Patent US5238950A successfully refreshed from Google Patents.
US3201282A
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Catalyst electrode
Assignee: Siemens Schuckertwerke AG
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Filing: 1959-07-13
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Granted: 1965-08-17
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Expires: 1979-07-13
Abstract
No abstract record available.
Inventors
- 👤 Justi Eduard
- 👤 Friese Karl-Hermann
- 👤 Winsel August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:53
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
AN ELECTRODE BODY, WHICH COMPRISES A CATLYTICALLY ACTIVE POROUS WORKING LAYER AND A CATALYTICALLY INACTIVE SURFACE LAYER, A PORTION OF SAID SURFACE LAYER COVERING AT LEAST A PORTION OF SAID WORKING LAYER AND BEING CONNECTED THERETO, THE PORTION OF SAID SURFACE LAYER COVERING SAID PORTION OF SAID WORKING LAYER BEING POROUS AND HAVING AN AVERAGE PORE RADIUS WHICH IS SMALLER THAN THE AVERAGE PORE RADIUS OF SAID WORKING LAYER.
Claim 2
Dependent Claim
69 words
AN ELECTRODE BODY, WHICH COMPRISES A CATLYTICALLY ACTIVE POROUS WORKING LAYER AND A CATALYTICALLY INACTIVE SURFACE LAYER, A PORTION OF SAID SURFACE LAYER COVERING AT LEAST A PORTION OF SAID WORKING LAYER AND BEING CONNECTED THERETO, THE PORTION OF SAID SURFACE LAYER COVERING SAID PORTION OF SAID WORKING LAYER BEING POROUS AND HAVING AN AVERAGE PORE RADIUS WHICH IS SMALLER THAN THE AVERAGE PORE RADIUS OF SAID WORKING LAYER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |