US3685986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixture for protecting surface of metal in process of casting
Assignee: TSENTRALNY NAUCHNO-ISSLEDOVATELSKY INST CHERNOI
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Filing: 1970-03-17
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Granted: 1972-08-22
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Expires: 1990-03-17
Abstract
Abstract A MIXTURE FOR PROTECTION OF THE SURFACE OF A METAL DURING THE CASTING OF THIS METAL COMPRISING GRAPHITE IN THE AMOUNT OF 5 TO 90 PERCENT BY WEIGHT USED AS A HEATINSULATING MATERIAL AND CRYOLITE IN THE AMOUNT OF 5 TO 30 PERCENT BY WEIGHT USED AS A FLUX-FORMING MATERIAL AND TAKEN IN COMBINATION WITH A BORON-CONTAINING COMPOUND IN THE AMOUNT OF 2 TO 30 PERCENT BY WEIGHT.
Inventors
- 👤 Viktor Savelievich Rutes
- 👤 Vladimir Konstantinovic Petrov
- 👤 Aram Aristagesovich Terterian
- 👤 Mikhail Grigorievich Chigrinov
- 👤 Erik Rikhardovich Ballad
- 👤 Vladimir Borisovich Gankin
- 👤 Serafim Vasilievich Kolpakov
- 👤 Dmitry Petrovich Evteev
- 👤 Anatoly Ivanovich Manokhin
- 👤 Petr Sergeevich Klimashin
- 👤 Elena Pavlovna Matevosian
- 👤 Oleg Vasilievich Nosochenko
- 👤 Alexandr Sergeevich Lavrov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:14
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/006; B; B22; B22D; B22D11/00; B22D11/10; B22D11/11; B22D11/111
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |