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Patent US4800661A successfully refreshed from Google Patents.
US4800661A
Expired / Lapsed
US
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Electric iron
Assignee: Toshiba Home Technology Corp
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Filing: 1987-05-18
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Granted: 1989-01-31
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Expires: 2007-05-18
Abstract
Abstract Disclosed is an electric iron including a heat-radiating base. A coating is formed on the lower side of the heat-radiating base. The coating is formed by mixing conductive fine powder and a polyethersulfone resin with a polytetrafluoroethylene resin.
Inventors
- 👤 Hiroshi Yamamoto
- 👤 Masaru Ishida
- 👤 Jin Watanabe
- 👤 Takashi Ishiwatari
- 👤 Kazuharu Tubaki
- 👤 Shinichi Nakanishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:27
CPC Classifications
D; D06; D06F; D06F75/00; D06F75/38; C; C08; C08K; C08K3/00; C08K3/02; C08K3/08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/18; C09; C09D; C09D5/00; C09D5/24; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
In an electric iron having a heat-radiating base, the improvement comprising that the heat-radiating base includes a coating located on a lower side thereof and formed of a mixture consisting essentially of a polytetrafluoroethylene resin and a conductive fine powder, the amount of the conductive fine powder being 5 to 15% by weight based on the amount of the polytetrafluoroethylene resin, wherein the conductive fine powder is formed of a material which is at least one member selected from the group consisting of aluminum, nickel, stainless steels, carbon blacks and carbon fibers.
Claim 2
Dependent Claim
92 words
In an electric iron having a heat-radiating base, the improvement comprising that the heat-radiating base includes a coating located on a lower side thereof and formed of a mixture consisting essentially of a polytetrafluoroethylene resin and a conductive fine powder, the amount of the conductive fine powder being 5 to 15% by weight based on the amount of the polytetrafluoroethylene resin, wherein the conductive fine powder is formed of a material which is at least one member selected from the group consisting of aluminum, nickel, stainless steels, carbon blacks and carbon fibers.
Claim 3
Dependent Claim
35 words
The electric iron of claim 1, wherein the heat-radiating base is formed of a material which is at least one member selected from the group consisting of aluminum, aluminum alloys, zinc alloys and stainless steels.
Claim 4
Dependent Claim
95 words
In an electric iron having a heat-radiating base, the improvement comprising that the heat-radiating base includes a coating located on a lower side thereof and formed of a mixture consisting essentially of a polytetrafluoroethylene resin, a conductive fine powder and a polyetheresulfone resin, the amount of the conductive fine powder being 5 to 15% by weight based on the amount of the polytetrafluoroethylene resin, wherein the conductive fine powder is formed of a material which is at least one member selected from the group consisting of aluminum, nickel, stainless steels, carbon blacks and carbon fibers.
Claim 5
Dependent Claim
95 words
In an electric iron having a heat-radiating base, the improvement comprising that the heat-radiating base includes a coating located on a lower side thereof and formed of a mixture consisting essentially of a polytetrafluoroethylene resin, a conductive fine powder and a polyetheresulfone resin, the amount of the conductive fine powder being 5 to 15% by weight based on the amount of the polytetrafluoroethylene resin, wherein the conductive fine powder is formed of a material which is at least one member selected from the group consisting of aluminum, nickel, stainless steels, carbon blacks and carbon fibers.
Claim 6
Dependent Claim
35 words
The electric iron of claim 3, wherein the heat-radiating base is formed of a material which is at least one member selected from the group consisting of aluminum, aluminum alloys, zinc alloys and stainless steels.
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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) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |