US5227231A
Expired / Lapsed
US
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Electrical resistive material
Assignee: SUSUMO Co Ltd
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Filing: 1992-01-03
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Granted: 1993-07-13
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Expires: 2012-01-03
Abstract
Abstract An electrical resistive material used for making e.g. a heating element for a thermal printing element. It is a Cr--Al--B--Zr--O alloy and is composed of a quaternary alloy and 15 to 25 at % of oxygen, wherein the quaternary alloy is composed of 2 to 25 at % of zirconium and a ternary alloy containing 35 to 55 at % of chromium, 2 to 23 at % of aluminium and 37 to 58 at % of boron.
Inventors
- 👤 Sadao Yoshizaki
- 👤 Kazuya Nishimura
- 👤 Masami Kawabayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:32
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/06; H01C7/006; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
70 words
An electrical resistive material comprising: i) a Cr--Al--B--Zr quaternary alloy comprising: a) a ternary alloy comprising: i) 35-55 atomic % or Cr; ii) 2-23 atomic % of Al; and iii) 37-58 atomic % of B; and b) 2-25 atomic % of Zr, based on the total of Cr, Al, B, and Zr; and ii) 15-25 atomic % of oxygen based on the total of Cr, Al, B, Zr and O.
Claim 2
Dependent Claim
70 words
An electrical resistive material comprising: i) a Cr--Al--B--Zr quaternary alloy comprising: a) a ternary alloy comprising: i) 35-55 atomic % or Cr; ii) 2-23 atomic % of Al; and iii) 37-58 atomic % of B; and b) 2-25 atomic % of Zr, based on the total of Cr, Al, B, and Zr; and ii) 15-25 atomic % of oxygen based on the total of Cr, Al, B, Zr and O.
Claim 3
Dependent Claim
33 words
The electrical resistive material of claim 1, wherein said material is in the form of a thin film, having a thickness of 20-100 nm, formed on the surface of an electrical insulating substrate.
Claim 4
Dependent Claim
14 words
The electrical resistive material of claim 2, wherein said substrate is a ceramic substrate.
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) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |