US4455481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window pane with embedded therein an electrical heating wire
Assignee: US Philips Corp
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Filing: 1982-02-05
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Granted: 1984-06-19
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Expires: 2002-02-05
Abstract
Abstract Window panes are provided with electrically conductive wires. At the desired small diameter of less than 50 micrometers the wires which have been used so far have too high a resistance per unit length. The invention provides a sufficiently strong, thin electrically conducting wire having an electric resistivity from 2.0-5.0μ Ω cm.
Inventors
- 👤 Isidoor K. Van Hoof
- 👤 Johannes H. P. M. van den Bergh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:35
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/84; H05B3/10; H05B3/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12146; Y10T428/12493; Y10T428/12535; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/1284; Y10T428/24; Y10T428/24942
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
77 words
A window pane having embedded therein an electrically conductive wire characterized in that said wire has a diameter of less than 3 micrometers, an electrical resistivity of from 2.0 to 5.0 μΩ/cm and is formed of a core of an electrically conductive metal selected from the group consisting of copper, silver and gold coated with a metal cladding selected from the group consisting of tungsten, molybdenum and a tungsten molybdenum alloy blackened with a coating of graphite.
Claim 2
Dependent Claim
77 words
A window pane having embedded therein an electrically conductive wire characterized in that said wire has a diameter of less than 3 micrometers, an electrical resistivity of from 2.0 to 5.0 μΩ/cm and is formed of a core of an electrically conductive metal selected from the group consisting of copper, silver and gold coated with a metal cladding selected from the group consisting of tungsten, molybdenum and a tungsten molybdenum alloy blackened with a coating of graphite.
Claim 3
Dependent Claim
78 words
A window pane having embedded therein an electrically conductive wire characterized in that said wire has a diameter of less than 3 micrometers, an electrical resistivity of from 2.0 to 5.0 μΩ/cm and is formed of a core of an electrically conductive metal selected from the group consisting of copper, silver and gold coated with a metal cladding selected from the group consisting of tungsten, molybdenum and a tungsten molybdenum alloy blackened with a coating of molybdenum disulfide.
Claim 4
Dependent Claim
78 words
A window pane having embedded therein an electrically conductive wire characterized in that said wire has a diameter of less than 3 micrometers, an electrical resistivity of from 2.0 to 5.0 μΩ/cm and is formed of a core of an electrically conductive metal selected from the group consisting of copper, silver and gold coated with a metal cladding selected from the group consisting of tungsten, molybdenum and a tungsten molybdenum alloy blackened with a coating of molybdenum disulfide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-19 | 1987-12-19 | 1988-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-19 | 1991-12-19 | 1992-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-19 | 1995-12-19 | 1996-06-19 | $7700.00 | Window Closed / Lapsed |