Patent US3128175A successfully refreshed from Google Patents.
US3128175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low alloy, high hardness, temper resistant steel
Assignee: Universal Cyclops Steel Corp
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Filing: 1960-07-15
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Granted: 1964-04-07
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Expires: 1980-07-15
Abstract
No abstract record available.
Inventors
- 👤 Nagy Alexander
- 👤 Louis W Lherbier
- 👤 Altieri Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:27
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A LOW ALLOY CONTENT, HIGH HARDNESS, TEMPER RESISTANT STEEL HAVING A COMPOSITION CONSISTING ESSENTIALLY, BY WEIGHT, OF 0.30 TO 0.40 PERCENT OF CARBON, 0.20 TO 1 PERCENT OF MANGANESE, 0.50 TO 1.50 PERCENT OF SILICON, 3 TO 4 PERCENT OF CHROMIUM, 2.5 TO 3.5 PERCENT OF MOLYBDENUM, 0.50 TO 1 PERCENT OF VANADIUM, 1.50 TO 2.50 PERCENT OF COBALT AND THE REMAINDER IRON AND INCIDENTAL IMPURITIES THAT DO NOT DELETERIOUSLY AFFECT THE PRODUCT.
Claim 2
Dependent Claim
73 words
A LOW ALLOY CONTENT, HIGH HARDNESS, TEMPER RESISTANT STEEL HAVING A COMPOSITION CONSISTING ESSENTIALLY, BY WEIGHT, OF 0.30 TO 0.40 PERCENT OF CARBON, 0.20 TO 1 PERCENT OF MANGANESE, 0.50 TO 1.50 PERCENT OF SILICON, 3 TO 4 PERCENT OF CHROMIUM, 2.5 TO 3.5 PERCENT OF MOLYBDENUM, 0.50 TO 1 PERCENT OF VANADIUM, 1.50 TO 2.50 PERCENT OF COBALT AND THE REMAINDER IRON AND INCIDENTAL IMPURITIES THAT DO NOT DELETERIOUSLY AFFECT THE PRODUCT.
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |