US3078531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additives for molten metals
Assignee: American Metallurgical Products Co
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Filing: 1960-10-05
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Granted: 1963-02-26
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Expires: 1980-10-05
Abstract
No abstract record available.
Inventors
- 👤 Wilbur T Bolkcom
- 👤 William E Knapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:33
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD OF TREATING METALS TO IMPROVE FLUIDITY AND REDUCE INCLUSIONS COMPARSING THE STEPS OF TEEMING THE MOLTEN METAL IN THE USUAL MANNER THROUGH THE ATMOSPHERE AND FREE FROM PREVIOUS INERT MANNER THROUGH THE ATMOSPHERE A MOLD OPEN TO THE ATMOSPHERE AND FREE OF INERT GAS COVER THROUGH A RESTRICTED OPENING IN THE MOLD AND ADDING TO THE METAL DURING TEEMING IN THE MOLD ABOUT 1/2 OZ. TO ABOUT 8 OZ. OF SOLID POLYTETRAFLUORETHYLENE PER TON OF METAL.
Claim 2
Independent Claim
78 words
A METHOD OF TREATING METALS TO IMPROVE FLUIDITY AND REDUCE INCLUSIONS COMPARSING THE STEPS OF TEEMING THE MOLTEN METAL IN THE USUAL MANNER THROUGH THE ATMOSPHERE AND FREE FROM PREVIOUS INERT MANNER THROUGH THE ATMOSPHERE A MOLD OPEN TO THE ATMOSPHERE AND FREE OF INERT GAS COVER THROUGH A RESTRICTED OPENING IN THE MOLD AND ADDING TO THE METAL DURING TEEMING IN THE MOLD ABOUT 1/2 OZ. TO ABOUT 8 OZ. OF SOLID POLYTETRAFLUORETHYLENE PER TON OF METAL.
References Cited (Backward Citations)
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US963973A
Cited
GB345047A
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US1998467A
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US2056234A
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AT168831B
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GB603213A
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US2770860A
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GB803493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |