US3598575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating cast iron
Assignee: Pont a Mousson SA
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Filing: 1968-04-29
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Granted: 1971-08-10
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Expires: 1988-04-29
Abstract
Abstract A PROCESS FOR TREATING LIQUID IRON COMPRISING INTRODUCING AT LEAST ONE METALLIC INOCULATION PRODUCT, SUCH AS PURE MAGNESIUM, CERIUM, SODIUM, CALCIUM OR OTHER METAL OR METAL ALLOY, AT THE BOTTOM OF A BATH OF IRON BY MEANS OF AN IMMERSED BELL, WHEREIN SAID METALLIC INOCULATING PRODUCT IS INTRODUCED INTO THE BATH OF IRON IN THE FORM OF AT LEAST ONE PIECE OF SAID PRODUCT TOTALLY COVERED WITH A COATING OF REFRACTORY MATERIAL, A PART OF THE COATING BEING THINNER THAN THE REST OF THE COATING.
Inventors
- 👤 Henri Jarysta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:23
CPC Classifications
C; C21; C21C; C21C1/00; C21C1/10; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10T; Y10T428/00; Y10T428/12; Y10T428/12222; Y10T428/12389; Y10T428/12493; Y10T428/12639; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |