting through hole.
Claim 5
Dependent Claim
21 words
A heater backed with a ceramic substrate according to claim 1, wherein the conductor extends substantially parallel with the heating element.
Claim 6
Dependent Claim
35 words
A heater backed with a ceramic substrate according to claim 4, wherein the conductor extends at least on the back portion which corresonds to the connecting point between the heating element and the lead portion.
References Cited (Backward Citations)
US4357526A
Cited
US4464646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-22 | 1991-09-21 | 1992-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-22 | 1995-09-21 | 1996-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-22 | 1999-09-21 | 2000-03-22 | $7700.00 | Window Closed / Lapsed |