US3548845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling apparatus for molds
Assignee: Nippon Steel Corp
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Filing: 1968-09-16
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Granted: 1970-12-22
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Expires: 1988-09-16
Abstract
Abstract A method of water-cooling molds for casting steel ingots in which the molds are air-cooled in a cooling pit until their surface temperature is between about 500 DEG C. and about 300 DEG C., and then water-cooled by jetting cooling water onto the molds.
Inventors
- 👤 Hideo Ogi
- 👤 Haruo Ozaki
- 👤 Masaru Mishiro
- 👤 Yoshikazu Horikawa
- 👤 Shunji Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:22
CPC Classifications
B; B22; B22D; B22D27/00; B22D27/04
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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |