Patent US2661329A successfully refreshed from Google Patents.
US2661329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating electroplated magnesium castings
Assignee: Dow Chemical Co
•
Filing: 1951-04-13
•
Granted: 1953-12-01
•
Expires: 1971-04-13
Abstract
No abstract record available.
Inventors
- 👤 Long Herbert K De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:11
CPC Classifications
C; C23; C23C; C23C26/00; C25; C25D; C25D5/00; C25D5/48; C25D5/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN A METHOD OF TREATING A CASTING OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM AND THE MAGNESIUM BASE ALLOYS, SAID CASTING HAVING AN ELECTROPLATED METALLIC COATING THEREON, SO AS TO PREVENT BLISTERING OF THE COATING WHEN THE TEMPERATURE OF THE CASTING IS RAISED ABOVE ABOUT 450* F., THE STEP WHICH CONSISTS IN SUBJECTING THE ELECTROPLATED CASTING TO A HEATING FOR 4 TO 16 HOURS AT A TEMPERATURE BETWEEN 250* F. AND 450* F.
Claim 2
Dependent Claim
76 words
IN A METHOD OF TREATING A CASTING OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM AND THE MAGNESIUM BASE ALLOYS, SAID CASTING HAVING AN ELECTROPLATED METALLIC COATING THEREON, SO AS TO PREVENT BLISTERING OF THE COATING WHEN THE TEMPERATURE OF THE CASTING IS RAISED ABOVE ABOUT 450* F., THE STEP WHICH CONSISTS IN SUBJECTING THE ELECTROPLATED CASTING TO A HEATING FOR 4 TO 16 HOURS AT A TEMPERATURE BETWEEN 250* F. AND 450* F.
References Cited (Backward Citations)
US2219738A
Cited
US2437612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |