Patent US4072512A successfully refreshed from Google Patents.
US4072512A
Expired / Lapsed
US
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Charge for manufacturing aluminium-silicon alloys
Assignee: Individual
•
Filing: 1976-06-01
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Granted: 1978-02-07
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Expires: 1996-06-01
Abstract
Abstract A charge comprising a silica-alumina material and a carbonaceous reducing agent which comprises a mixture of petroleum coke and carbon black.
Inventors
- 👤 Jury I. Brusako
- 👤 Sergei A. Rzhavin
- 👤 Vasily P. Kiselev
- 👤 Mikhail S. Tarasov
- 👤 Vladimir M. Rapoport
- 👤 Vladimir V. Timofeev
- 👤 Raisa I. Ragulina
- 👤 Miro K. Alivoivodich
- 👤 Anatoly G. Kucherenko
- 👤 Anatoly M. Varjushenkov
- 👤 Elena P. Isaeva
- 👤 Ivan A. Berezhnoi
- 👤 Vasily P. Rumyantsev
- 👤 Grigory S. Shpak
- 👤 Dmitry S. Guz
- 👤 Dmitry V. Ilinkov
- 👤 Pavel I. Volpin
- 👤 Mikhail P. Avdeev
- 👤 Stanislav A. Artemenko
- 👤 Ljudmila P. Khrennikova
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:54
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/02; C22B; C22B21/00; C22B21/0007
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
47 words
A charge for manufacturing aluminium-silicon alloys, comprising a silica-alumina material and a carbonaceous reducing agent which comprises a mixture of petroleum coke and carbon black, the ratio of petroleum coke to carbon black, as referred to non-volatile carbon content in the charge, ranges from 3.0:1 to 0.5:1.
Claim 2
Dependent Claim
47 words
A charge for manufacturing aluminium-silicon alloys, comprising a silica-alumina material and a carbonaceous reducing agent which comprises a mixture of petroleum coke and carbon black, the ratio of petroleum coke to carbon black, as referred to non-volatile carbon content in the charge, ranges from 3.0:1 to 0.5:1.
Claim 3
Dependent Claim
23 words
The charge according to claim 1, further comprising alcohol-sulphite lye based on cations selected from the group consisting of sodium, magnesium, and ammonium.
Claim 4
Dependent Claim
27 words
The charge according to claim 1, further comprising chlorides of alkali and alkaline-earth metals in an amount of up to 3% by total weight of the charge.
Claim 5
Dependent Claim
27 words
The charge according to claim 1, further comprising fluorides of alkali and alkaline-earth metals in an amount of up to 3% by total weight of the charge.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |