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Patent US2837422A successfully refreshed from Google Patents.
US2837422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Addition agents for the treatment of molten cast iron
Assignee: GEA Group AG
•
Filing: 1956-08-15
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Granted: 1958-06-03
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Expires: 1976-08-15
Abstract
No abstract record available.
Inventors
- 👤 Motz Jurgen
- 👤 Kuchler Heinz
- 👤 Figge Kurt
- 👤 Kaess Franz
- 👤 Muhlberger Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:53
CPC Classifications
C; C22; C22C; C22C35/00; C22C28/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
AS A NEW ARTICLE OF MANUFACTURE, AN IMPROVED ADDITION AGENT FOR TREATING MOLTEN CAST IRON CONTAINING THE FOLLOWING:
Claim 2
Dependent Claim
18 words
AS A NEW ARTICLE OF MANUFACTURE, AN IMPROVED ADDITION AGENT FOR TREATING MOLTEN CAST IRON CONTAINING THE FOLLOWING:
References Cited (Backward Citations)
GB730712A
Cited
US2762705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |