US4382875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extraction treatment
Assignee: Diamond Shamrock Chemicals Co
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Filing: 1982-03-31
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Granted: 1983-05-10
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Expires: 2002-03-31
Abstract
Abstract This disclosure is directed to a process for extracting PTFE-wetting agent from PTFE particles containing small amounts of wetting agent in admixture with carbon particles comprising contacting said mixture with an organic liquid medium capable of extracting said wetting agent, and electrodes containing such extracted mixes. Also disclosed is a process for forming an electrode layer by depositing a soluble salt on a filter medium, depositing electrode layer material on said salt consolidating said electrode material and thereafter dissolving said salt.
Inventors
- 👤 Frank Solomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:31
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8875; C; C01; C01B; C01B32/00; C01B32/30; C01B32/354; C01B32/378; C25; C25B; C25B11/00; H01M4/90; H01M4/92; H01M4/925; H01M4/926; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A process of forming an electrode layer comprising depositing a soluble salt on a filter medium, depositing electrode layer material on said salt, consolidating said material and thereafter dissolving said salt.
Claim 2
Dependent Claim
31 words
A process of forming an electrode layer comprising depositing a soluble salt on a filter medium, depositing electrode layer material on said salt, consolidating said material and thereafter dissolving said salt.
References Cited (Backward Citations)
US3411954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |