US2676098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill rod steel and articles thereof
Assignee: Crucible Steel Company of America
•
Filing: 1951-04-06
•
Granted: 1954-04-20
•
Expires: 1971-04-06
Abstract
No abstract record available.
Inventors
- 👤 Payson Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:37
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
A DRILL ROD ALLOY STEEL OF SUBSTANTIALLY THE FOLLOWING COMPOSITION: 0.6 TO 0.8% MANGANESE; 0.5 TO 0.8% SILICON; 0.3 TO 0.5% NICKEL; 1.75 TO
Claim 2
Dependent Claim
24 words
A DRILL ROD ALLOY STEEL OF SUBSTANTIALLY THE FOLLOWING COMPOSITION: 0.6 TO 0.8% MANGANESE; 0.5 TO 0.8% SILICON; 0.3 TO 0.5% NICKEL; 1.75 TO
Claim 3
Dependent Claim
14 words
25% CHROMIUM; 0.25 TO 0.35% MOLYBDENUM; 0.25 TO 0.30 CARBON, AND THE BALANCE IRON.
Claim 4
Dependent Claim
14 words
25% CHROMIUM; 0.25 TO 0.35% MOLYBDENUM; 0.25 TO 0.30 CARBON, AND THE BALANCE IRON.
References Cited (Backward Citations)
US1464174A
Cited
GB344822A
Cited
US1987841A
Cited
US2059746A
Cited
US2104980A
Cited
US2519627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |