US2860100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm cells
Assignee: Pennwalt Corp
•
Filing: 1954-05-10
•
Granted: 1958-11-11
•
Expires: 1974-05-10
Abstract
No abstract record available.
Inventors
- 👤 Krzyszkowski Leszek Jan Konrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:57
CPC Classifications
C; C25; C25B; C25B13/00; C25B13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN AN ELECTROLYTIC DIAPHRAGM CELL COMPRISING AN ANODE, A CATHODE, AN ANOLYTE CHAMBER AND A CATHOLYTE CHAMBER, A PREFORMED PERVIOUS DIAPHROM ARRANGED SUBSTANTIALLY VERTICALLY BETWEEN THE ANODE AND THE CATHODE AND HAVING A SERIES OF IMPERVIOUS LINES DIVING THE AREA OF THE DIAPHRAGM INTO PERVIOUS SPACES WHICH ARE PROGRESSIVELY SMALLER FROM THE TOP TO THE BOTTOM OF THE DIAPHRAGM
Claim 2
Dependent Claim
59 words
IN AN ELECTROLYTIC DIAPHRAGM CELL COMPRISING AN ANODE, A CATHODE, AN ANOLYTE CHAMBER AND A CATHOLYTE CHAMBER, A PREFORMED PERVIOUS DIAPHROM ARRANGED SUBSTANTIALLY VERTICALLY BETWEEN THE ANODE AND THE CATHODE AND HAVING A SERIES OF IMPERVIOUS LINES DIVING THE AREA OF THE DIAPHRAGM INTO PERVIOUS SPACES WHICH ARE PROGRESSIVELY SMALLER FROM THE TOP TO THE BOTTOM OF THE DIAPHRAGM
References Cited (Backward Citations)
US1357400A
Cited
US1299519A
Cited
US1831406A
Cited
US1771091A
Cited
US2228264A
Cited
US2591755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |