Patent US3230056A successfully refreshed from Google Patents.
US3230056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting steel ingots
Assignee: United States Steel Corp
•
Filing: 1959-03-24
•
Granted: 1966-01-18
•
Expires: 1979-03-24
Abstract
No abstract record available.
Inventors
- 👤 Norbert R Arant
- 👤 Michael A Orehoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:50
CPC Classifications
B; B22; B22C; B22C3/00; B22C23/00; B22C23/02; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12465; Y10T428/12493; Y10T428/12639; Y10T428/12646; Y10T428/12653
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A METHOD OF CASTING STEEL INGOTS WHICH COMPRISES APPLYING TO THE INTERNAL SURFACES OF A CAST-IRON MOLD A COATING OF A LIQUID DISPERSION CONTAINING SOLIDS IN PROPORTIONS BY WEIGHT COMPRISING DIATOMACEOUS EARTH 20%, GLUTRIN 5%, BALL CLAY 2%, BENTONITE 3% AND SILICA FLOUR 70%, DRYING SAID COATING TO PROVIDE AN INSULATING LINING ON SAID INTERNAL SURFACES, SAID COATINGBEING APPLIED IN AN AMOUNT SUCH THAT SAID LINING WHEN DRIED HAS A THICKNESS OF BETWEEN 0.020 INCH AND 0.250 INCH, AND THEN TEEMING MLTEN STEEL IN SAID MOLD.
Claim 2
Independent Claim
86 words
A METHOD OF CASTING STEEL INGOTS WHICH COMPRISES APPLYING TO THE INTERNAL SURFACES OF A CAST-IRON MOLD A COATING OF A LIQUID DISPERSION CONTAINING SOLIDS IN PROPORTIONS BY WEIGHT COMPRISING DIATOMACEOUS EARTH 20%, GLUTRIN 5%, BALL CLAY 2%, BENTONITE 3% AND SILICA FLOUR 70%, DRYING SAID COATING TO PROVIDE AN INSULATING LINING ON SAID INTERNAL SURFACES, SAID COATINGBEING APPLIED IN AN AMOUNT SUCH THAT SAID LINING WHEN DRIED HAS A THICKNESS OF BETWEEN 0.020 INCH AND 0.250 INCH, AND THEN TEEMING MLTEN STEEL IN SAID MOLD.
References Cited (Backward Citations)
US1982763A
Cited
US2018025A
Cited
GB522086A
Cited
US2234152A
Cited
US2399606A
Cited
US2544598A
Cited
US2623809A
Cited
US2882568A
Cited
US2951272A
Cited
US1662354A
Cited
US1764544A
Cited
US1722098A
Cited
US2028244A
Cited
US1961399A
Cited
US2031538A
Cited
US2005175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |