Patent US3137566A successfully refreshed from Google Patents.
US3137566A
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Method of pouring cast iron
Assignee: Kolsch-Folzer Werke AG
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Filing: 1961-07-31
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Granted: 1964-06-16
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Thieme Jochem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:12
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/10; C21C1/00; C21C1/08; C21C1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
IN A METHOD OF CASTING IRON, THE STEPS OF: PASSING THE CAST IRON MELT THROUGH A VACUUM, AND SUBSEQUENTLY ENRICHING SAID MELT WITH OXYGEN.
Claim 2
Dependent Claim
24 words
IN A METHOD OF CASTING IRON, THE STEPS OF: PASSING THE CAST IRON MELT THROUGH A VACUUM, AND SUBSEQUENTLY ENRICHING SAID MELT WITH OXYGEN.
References Cited (Backward Citations)
US2734240A
Cited
US2182064A
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US2253421A
Cited
US2587793A
Cited
FR1196042A
Cited
GB852424A
Cited
US2993780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |