US3219442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloy steels and articles thereof
Assignee: Vasco Metals Corp
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Filing: 1964-10-30
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Granted: 1965-11-23
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Expires: 1984-10-30
Abstract
No abstract record available.
Inventors
- 👤 Harry G Johnstin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:14
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
AN ALLOY STEEL CONSISTING ESSENTIALLY OF THE FOLLOWING IN PERCENT BY WEIGHT: CARBON, 0.80-1.30%; SILICON, 0.12.00%; MAGANESE, 0.10-2.00%; CHROMIUM, 6.0010.00%; VANADIUM, 2.00-2.84%; MOLYBDENUM, 1.003.90%; NICKEL, 0-0.50%; PHOSPHORUS, 0-0.70%; AND SULFUR, 0-0.70% WHITH THE REMAINDER BEING SUBSTANTIALLY ALL IRON.
Claim 2
Dependent Claim
38 words
AN ALLOY STEEL CONSISTING ESSENTIALLY OF THE FOLLOWING IN PERCENT BY WEIGHT: CARBON, 0.80-1.30%; SILICON, 0.12.00%; MAGANESE, 0.10-2.00%; CHROMIUM, 6.0010.00%; VANADIUM, 2.00-2.84%; MOLYBDENUM, 1.003.90%; NICKEL, 0-0.50%; PHOSPHORUS, 0-0.70%; AND SULFUR, 0-0.70% WHITH THE REMAINDER BEING SUBSTANTIALLY ALL IRON.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |