Patent US2699993A successfully refreshed from Google Patents.
US2699993A
Expired / Lapsed
US
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Welding rods for hard-facing
Assignee: Union Carbide Corp
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Filing: 1951-06-29
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Granted: 1955-01-18
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Expires: 1971-06-29
Abstract
No abstract record available.
Inventors
- 👤 Samuel G Macneill
- 👤 William J Lindner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:06
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A WELDING ROD FOR HARD-FACING COMPOSED OF AN ALLOY CONTAINING 12% TO 16% CHROMIUM; 12% TO 16% TUNGSTEN; 13% TO 17% COBALT; 2.5% TO 3.5% BORON; 0.6% TO 1% CARBON; UP TO 1% SILICON; UP TO 0.25% MANGANESE; UP TO 2% IRON; THE REMAINDER NICKLE AND INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
48 words
A WELDING ROD FOR HARD-FACING COMPOSED OF AN ALLOY CONTAINING 12% TO 16% CHROMIUM; 12% TO 16% TUNGSTEN; 13% TO 17% COBALT; 2.5% TO 3.5% BORON; 0.6% TO 1% CARBON; UP TO 1% SILICON; UP TO 0.25% MANGANESE; UP TO 2% IRON; THE REMAINDER NICKLE AND INCIDENTAL IMPURITIES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-17 | 1958-07-19 | 1959-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-17 | 1962-07-19 | 1963-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-17 | 1966-07-19 | 1967-01-18 | $7700.00 | Window Closed / Lapsed |