Patent US5211827A successfully refreshed from Google Patents.
US5211827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical cell with ionic semiconductor separator
Assignee: T and G Corp
•
Filing: 1991-08-05
•
Granted: 1993-05-18
•
Expires: 2011-08-05
Abstract
Abstract An electrochemical cell employs an ionic semiconductor material as a separator between an anolyte and a catholyte. Ionic semiconductor material includes 10 to approximately 50 percent by weight of a hydrogel which is dispersed within an inert nonporous matrix material to form a composite wherein the quantity of water that can be absorbed by the composite does not substantially exceed the weight of the composite.
Inventors
- 👤 Robert L. Peck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:57
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/0208; A61K47/00; A61K47/50; A61K47/51; A61K8/04; A61K8/042; A61K8/18; A61K8/72; A61K8/73; A61K8/731; A61K8/84; A61K8/87; A61L; A61L26/00; A61L26/0061; A61L26/008; A61Q; A61Q17/00; B; B01; B01D; B01D69/00; B01D69/14; B01D69/141; B01D69/1411; C; C25; C25B; C25B1/00; C25B1/01; C25B1/02; C25B1/04; C25B13/00; C25B13/04; C25B13/08; C25B9/00; C25B9/70; C25B9/73; G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/40; H; H01; H01M; H01M10/00; H01M10/20; H01M10/36; H01M12/00; H01M12/04; H01M12/06; H01M4/00; H01M4/02; H01M4/62; H01M4/621; H01M4/86; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/414; H01M50/417; H01M50/42; H01M50/423; H01M50/426; H01M6/00; H01M6/24; H01M8/00; H01M8/08; H01M8/18; H01M8/184; H01M8/188; A61K2800/00; A61K2800/40; A61K2800/59; A61K2800/594; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/36; Y02E60/50
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
99 words
An electrochemical cell comprising: an anode; an anolyte; a cathode; a catholyte, the catholyte having a different pH when compared to the anolyte; a membrane separating said anolyte from said catholyte, said membrane comprising a nonporous solid composite material which is formed by a hydrogel substantially uniformly dispersed throughout an inert man made matrix material with said hydrogel comprising approximately 10 to 50% by weight of the dry composite material, ions selectively passing through said membrane from said anolyte to said catholyte whereby an electric current may flow through an external circuit connected between said anode and said cathode.
Claim 2
Dependent Claim
99 words
An electrochemical cell comprising: an anode; an anolyte; a cathode; a catholyte, the catholyte having a different pH when compared to the anolyte; a membrane separating said anolyte from said catholyte, said membrane comprising a nonporous solid composite material which is formed by a hydrogel substantially uniformly dispersed throughout an inert man made matrix material with said hydrogel comprising approximately 10 to 50% by weight of the dry composite material, ions selectively passing through said membrane from said anolyte to said catholyte whereby an electric current may flow through an external circuit connected between said anode and said cathode.
Claim 3
Dependent Claim
24 words
The cell of claim 1 wherein the pH difference between said anolyte and said catholyte has an absolute value of at least 1.0 pH.
Claim 4
Dependent Claim
29 words
The cell of claim 1 wherein anions selectively pass through said membrane from said anolyte to said catholyte and cations simultaneously selectively pass from said catholyte to said anolyte.
Claim 5
Dependent Claim
30 words
The cell of claim 1 wherein the matrix material is selected from the group consisting of polyvinylidene chloride, polyvinyl chloride, polyvinylidene fluoride, polyethylene, polypropylene, polyurethane, vinyl acetate/ethylene, and phenol formaldehyde.
Claim 6
Dependent Claim
24 words
The cell of claim 4 wherein the hydrogel is a synthetic material selected from the group consisting of polyethylene oxide, polyacrylic acid and polyacrylamide.
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) | 1996-05-17 | 1996-11-16 | 1997-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-17 | 2000-11-16 | 2001-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-17 | 2004-11-16 | 2005-05-18 | $7700.00 | Window Closed / Lapsed |