Patent US5400778A successfully refreshed from Google Patents.
Patent US2764805A successfully refreshed from Google Patents.
US2764805A
Expired / Lapsed
US
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Duplex metal article
Assignee: United States Steel Corp
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Filing: 1952-02-13
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Granted: 1956-10-02
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Expires: 1972-02-13
Abstract
No abstract record available.
Inventors
- 👤 Robert B Mears
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:42
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/22; B23K20/227; B32; B32B; B32B15/00; B32B15/01; B32B15/011; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/933; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12958; Y10T428/12965
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN MANUFACTURES OF THE CLASS DESCRIBED, LAMINATED STRUCTURES COMPOSED OF LAYERS OF STAINLESS STEEL, WHICH MANUFACTURES ARE HIGHLY RESISTANT TO PERFORATION AND STRESS CORROSION CRACKING WHEN EXPOSED TO HALOGEN SALT CONTAINING SOLUTIONS AND COMPRISE A BASE LAYER OF STAINLESS STEEL CONTAINING BETWEEN 16 AND 30% CHROMIUM AND A FACING LAYER OF STAINLESS STEEL BONDED THERETO AND ADAPTED TO BE DIRECTLY EXPOSED TO THE HALOGEN SALT CONTAINING SOLUTION, SAID FACING LAYER CONTAINING ABOUT 12% CHROMIUM AND HAVING A SOLUTION POTENTIAL AT LEAST 0.1 VOLT MORE, ANODIC THAN THE BASE LAYER WHEN IMMERSED IN THE HALOGEN SALT CONTAINING SOLUTION.
Claim 2
Dependent Claim
97 words
IN MANUFACTURES OF THE CLASS DESCRIBED, LAMINATED STRUCTURES COMPOSED OF LAYERS OF STAINLESS STEEL, WHICH MANUFACTURES ARE HIGHLY RESISTANT TO PERFORATION AND STRESS CORROSION CRACKING WHEN EXPOSED TO HALOGEN SALT CONTAINING SOLUTIONS AND COMPRISE A BASE LAYER OF STAINLESS STEEL CONTAINING BETWEEN 16 AND 30% CHROMIUM AND A FACING LAYER OF STAINLESS STEEL BONDED THERETO AND ADAPTED TO BE DIRECTLY EXPOSED TO THE HALOGEN SALT CONTAINING SOLUTION, SAID FACING LAYER CONTAINING ABOUT 12% CHROMIUM AND HAVING A SOLUTION POTENTIAL AT LEAST 0.1 VOLT MORE, ANODIC THAN THE BASE LAYER WHEN IMMERSED IN THE HALOGEN SALT CONTAINING SOLUTION.
References Cited (Backward Citations)
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Cited
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US1929655A
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Cited
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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) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |