US3280020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anodic polarization system
Assignee: ConocoPhillips Co
•
Filing: 1962-10-01
•
Granted: 1966-10-18
•
Expires: 1982-10-01
Abstract
No abstract record available.
Inventors
- 👤 Norman L Conger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:35
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A SYSTEM FOR ANODICALLY PASSIVATING A VESSEL CONTAINING AN ELECTROLYTIC CORROSIVE SOLUTION AND SUBJECT TO FREQUENT CHANGES IN CORROSION RATE, COMPRISING: AN ELECTRODE IMMERSED IN THE SOLUTION; A RECTIFIER HAVING ITS NEGATIVE OUTPUT TERMINAL CONNECTED TO THE ELECTRODE AND ITS POSITIVE OUTPUT TERMINAL CONNECTED TO THE VESSEL TO AMKE THE ELECTRODE A CATHODE AND THE VESSEL AN ANODE; AN A.C. SOURCE; A SATURABLE CORE REACTOR HAVING AN A.C. WINDING CONNECTED IN SERIES WITH THE A.C. SOURCE AND THE RECTIFIER AND HAVING A CONTROL WINDING; A REFERENCE ELECTRODE ELECTRICALLY COMMUNICATING WITH THE SOLUTION; AN "ON" AND "OFF" TYPE CONTROLLER ACROSS THE VESSEL AND THE REFERENCE ELECTRODE TO MONITOR THE POTENTIAL BETWEEN THE REFERENCE ELECTRODE AND THE VESSEL, SAID CONTROLLER HAVING AN INPUT IMPENDANCE SUBSTANTIALLY GREATER THAN THE INTERNAL IMPEDANCE OF THE REFERENCE ELECTRODE; A D.C. SOURCE CONNECTED IN SERIES WITH THE CONTROL WINDING OF THE REACTOR; AND
Claim 2
Independent Claim
146 words
A SYSTEM FOR ANODICALLY PASSIVATING A VESSEL CONTAINING AN ELECTROLYTIC CORROSIVE SOLUTION AND SUBJECT TO FREQUENT CHANGES IN CORROSION RATE, COMPRISING: AN ELECTRODE IMMERSED IN THE SOLUTION; A RECTIFIER HAVING ITS NEGATIVE OUTPUT TERMINAL CONNECTED TO THE ELECTRODE AND ITS POSITIVE OUTPUT TERMINAL CONNECTED TO THE VESSEL TO AMKE THE ELECTRODE A CATHODE AND THE VESSEL AN ANODE; AN A.C. SOURCE; A SATURABLE CORE REACTOR HAVING AN A.C. WINDING CONNECTED IN SERIES WITH THE A.C. SOURCE AND THE RECTIFIER AND HAVING A CONTROL WINDING; A REFERENCE ELECTRODE ELECTRICALLY COMMUNICATING WITH THE SOLUTION; AN "ON" AND "OFF" TYPE CONTROLLER ACROSS THE VESSEL AND THE REFERENCE ELECTRODE TO MONITOR THE POTENTIAL BETWEEN THE REFERENCE ELECTRODE AND THE VESSEL, SAID CONTROLLER HAVING AN INPUT IMPENDANCE SUBSTANTIALLY GREATER THAN THE INTERNAL IMPEDANCE OF THE REFERENCE ELECTRODE; A D.C. SOURCE CONNECTED IN SERIES WITH THE CONTROL WINDING OF THE REACTOR; AND
References Cited (Backward Citations)
US3009865A
Cited
US3004905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |