Patent US4133738A successfully refreshed from Google Patents.
US4133738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode with a graded electrical resistance substrate
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1977-07-18
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Granted: 1979-01-09
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Expires: 1997-07-18
Abstract
Abstract An electrode is described which includes a current collector and a porous conducting substrate. The electric resistance of the conducting substrate is varied generally by a shaped structure resulting in low and high electrical resistance portions. The improved electrode increases the uniformity of electrodeposited zinc thereon.
Inventors
- 👤 Fritz G. Will
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:43
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; C; C25; C25C; C25C7/00; C25C7/02; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
An electrode comprising a current collector, a graded electrical resistance conducting substrate, the substrate having a low resistance thicker portion of dense carbon foam and a high resistance thinner portion of less dense carbon foam, and the substrate having a surface of the low resistance portion in electrical contact with the current collector.
Claim 2
Dependent Claim
53 words
An electrode comprising a current collector, a graded electrical resistance conducting substrate, the substrate having a low resistance thicker portion of dense carbon foam and a high resistance thinner portion of less dense carbon foam, and the substrate having a surface of the low resistance portion in electrical contact with the current collector.
Claim 3
Dependent Claim
35 words
An electrode comprising a current collector, a graded electrical resistance conducting substrate, the substrate having a low resistance center portion of dense carbon foam and high resistance edge portions of a less dense carbon foam.
Claim 4
Dependent Claim
35 words
An electrode comprising a current collector, a graded electrical resistance conducting substrate, the substrate having a low resistance center portion of dense carbon foam and high resistance edge portions of a less dense carbon foam.
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) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |