Patent US2824348A successfully refreshed from Google Patents.
US2824348A
Expired / Lapsed
US
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Method of casting metals
Assignee: Hawley Products Co
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Filing: 1954-03-18
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Granted: 1958-02-25
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Expires: 1974-03-18
Abstract
No abstract record available.
Inventors
- 👤 John C Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:23
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/10; B22D13/101; B22D13/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A METHOD OF CASTING METALS WHICH COMPRISES CASTING MOLTEN METALS AROUND A PREFORMED FIBROUS CORE COMPRISING A MAJOR PROPORTION OF HEAT RESISTANT, SUBSTANTIALLY NON-COMBUSTIBLE FIBROUS MATERIALS AND A MINOR PROPOR-
Claim 2
Independent Claim
30 words
A METHOD OF CASTING METALS WHICH COMPRISES CASTING MOLTEN METALS AROUND A PREFORMED FIBROUS CORE COMPRISING A MAJOR PROPORTION OF HEAT RESISTANT, SUBSTANTIALLY NON-COMBUSTIBLE FIBROUS MATERIALS AND A MINOR PROPOR-
References Cited (Backward Citations)
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US1281679A
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US1486631A
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US2162386A
Cited
CH200730A
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US2411557A
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US2633433A
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US2509599A
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US2688780A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |