US3242065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cell for electrolysis of hydrochloric acid
Assignee: De Nora SpA
•
Filing: 1960-12-21
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Granted: 1966-03-22
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Expires: 1980-12-21
Abstract
No abstract record available.
Inventors
- 👤 Nora Oronzio De
- 👤 Messner George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:50
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/70; C25B9/73; C25B9/75; C25B9/77
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN AN ELECTROLYTIC CELL OF THE FILTER PRESS TYPE FOR THE PRODUCTION OF CL2 AND H2 BY THE ELECTROLYSIS OF HYDROCHLORIC ACID, FILTER PRESS FRAME MEMBERS OF CHLORINE AND ACID RESISTANT MATERIAL, HYDROCHLORIC ACID INLETS INTO SAID FRAME MEMBERS, CL2 H2 AND SPENT ACID OUTLETS IN SAID FRAME MEMBERS, THE SAID INLETS AND OUTLETS OF ONE FRAME MEMBER COMMUNICATING WITH SIMILAR INLETS AND OUTLETS OF ADJACENT FRAME MEMBERS, CATHODE PLATE MEMBERS SECURED IN SAID FRAME MEMBERS, SAID PLATE MEMBERS HAVING ACTIVATED SURFACES OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF GRAPHITE AND COKE, INTEGRAL GROOVES ON ONE SIDE OF SAID PLATE MEMBERS FORMING THE CATHODE PLATES, THE OTHER SIDE OF SAID PLATES BEING SUBSTANTIALLY SMOOTH, AN IMPREGNATING MATERIAL SEALING THE SMOOTH SIDE OF SAID
Claim 2
Dependent Claim
125 words
IN AN ELECTROLYTIC CELL OF THE FILTER PRESS TYPE FOR THE PRODUCTION OF CL2 AND H2 BY THE ELECTROLYSIS OF HYDROCHLORIC ACID, FILTER PRESS FRAME MEMBERS OF CHLORINE AND ACID RESISTANT MATERIAL, HYDROCHLORIC ACID INLETS INTO SAID FRAME MEMBERS, CL2 H2 AND SPENT ACID OUTLETS IN SAID FRAME MEMBERS, THE SAID INLETS AND OUTLETS OF ONE FRAME MEMBER COMMUNICATING WITH SIMILAR INLETS AND OUTLETS OF ADJACENT FRAME MEMBERS, CATHODE PLATE MEMBERS SECURED IN SAID FRAME MEMBERS, SAID PLATE MEMBERS HAVING ACTIVATED SURFACES OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF GRAPHITE AND COKE, INTEGRAL GROOVES ON ONE SIDE OF SAID PLATE MEMBERS FORMING THE CATHODE PLATES, THE OTHER SIDE OF SAID PLATES BEING SUBSTANTIALLY SMOOTH, AN IMPREGNATING MATERIAL SEALING THE SMOOTH SIDE OF SAID
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |