Patent US3615841A successfully refreshed from Google Patents.
US3615841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical cell
Assignee: Leesona Corp
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Filing: 1968-07-31
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Granted: 1971-10-26
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Expires: 1988-07-31
Abstract
Abstract A method of forming lightweight electrodes is described comprising forming an admixture of electrochemically active metal and hydrophobic polymer in a fluid medium, applying said admixture to a porous metal support, lightly pressing the admixture into and around the metal support and thereafter heating in the absence of applied pressure at a temperature sufficient to bond said polymer particles to each other and to said support.
Inventors
- 👤 Stanley W Smith
- 👤 Edward I Thiery
- 👤 Jose D Giner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:01
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8878; H01M4/8882; H01M4/8885; H01M4/8663; H01M4/8825; H01M4/8828; H01M4/8875; H01M4/8896; H01M4/90; H01M4/92; H01M4/8803; H01M8/00; H01M8/02; H01M8/0202; H01M8/023; H01M8/0232; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
40 words
The method of claim 1, including the step of kneading the admixture into a doughlike mass to remove the major portion of the fluid medium and wherein the unitary layer is formed by rolling the admixture into a thin film.
Claim 2
Dependent Claim
18 words
The method of claim 2, including the step of pressing said thin film into a porous metal support.
Claim 3
Dependent Claim
11 words
The method of claim 3 wherein the fluid medium is water.
Claim 4
Dependent Claim
11 words
The method of claim 4 wherein the hydrophobic polymer is polytetrafluoroethylene.
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein said uniform admixture is formed by dispersing the hydrophobic polymer particles in a fluid medium and said metal particles are added to the dispersion.
Claim 6
Dependent Claim
26 words
The method of claim 6 wherein the unitary layer is formed by spraying said admixture onto a porous metal support and lightly pressing the resultant structure.
Claim 7
Dependent Claim
17 words
The method of claim 6 wherein the fluid medium is xylene and the hydrophobic polymer is polytrifluorochloroethylene.
Claim 8
Dependent Claim
11 words
The method of claim 7 wherein the metal support is tantalum.
Claim 9
Dependent Claim
29 words
The method of claim 1 wherein the electrochemically active metal is selected from the group consisting of columbium, nickel, iron, gold, copper, palladium, platInum, rhodium, ruthenium, osmium, and iridium.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |