Patent US3620955A successfully refreshed from Google Patents.
US3620955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode cell
Assignee: Haden Drysys International Ltd
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Filing: 1969-05-16
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Granted: 1971-11-16
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Expires: 1989-05-16
Abstract
Abstract A cathodic cell for use in a paint electrode position process has a front wall constituted in part by a removable semipermeable membrane, backwall and sidewalls and a bottom, a cathode element, and locating means by which the cathode element can be selectively located in the cell in any one of a plurality of positions relative to the front wall.
Inventors
- 👤 Ivor Wynford Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:25
CPC Classifications
C; C25; C25D; C25D13/00; C25D13/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
23 words
A cathode structure according to claim 1, wherein the cathode element consists of a stainless steel grid secured to a said platelike members.
Claim 2
Dependent Claim
28 words
A cathode structure according to claim 1, wherein the bolts are metal bolts the shank of each of which is surrounded by a sleeve of electrically insulating material.
Claim 3
Dependent Claim
33 words
A cathode structure according to claim 1, wherein membrane is located between two gaskets one of which rests against the outer surfaces of said other pair of aligned limbs of the channel members.
Claim 4
Dependent Claim
30 words
A cathode structure according to claim 4, including an open-mesh cover spaced from the membrane on the side of the membrane opposite the side thereof which faces the cathode element.
Claim 5
Dependent Claim
21 words
A cathode structure according to claim 5, wherein the cover consists of a mild steel grill coated with a plastics material.
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |