US3984238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel for metal cord
Assignee: Individual
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Filing: 1975-05-14
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Granted: 1976-10-05
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Expires: 1995-05-14
Abstract
Abstract Steel comprising (in weight percent) carbon (0.65-0.85), silicon (0.2-0.37), manganese (0.3-0.7), cobalt and calcium, each in the amount of 0.001-0.05 weight percent the remainder being iron.
Inventors
- 👤 Nikolai Nikiforovich Vlasov
- 👤 Viktor Andreevich Golomazov
- 👤 Nikolai Fedorovich Dubrov
- 👤 Leonid Petrovich Zharkov
- 👤 Vladimir Alexandrovich Karavai
- 👤 Vitaly Kuzmich Likhov
- 👤 Ivan Nikolaevich Petukhov
- 👤 Kuart Mikhailovich Petrov
- 👤 Leonid Dmitrievich Rolschikov
- 👤 Alexei Ivanovich Saveliev
- 👤 Nikolai Vasilievich Sokolov
- 👤 Mikhail Petrovich Khlestkin
- 👤 Karl Borisovich Khusnoyarov, deceased
- 👤 administratrix by Evdokia Mikhailovna Lenkova
- 👤 administratrix by Nina Karlovna Lenkova
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:00
CPC Classifications
D; D07; D07B; D07B1/00; D07B1/06; D07B1/0606; D07B1/066; C; C22; C22C; C22C38/00; C22C38/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
38 words
Steel for metal cord, treated in the ladle with a slag-forming mixture and inert gas, consisting essentially of the following elements in weight percent: C 0.65-0.85, si 0.20-0.37, Mn 0.30-0.70, Co 0.001-0.005, Ca 0.001-0.005, the balance being Fe.
Claim 2
Dependent Claim
38 words
Steel for metal cord, treated in the ladle with a slag-forming mixture and inert gas, consisting essentially of the following elements in weight percent: C 0.65-0.85, si 0.20-0.37, Mn 0.30-0.70, Co 0.001-0.005, Ca 0.001-0.005, the balance being Fe.
Claim 3
Dependent Claim
43 words
The steel as claimed in claim 1 further containing in weight percent: P up to 0.015, S up to 0.015, Cr up to 0.05, Ni up to 0.05, Cu up to 0.05, O 2 up to 0.0035, and N 2 up to 0.0035.
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) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |