Patent US2537830A successfully refreshed from Google Patents.
US2537830A
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Self-agitating metallurgical salt bath
Assignee: Individual
•
Filing: 1944-09-14
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Granted: 1951-01-09
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Expires: 1964-09-14
Abstract
No abstract record available.
Inventors
- 👤 Artemas F Holden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:27
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/56; C21D1/607
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A METALLURGICAL SALT BATH CONSISTING ESSENTIALLY TO ZINC CHLORIDE 60% TO 80% OF THE SALTS OF THE BATH TOGETHER WITH ALKALI METAL CHLORIDE, ALKALI METAL FLUORIDE, AND SUFFICIENT WATER TO CAUSE EBULLITION WHEN AN OBJECT HOTTER THAN THE BATH IS PLACED THEREIN, SAID BATH BEING OPERABLE BETWEEN TEMPERATURE RANGES OF 250* F. TO 650* F., THE AMOUNT OF WATER RETAINEABLE IN THE BATH AT 250* F. BEING SUBSTANTIALLY 30%, AND AT 650* F, BEING SUBSTANTIALLY 1/2 %, SAID PERCENTAGES BEING BY WEIGHT.
References Cited (Backward Citations)
US384935A
Cited
US1140568A
Cited
US1532663A
Cited
US1984369A
Cited
US2172933A
Cited
US2263489A
Cited
US2328932A
Cited
US2400511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |