Patent US2645558A successfully refreshed from Google Patents.
US2645558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lining for centrifugal iron casting molds
Assignee: Individual
•
Filing: 1950-05-10
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Granted: 1953-07-14
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Expires: 1970-05-10
Abstract
No abstract record available.
Inventors
- 👤 Burchartz Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:55
CPC Classifications
B; B22; B22C; B22C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A METHOD OF PROTECTING THE INNER FACE OF CENTRIFUGAL CASTING MOLDS COMPRISING COVERTING INDIVIDUAL IRON CHIPS WITH THE SUSPENSION OF A PULVERTULENT INORGANIC REFRACTORY IN A LIQUID CARRIER, DRYING THE CHIPS TO FORM A COATING THEREON,
Claim 2
Independent Claim
36 words
A METHOD OF PROTECTING THE INNER FACE OF CENTRIFUGAL CASTING MOLDS COMPRISING COVERTING INDIVIDUAL IRON CHIPS WITH THE SUSPENSION OF A PULVERTULENT INORGANIC REFRACTORY IN A LIQUID CARRIER, DRYING THE CHIPS TO FORM A COATING THEREON,
References Cited (Backward Citations)
AT78488B
Cited
US1570969A
Cited
GB356686A
Cited
FR839903A
Cited
GB521279A
Cited
US2239530A
Cited
US2246063A
Cited
GB625775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |