US2748071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for regeneration of etching media
Assignee: TECHNOGRAPH PRINTED CIRCUITS L
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Filing: 1951-08-30
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Granted: 1956-05-29
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Expires: 1971-08-30
Abstract
No abstract record available.
Inventors
- 👤 Eisler Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:44
CPC Classifications
C; C01; C01G; C01G49/00; C01G49/10; C23; C23F; C23F1/00; C23F1/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
AN APPARATUS COMPRISING AN ELECTROLYTIC CELL FORMED OF A TANK, A CATHODE AND ANODE, THE INSIDE WALLS OF SAID TANK BEING COMPOSED SUBSTANTIALLY OF CARBON CONSTITUTING THE ANODE OF SAID CELL, TWO PARTITIONS COMPOSED OF POROUS POLYVINYL CHLORIDE DISPOSED VERTICALLY WITHIN SAID TANK, SAID PARTITIONS CONSTITUTING THE WALLS OF A CATHODE CHAMBER, A PAIR OF ROLLERS, ONE POSITIONED WITHIN SAID CATHODIC CHAMBER AT THE BASE THEREOF, THE OTHER POSITIONED SUBSTANTIALLY ABOVE SAID CHAMBER, A CONTINUOUS NARROW STAINLESS STEEL BAND LACQUERED ON ITS INSIDE FACE AND
Claim 2
Independent Claim
85 words
AN APPARATUS COMPRISING AN ELECTROLYTIC CELL FORMED OF A TANK, A CATHODE AND ANODE, THE INSIDE WALLS OF SAID TANK BEING COMPOSED SUBSTANTIALLY OF CARBON CONSTITUTING THE ANODE OF SAID CELL, TWO PARTITIONS COMPOSED OF POROUS POLYVINYL CHLORIDE DISPOSED VERTICALLY WITHIN SAID TANK, SAID PARTITIONS CONSTITUTING THE WALLS OF A CATHODE CHAMBER, A PAIR OF ROLLERS, ONE POSITIONED WITHIN SAID CATHODIC CHAMBER AT THE BASE THEREOF, THE OTHER POSITIONED SUBSTANTIALLY ABOVE SAID CHAMBER, A CONTINUOUS NARROW STAINLESS STEEL BAND LACQUERED ON ITS INSIDE FACE AND
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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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |