US3227644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Galvanic anode and method of treating the same
Assignee: Alcoa Corp
•
Filing: 1961-10-05
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Granted: 1966-01-04
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Expires: 1981-10-05
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Rutemiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:20
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/10; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/12; C23F13/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A GALVANIC ANODE COMPOSED OF AN ALUMINUM BASE ALLOY CONSISTING ESSENTIALLY OF ALUMINUM, FROM 3.5% TO 9.0% OF ZINC AND AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF FROM 0.05% TO 0.20% TIN AND FROM 0.008% TO 0.05% INDIUM, THE TOTAL OF ALL IMPURITIES NOT BEING OVER 0.50%, SAID ANODE HAVING A HOMOGENEOUS INTERNAL STRUCTURE RESULTING FROM A SOLUTION HEAT TREATMENT AND RAPID COOLING AND CHARACTERIZED BY A HIGHER CURRENT EFFICIENCY THAN THE SAME ANODE PRIOR TO SUCH SOLUTION HEAT TREATMENT.
Claim 2
Dependent Claim
83 words
A GALVANIC ANODE COMPOSED OF AN ALUMINUM BASE ALLOY CONSISTING ESSENTIALLY OF ALUMINUM, FROM 3.5% TO 9.0% OF ZINC AND AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF FROM 0.05% TO 0.20% TIN AND FROM 0.008% TO 0.05% INDIUM, THE TOTAL OF ALL IMPURITIES NOT BEING OVER 0.50%, SAID ANODE HAVING A HOMOGENEOUS INTERNAL STRUCTURE RESULTING FROM A SOLUTION HEAT TREATMENT AND RAPID COOLING AND CHARACTERIZED BY A HIGHER CURRENT EFFICIENCY THAN THE SAME ANODE PRIOR TO SUCH SOLUTION HEAT TREATMENT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |