US5137754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing fluorinated material employed in a fuel cell
Assignee: ONADA YOSHITOMI
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Filing: 1990-05-07
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Granted: 1992-08-11
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Expires: 2010-05-07
Abstract
Abstract A process for preparing hydrophobic material is disclosed which comprises applying a hydrocarbon polymer compound solution to the surface of material to be treated, vaporizing the solvent of the solution, and then fluorinating the polymer compound to coat the surface of the material to be treated with the fluorinated polymer compound.
Inventors
- 👤 Masahiro Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:30
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/02; H01M8/0202; H01M8/023; H01M8/0234; B; B05; B05D; B05D3/00; B05D3/10; C; C08; C08J; C08J7/00; C08J7/12; C08J7/126; H01M4/00; H01M4/86; H01M4/8605; H01M4/88; H01M4/8803; H01M4/8807; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
63 words
A process for preparing fluorinated particulate material employed in a fuel cell which comprises applying a solution of a hydrocarbon polymer compound in a solvent to the surface of a particulate material to be treated, vaporizing the solvent of the solution, and the fluorinating the polymer compound to coat the surface of the particulate material to be treated with the fluorinated polymer compound.
Claim 2
Dependent Claim
63 words
A process for preparing fluorinated particulate material employed in a fuel cell which comprises applying a solution of a hydrocarbon polymer compound in a solvent to the surface of a particulate material to be treated, vaporizing the solvent of the solution, and the fluorinating the polymer compound to coat the surface of the particulate material to be treated with the fluorinated polymer compound.
Claim 3
Dependent Claim
26 words
A process for preparing a fluorinated material in accordance with claim 1, wherein the polymer compound is polyethylene, polypropylene, or the copolymer of ethylene and propylene.
Claim 4
Dependent Claim
18 words
A process for preparing a fluorinated material in accordance with claim 1, wherein the solvent is a hydrocarbon.
Claim 5
Dependent Claim
24 words
A process for preparing a fluorinated material in accordance with claim 1, wherein the fluorinating is performed employing fluorine diluted with an inert gas.
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) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |