Patent US1070313A successfully refreshed from Google Patents.
US3024176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant coating
Assignee: General Electric Co
•
Filing: 1959-08-04
•
Granted: 1962-03-06
•
Expires: 1979-08-04
Abstract
No abstract record available.
Inventors
- 👤 Newell C Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:00
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/02; C01B35/04; C25; C25D; C25D9/00; C25D9/04; C25D9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A METHOD OF FORMING A BORIDE COATING ON A METAL COMPOSITION HAVING A MELTING POINT OF AT LEAST 600*C. AT LEAST 50 MOL PERCENT OF SAID METAL COMPOSITION BEING AT LEAST ONE OF THE METALS SELECTED FROM THE GROUP OF METALS WHOSE ATOMIC NUMBERS ARE 23-29, 41-47, AND 73-79, SAID METHOD COMPRISING (1) FORMING AN ELECTRIC CELL CONTAINING SAID METAL COMPOSITION AS THE CATHODE JOINED THROUGH AN EXTERNAL ELECTRICAL CIRCUIT TO A BORON ANODE AND A FUSED SALT ELECTROLYTE COMPOSED ESSENTIALLY OF AT LEAST ONE ALKALI METAL FLUORIDE AND FROM 0.5 TO 50 MOL PERCENT OF AT LEAST ONE ALKALI METAL FLUOROBORATE, SAID ELECTROLYTE BEING MAINTAINED AT A TEMPERATURE OF ABOTU 600-800*C. BUT BELOW THE MELTING POINT OF SAID METAL COMPOSITION IN THE SUBSTANTIAL ABSENCE OF OXYGEN, (2) CONTROLLING THE CURRENT FLOWING IN SAID ELECTRIC CELL SO THAT THE CURRENT DENSITY AT THE CATHODE DOES NOT EXCEED 3 AMPERES PER SQUARE DECIMETER DURING THE FORMATION OF THE BORIDE COATING AND (3) INTERUPTING THE FLOW OF ELECTRICAL CURRENT AFTER THE DESIRED THICKNESS OF BORIDE COATING IS FORMED ON THE METAL COMPOSITION.
Claim 2
Independent Claim
180 words
A METHOD OF FORMING A BORIDE COATING ON A METAL COMPOSITION HAVING A MELTING POINT OF AT LEAST 600*C. AT LEAST 50 MOL PERCENT OF SAID METAL COMPOSITION BEING AT LEAST ONE OF THE METALS SELECTED FROM THE GROUP OF METALS WHOSE ATOMIC NUMBERS ARE 23-29, 41-47, AND 73-79, SAID METHOD COMPRISING (1) FORMING AN ELECTRIC CELL CONTAINING SAID METAL COMPOSITION AS THE CATHODE JOINED THROUGH AN EXTERNAL ELECTRICAL CIRCUIT TO A BORON ANODE AND A FUSED SALT ELECTROLYTE COMPOSED ESSENTIALLY OF AT LEAST ONE ALKALI METAL FLUORIDE AND FROM 0.5 TO 50 MOL PERCENT OF AT LEAST ONE ALKALI METAL FLUOROBORATE, SAID ELECTROLYTE BEING MAINTAINED AT A TEMPERATURE OF ABOTU 600-800*C. BUT BELOW THE MELTING POINT OF SAID METAL COMPOSITION IN THE SUBSTANTIAL ABSENCE OF OXYGEN, (2) CONTROLLING THE CURRENT FLOWING IN SAID ELECTRIC CELL SO THAT THE CURRENT DENSITY AT THE CATHODE DOES NOT EXCEED 3 AMPERES PER SQUARE DECIMETER DURING THE FORMATION OF THE BORIDE COATING AND (3) INTERUPTING THE FLOW OF ELECTRICAL CURRENT AFTER THE DESIRED THICKNESS OF BORIDE COATING IS FORMED ON THE METAL COMPOSITION.
References Cited (Backward Citations)
US1801808A
Cited
US2033172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |