US2870068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroformed screens
Assignee: Diamond Gardner Corp
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Filing: 1956-01-30
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Granted: 1959-01-20
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Expires: 1976-01-30
Abstract
No abstract record available.
Inventors
- 👤 Glenn R Schaer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:41
CPC Classifications
C; C25; C25D; C25D1/00; C25D1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS FOR ELECTROFORMING SCREENS IN AN ELECTROLYTIC CELL HAVING AN ANODE AND PRIMARY AND SECONDARY CATHODES WITH THE PRIMARY CATHODE BETWEEN THE ANODE AND SECONDARY CATHODE AND HAVING A PLURALITY OF HOLES THERETHROUGH, COMPRISING NON-ADHERENTLY ELECTROPLATING A LAYER OF SCREEN MATERIAL ON SAID PRIMARY CATHODE MAINTAINING THE RATIO OF PRIMARY CATHODE CURRENT TO SECONDARY CATHODE CURRENT SUBSTANTIALLY NO GREATER THAN THE RATIO OF SOLID AREA TO HOLE AREA OF THE PRIMARY CATHODE, MAINTAINING THE POTENTIAL DIFFERENCE BETWEEN THE ANODE AND THE SECONDARY CATHODE GREATER THAN BETWEEN THE ANODE AND THE PRIMARY CATHODE, AND MECHANICALLY REMOVING SAID LAYER FROM SAID CATHODE AS AN ENTITY.
Claim 2
Dependent Claim
104 words
A PROCESS FOR ELECTROFORMING SCREENS IN AN ELECTROLYTIC CELL HAVING AN ANODE AND PRIMARY AND SECONDARY CATHODES WITH THE PRIMARY CATHODE BETWEEN THE ANODE AND SECONDARY CATHODE AND HAVING A PLURALITY OF HOLES THERETHROUGH, COMPRISING NON-ADHERENTLY ELECTROPLATING A LAYER OF SCREEN MATERIAL ON SAID PRIMARY CATHODE MAINTAINING THE RATIO OF PRIMARY CATHODE CURRENT TO SECONDARY CATHODE CURRENT SUBSTANTIALLY NO GREATER THAN THE RATIO OF SOLID AREA TO HOLE AREA OF THE PRIMARY CATHODE, MAINTAINING THE POTENTIAL DIFFERENCE BETWEEN THE ANODE AND THE SECONDARY CATHODE GREATER THAN BETWEEN THE ANODE AND THE PRIMARY CATHODE, AND MECHANICALLY REMOVING SAID LAYER FROM SAID CATHODE AS AN ENTITY.
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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |