Patent US3915836A successfully refreshed from Google Patents.
US3915836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
HCl electrolysis frame with a graphite plate arranged therein
Assignee: Bayer AG
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Filing: 1974-04-04
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Granted: 1975-10-28
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Expires: 1994-04-04
Abstract
Abstract An HCl electrolysis frame with a graphite plate arranged therein, comprising expansion joints and optionally elastic seals arranged between the electrolysis frame and graphite plate, the connection between the electrolysis frame and the graphite plate being not rigid, and releasable connecting elements serving to hold the graphite plates.
Inventors
- 👤 Hans Born
- 👤 Karl-Josef Schwickart
- 👤 Edmund Urban
- 👤 Wolf-Dieter Volkmann
- 👤 Gunter Mohrs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:21
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/60; C25B9/63
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN AN HCL-ELECTROLYSIS PLATE AND FRAME ASSEMBLY COMPRISING A FRAME, A GRAPHITE PLATE IN SAID FRAME, RELEASABLE CONNECTING ELEMENTS HOLDING SAID PLATE IN SAID FRAME, AND NON-RIGID CONNECTORS BETWEEN SAID PLATE AND FRAME PERMITTING EXPLANSION OF THE PLATE RELATIVE MOVEMENT BETWEEN THE PLATE AND FRAME, THE IMPROVEMENT COMPRISING CEMENTING PARTS ON THE GRAPHIC PLATE OR ON THE ELECTROLYSIS FRAME WHICH ARE SEPARATED FROM THE NON-RIGID CONNECTORS AND THE ELECTROLYSIS FRAME OR THE GRAPHITE PLATE BY CHAMBERS PARTLY PROVIDED WITH LININGS OR ARE SEPARATED FROM THE ELECTROLYSIS FRAME OR THE GRAPHITE PLATE BY A THIN PROTECTIVE COATING AND SAID FRAME IS PROVIDED WITH A GROOVE TO GUIDE A DEVICE FOR CUTTING OFF SAID CEMENTING PARTS WHEN IT IS DESIRED TO REMOVE THE PLATE FROM THE FRAME.
Claim 2
Dependent Claim
125 words
IN AN HCL-ELECTROLYSIS PLATE AND FRAME ASSEMBLY COMPRISING A FRAME, A GRAPHITE PLATE IN SAID FRAME, RELEASABLE CONNECTING ELEMENTS HOLDING SAID PLATE IN SAID FRAME, AND NON-RIGID CONNECTORS BETWEEN SAID PLATE AND FRAME PERMITTING EXPLANSION OF THE PLATE RELATIVE MOVEMENT BETWEEN THE PLATE AND FRAME, THE IMPROVEMENT COMPRISING CEMENTING PARTS ON THE GRAPHIC PLATE OR ON THE ELECTROLYSIS FRAME WHICH ARE SEPARATED FROM THE NON-RIGID CONNECTORS AND THE ELECTROLYSIS FRAME OR THE GRAPHITE PLATE BY CHAMBERS PARTLY PROVIDED WITH LININGS OR ARE SEPARATED FROM THE ELECTROLYSIS FRAME OR THE GRAPHITE PLATE BY A THIN PROTECTIVE COATING AND SAID FRAME IS PROVIDED WITH A GROOVE TO GUIDE A DEVICE FOR CUTTING OFF SAID CEMENTING PARTS WHEN IT IS DESIRED TO REMOVE THE PLATE FROM THE FRAME.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |