US3022234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathodic protection of ships
Assignee: Engelhard Industries Inc
•
Filing: 1958-06-30
•
Granted: 1962-02-20
•
Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 Edward P Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:39
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
A METHOD FOR CATHODICALLY PROTECTING THE PROPELLER OF A SHIP FLOATING IN WATER WHICH COMPRISES GENERATING AN ELECTROMOTIVE FORCE, SUPPLYING THE ELECTROMOTIVE FORCE TO AN ANODE IMMERSED IN THE WATER AND TO THE PROPELLER AS THE CATHODE TO PRODUCE A POTENTIAL DIFFERENCE THEREBEWEEN AND ADJUSTING THE ELECTROMOTIVE FORCE AS A DIRECT FUNCTION OF THE ROTATION SPEED OF THE PROPELLER.
Claim 2
Independent Claim
59 words
A METHOD FOR CATHODICALLY PROTECTING THE PROPELLER OF A SHIP FLOATING IN WATER WHICH COMPRISES GENERATING AN ELECTROMOTIVE FORCE, SUPPLYING THE ELECTROMOTIVE FORCE TO AN ANODE IMMERSED IN THE WATER AND TO THE PROPELLER AS THE CATHODE TO PRODUCE A POTENTIAL DIFFERENCE THEREBEWEEN AND ADJUSTING THE ELECTROMOTIVE FORCE AS A DIRECT FUNCTION OF THE ROTATION SPEED OF THE PROPELLER.
Claim 3
Dependent Claim
61 words
IN AN IMPRESSED CURRENT CATHODIC PROTECTION SYSTEM, A METALLIC OBJECT IN CONTACT WITH AN ELECTROLYTE AND A POWER SOURCE FOR APPLYING A CURRENT THROUGH THE ELECTROLYTE TO SAID OBJECT AS A FUNCTION OT TWO VARYING CONDITIONS, MEANS FOR ADJUSTING THE CURRENT ACCORDING TO THE FIRST CONDITION, AND MEANS FOR MODIFYING THE ADJUSTED CURRENT AS A DIRECT FUNCTION OF THE SECOND CONDITION.
Claim 4
Dependent Claim
61 words
IN AN IMPRESSED CURRENT CATHODIC PROTECTION SYSTEM, A METALLIC OBJECT IN CONTACT WITH AN ELECTROLYTE AND A POWER SOURCE FOR APPLYING A CURRENT THROUGH THE ELECTROLYTE TO SAID OBJECT AS A FUNCTION OT TWO VARYING CONDITIONS, MEANS FOR ADJUSTING THE CURRENT ACCORDING TO THE FIRST CONDITION, AND MEANS FOR MODIFYING THE ADJUSTED CURRENT AS A DIRECT FUNCTION OF THE SECOND CONDITION.
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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |