US2828250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the electrolytic oxidation of copper wire
Assignee: General Electric Co
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Filing: 1955-06-28
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Granted: 1958-03-25
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Expires: 1975-06-28
Abstract
No abstract record available.
Inventors
- 👤 Dallas T Hurd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:42
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/34; H; H01; H01B; H01B3/00; H01B3/02; H01B3/10; H01B3/105
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
THE METHOD OF OXIDIZING COPPER WIRE WHICH COMPRISES CAUSING SAID WIRE TO TRAVEL THROUGH AN ELECTROLYTIC CELL HAVING A CATHODE AND AN AQUEOUS ALKALINE ELECTROLYTE WHICH IS CAPABLE OF PRODUCING ANODIC OXIDATION, SUBJECTING SAID WIRE AS ANODE DURING SUCH TRAVEL TO SUCCESSIVE PULSES OF UNIDIRECTIONAL VOLTAGE, THE VOLTAGE DURING EACH PULSE PASSING FROM A LOW VALUE AT WHICH OXIDATION WILL BE INITIATED TO A HIGHER VALUE AT WHICH OXIDATION WIL BE AUGMENTED, PROVIDING A MOMENTARY SHIELD CIRCUITING OF SAID ANODE AND SAID CATHODE BETWEEN SAID SUCCESSIVE PULSES, AND SO TIMING THE STARTING AND DURATION OF SAID PULSES WITH RESPECT TO THE RATE OF TRAVEL OF SAID WIRE THAT CONSECUTIVE LENGTHS OF WIRE ARE OXIDIZED IN UNBROKEN CONTINUITY.
Claim 2
Independent Claim
117 words
THE METHOD OF OXIDIZING COPPER WIRE WHICH COMPRISES CAUSING SAID WIRE TO TRAVEL THROUGH AN ELECTROLYTIC CELL HAVING A CATHODE AND AN AQUEOUS ALKALINE ELECTROLYTE WHICH IS CAPABLE OF PRODUCING ANODIC OXIDATION, SUBJECTING SAID WIRE AS ANODE DURING SUCH TRAVEL TO SUCCESSIVE PULSES OF UNIDIRECTIONAL VOLTAGE, THE VOLTAGE DURING EACH PULSE PASSING FROM A LOW VALUE AT WHICH OXIDATION WILL BE INITIATED TO A HIGHER VALUE AT WHICH OXIDATION WIL BE AUGMENTED, PROVIDING A MOMENTARY SHIELD CIRCUITING OF SAID ANODE AND SAID CATHODE BETWEEN SAID SUCCESSIVE PULSES, AND SO TIMING THE STARTING AND DURATION OF SAID PULSES WITH RESPECT TO THE RATE OF TRAVEL OF SAID WIRE THAT CONSECUTIVE LENGTHS OF WIRE ARE OXIDIZED IN UNBROKEN CONTINUITY.
Claim 3
Dependent Claim
165 words
IN AN APPARATUS FOR PRODUCING A FILM OF OXIDE ON COPPER CONTAINING WIRE OF EXTENSIVE LENGTH INCLUDING AN ELECTROLYTIC CELL HAVING A CATHODE AND AN AQUEOUS ALKALINE ELECTROLYTE THEREIN, THE COMBINATION COMPRISING GUIDE MEANS FOR CAUSING WIRE TO BE OXIDIZED TO TRAVEL THROUGH SAID CELL IN CONTACT WITH SAID ELECTROLYTE, A SORUCE OF VOLTAGE CONNECTED TO SAID WIRE AND SAID CATHODE, ELECTRICAL SWITCHING MEANS FOR IMPRESSING BETWEEN LENGTHS OF SAID WIRE FUNCTIONING AS ANODE AND THE CATHODE OF SAID CELL SUCCESSIVE VOLTAGE PULSES HAVING AN INITIAL VOLTAGE ADAPTED TO START ANODIC OXIDATION AND A SUCCEEDING HIGHER VOLTAGE ADAPTED TO AUGMENT OXIDATION, SAID SWICHING MEANS INCLUDING A FIRST SWITCH, MEANS FOR MOMENTARILY SHORT-CIRCUITING SAID ANODE AND SAID CATHODE BETWEEN SAID SUCCESSIVE PULSES, AND A SECOND SWITCH FOR INTERRUPTING AND RESTORING ANODIZING CURRENT FLOW AND A CAM DRIVEN BY SAID GUIDE MEANS TO OPERATE SAID SWITCHES IN RESPONSE TO A PREDETERMINED RATE OF TRAVEL OF SAID WIRE WHEREBY SUCCESSIVE LENGTHS OF WIRE ARE OXIDIZED IN UNBROKEN SUCCESSION.
Claim 4
Dependent Claim
165 words
IN AN APPARATUS FOR PRODUCING A FILM OF OXIDE ON COPPER CONTAINING WIRE OF EXTENSIVE LENGTH INCLUDING AN ELECTROLYTIC CELL HAVING A CATHODE AND AN AQUEOUS ALKALINE ELECTROLYTE THEREIN, THE COMBINATION COMPRISING GUIDE MEANS FOR CAUSING WIRE TO BE OXIDIZED TO TRAVEL THROUGH SAID CELL IN CONTACT WITH SAID ELECTROLYTE, A SORUCE OF VOLTAGE CONNECTED TO SAID WIRE AND SAID CATHODE, ELECTRICAL SWITCHING MEANS FOR IMPRESSING BETWEEN LENGTHS OF SAID WIRE FUNCTIONING AS ANODE AND THE CATHODE OF SAID CELL SUCCESSIVE VOLTAGE PULSES HAVING AN INITIAL VOLTAGE ADAPTED TO START ANODIC OXIDATION AND A SUCCEEDING HIGHER VOLTAGE ADAPTED TO AUGMENT OXIDATION, SAID SWICHING MEANS INCLUDING A FIRST SWITCH, MEANS FOR MOMENTARILY SHORT-CIRCUITING SAID ANODE AND SAID CATHODE BETWEEN SAID SUCCESSIVE PULSES, AND A SECOND SWITCH FOR INTERRUPTING AND RESTORING ANODIZING CURRENT FLOW AND A CAM DRIVEN BY SAID GUIDE MEANS TO OPERATE SAID SWITCHES IN RESPONSE TO A PREDETERMINED RATE OF TRAVEL OF SAID WIRE WHEREBY SUCCESSIVE LENGTHS OF WIRE ARE OXIDIZED IN UNBROKEN SUCCESSION.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |