US4950538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoreresin-containing coating composition and use thereof
Assignee: Daikin Industries Ltd
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Filing: 1989-07-28
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Granted: 1990-08-21
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Expires: 2009-07-28
Abstract
Abstract A fluororesin-containing composition comprising a fluororesin, a fibrous material coated by an electrically conductive oxide, an acrylic resin and a liquid medium wherein the weight ratio of the fluororesin to the fibrous material is from 95:5 to 50:50, and the weight ratio of the fluororesin to the acrylic resin is from 100:0 to 85:15. The coating formed form the composition has good heat, chemical and weather resistance and non-tackiness properties.
Inventors
- 👤 Norimasa Honda
- 👤 Masahiro Sano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:59
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/02; C08L; C08L27/00; C08L27/02; C08L27/12; C08L33/00; C08L33/04; C08L33/06; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/1352; Y10T428/1362; Y10T428/1372; Y10T428/26; Y10T428/263; Y10T428/29; Y10T428/2913; Y10T428/2915; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/31504; Y10T428/3154; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2189; Y10T442/2221; Y10T442/2238; Y10T442/2631; Y10T442/2713
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
A fixing heater roller comprising a roller base member and a covering layer which comprises a fluororesin, a fibrous material having an electrically conductive oxide coated thereon, wherein said fibrous material has a diameter of from 0.01 to 10 micrometers and a length of from 1 to 100 micrometers and selected from the group consisting of fibrous potassium titanate, fibrous silicon carbide, fibrous silicon nitride, fibrous a-alumina and fibrous boron carbide, an acrylic resin selected from the group consisting of polymethyl methacrylate, polymethyl acrylate and polyethyl acrylate and a liquid medium, wherein a weight ratio of the fluororesin to the fibrous material is from 95:5 to 50:50, and that of the fluororesin to the acrylic resin is from 100:0 to 85:15.
Claim 2
Dependent Claim
121 words
A fixing heater roller comprising a roller base member and a covering layer which comprises a fluororesin, a fibrous material having an electrically conductive oxide coated thereon, wherein said fibrous material has a diameter of from 0.01 to 10 micrometers and a length of from 1 to 100 micrometers and selected from the group consisting of fibrous potassium titanate, fibrous silicon carbide, fibrous silicon nitride, fibrous a-alumina and fibrous boron carbide, an acrylic resin selected from the group consisting of polymethyl methacrylate, polymethyl acrylate and polyethyl acrylate and a liquid medium, wherein a weight ratio of the fluororesin to the fibrous material is from 95:5 to 50:50, and that of the fluororesin to the acrylic resin is from 100:0 to 85:15.
Claim 3
Dependent Claim
16 words
The fixing heater roller according to claim 1, wherein the fibrous material is fibrous potassium titanate.
Claim 4
Dependent Claim
18 words
The fixing heater roller according to claim 1, wherein the conductive oxide is stannic dioxide and diantimony trioxide.
Claim 5
Dependent Claim
36 words
The fixing heater roller according to claim 1, wherein the fluororesin is selected from the group consisting of polytetrafluoroethylene, a copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether, a copolymer of tetrafluoroethylene and hexafluoropropylene and mixtures thereof.
Claim 6
Dependent Claim
24 words
The fixing heater roller according to claim 1, wherein the liquid medium is selected from the group consisting of water, benzene, toluene and xylene.
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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) | 1993-08-20 | 1994-02-19 | 1994-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-20 | 1998-02-19 | 1998-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-20 | 2002-02-19 | 2002-08-21 | $7700.00 | Window Closed / Lapsed |