US4653500A
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Electrocardiographic amorphous alloy electrode
Assignee: Organization World Intellectual Property
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Filing: 1985-12-17
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Granted: 1987-03-31
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Expires: 2005-12-17
Abstract
Abstract An electrocardiographic amorphous alloy electrode is manufactured from an iron-based (or nickel-based) amorphous alloy containing chromium as a metallic element and also containing at least one member of a group consisting of phosphorus, carbon, silicon and boron as a non-metallic element or semi-metallic elements.
Inventors
- 👤 Soichi Osada
- 👤 Hirokatsu Inoue
- 👤 Chuji Shimizu
- 👤 Yasuaki Onodera
- 👤 Ken-ichi Kobayashi
- 👤 Kazuo Kozima
- 👤 Shigeyoshi Shioda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:16
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/263; A61B5/279; A61B5/28; H; H01; H01B; H01B1/00; H01B1/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
63 words
An electrocardiographic electrode consisting of an iron-based amorphous alloy containing iron, chromium and molybdenum as metallic elements and at least one non-metallic element selected from the group consisting of phosphorus, carbon, silicon and boron, the content of molybdenum being less than 20 atomic percent, and the sum of the concentrations of molybdenum and chromium being from about 1 to about 35 atomic percent.
Claim 2
Dependent Claim
63 words
An electrocardiographic electrode consisting of an iron-based amorphous alloy containing iron, chromium and molybdenum as metallic elements and at least one non-metallic element selected from the group consisting of phosphorus, carbon, silicon and boron, the content of molybdenum being less than 20 atomic percent, and the sum of the concentrations of molybdenum and chromium being from about 1 to about 35 atomic percent.
Claim 3
Dependent Claim
13 words
An electrocardiographic electrode according to claim 1 wherein said non-metallic element comprises phosphorus.
Claim 4
Dependent Claim
22 words
An electrocardiographic electrode according to claim 1 containing at least one member of the group consisting of phosphorus-carbon, phosphorus-silicon, phosphorus-boron and carbon-boron.
Claim 5
Dependent Claim
24 words
An electrocardiographic electrode according to claim 1 wherein said non-metallic element is present in a concentration from about 10 to about 25 atomic percent.
Claim 6
Dependent Claim
39 words
An electrocardiographic electrode according to claim 1 wherein the concentration of molybdenum is at least about 5 atomic percent, the concentration of chromium is at least about 10 atomic percent, and the remainder of the metallic elements is iron.
Claim 7
Dependent Claim
39 words
An electrocardiographic electrode according to claim 1 wherein the concentration of molybdenum is at least about 10 atomic percent, the concentration of chromium is at least about 5 atomic percent and the remainder of the metallic elements is iron.
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) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |