Patent US3020216A successfully refreshed from Google Patents.
US3020216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for protection against electrolytic corrosion of vessel hulls and the like in fresh water
Assignee: Individual
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Filing: 1959-01-15
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Granted: 1962-02-06
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Expires: 1979-01-15
Abstract
No abstract record available.
Inventors
- 👤 Richard D Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:26
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/04; C23F13/06; C23F2213/00; C23F2213/30; C23F2213/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS FOR PREVENTING ELECTROLYSTIC CORROSION OF SUBMERGED METALLIC STRUCTURES IN MARINE FRESH WATERS WHICH COMPRISES CONNECTING THROUGH INSULATED ELECTRICAL CONDUITS THE METALLIC STRUCTURE AS A CATHODE IN AN EXTERNAL CIRCUIT WITH A METALLIC ZINC MATERIAL AS AN ANODE, POSITIONING SAID ANODE IN THE WATER UNDERNEATH THE CATHODE AND CONTROLLING THE CURRENT THROUGH SAID CIRCUIT AND THE WATER AS AN ELECTROLYTE AT A CURRENT OF ABOUT 0.0 5 TO 0.3 MILLIAMPERE CURRENT DENSITY PER SQUARE FOOT OF CATHODE SURFACE TO FORM A COATING ON THE CATHODE WHILE SUBSTANTIALLY ELIMINATING THE FORMATION OF ANY CALCAREOUS DEPOSITS.
Claim 2
Dependent Claim
95 words
A PROCESS FOR PREVENTING ELECTROLYSTIC CORROSION OF SUBMERGED METALLIC STRUCTURES IN MARINE FRESH WATERS WHICH COMPRISES CONNECTING THROUGH INSULATED ELECTRICAL CONDUITS THE METALLIC STRUCTURE AS A CATHODE IN AN EXTERNAL CIRCUIT WITH A METALLIC ZINC MATERIAL AS AN ANODE, POSITIONING SAID ANODE IN THE WATER UNDERNEATH THE CATHODE AND CONTROLLING THE CURRENT THROUGH SAID CIRCUIT AND THE WATER AS AN ELECTROLYTE AT A CURRENT OF ABOUT 0.0 5 TO 0.3 MILLIAMPERE CURRENT DENSITY PER SQUARE FOOT OF CATHODE SURFACE TO FORM A COATING ON THE CATHODE WHILE SUBSTANTIALLY ELIMINATING THE FORMATION OF ANY CALCAREOUS DEPOSITS.
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) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |