US3681118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing excess molten metal coatings by employing low pressure gas streams
Assignee: Hitachi Ltd
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Filing: 1970-02-26
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Granted: 1972-08-01
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Expires: 1990-02-26
Abstract
Abstract A METHOD AND APPARATUS FOR CONTINUOUS HOT DIP METAL COATING OF A METAL STRIP WITHOUT USING COATING ROLLS, WHEREIN GAS UNDER PRESSURE IS DIRECTED ONTO OPPOSITE FACES OF THE METAL STRIP DURING ITS CONTINUOUS UPWARD MOVEMENT OUT OF A MOLTEN COATING METAL BATH. THE PRESSURIZED GAS BLOWS AWAY ANY EXCESS COATED METAL WHILE THE COATING IS STILL IN ITS NON-SOLIDIFIED STATE.
Inventors
- 👤 Tsuyoshi Ohama
- 👤 Tetsuji Iwasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:25
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/14; C23C2/16; C23C2/18; C23C2/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |