Patent US2898251A successfully refreshed from Google Patents.
US2898251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum coated steel article and method of producing it
Assignee: Jones and Laughlin Steel Corp
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Filing: 1956-11-19
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Granted: 1959-08-04
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Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 Richard W Treder
- 👤 Batz Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:49
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/04; C23C2/12; B; B32; B32B; B32B15/00; B32B15/01; B32B15/012; C23C8/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12576
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
40 words
A BIMETALLIC ARTICLE COMPRISING A LOW CARBON STEEL BASE, A THIN CARBURIZED SURFACE LAYER ON SAID BASE OF A DEPTH MICROSCOPICALLY IDENTIFIABLE AT A MAGNIFICATION OF 500 DIAMETERS, AND A COATING OF ALUMINUM TIGHTLY BONDED TO THE CARBURIZED SURFACE LAYER.
Claim 2
Dependent Claim
40 words
A BIMETALLIC ARTICLE COMPRISING A LOW CARBON STEEL BASE, A THIN CARBURIZED SURFACE LAYER ON SAID BASE OF A DEPTH MICROSCOPICALLY IDENTIFIABLE AT A MAGNIFICATION OF 500 DIAMETERS, AND A COATING OF ALUMINUM TIGHTLY BONDED TO THE CARBURIZED SURFACE LAYER.
Claim 3
Independent Claim
70 words
THE METHOD OF PRODUCING A DUCTILE BIMETALLIC ARTICLE HAVING A LOW CARBON STEEL BASE AND AN ALUMINUM COATING COMPRISING CARBURIZING THE SURFACE OF THE LOW CARBON STEEL BASE TO A DEPTH MICROSCOPICALLY IDENTIFIABLE AT A MAGNIFICATION OF 500 DIAMETERS AND THEN APPLYING THERETO AN ALUMINUM COATING, THE BIMETALLIC ARTICLE BEING HEATED AS AN INCIDENT TO THE COATING THEREOF TO A TEMPERATURE AT WHICH IRON AND ALUMINUM FORM A BRITTLE ALLOY.
Claim 4
Independent Claim
70 words
THE METHOD OF PRODUCING A DUCTILE BIMETALLIC ARTICLE HAVING A LOW CARBON STEEL BASE AND AN ALUMINUM COATING COMPRISING CARBURIZING THE SURFACE OF THE LOW CARBON STEEL BASE TO A DEPTH MICROSCOPICALLY IDENTIFIABLE AT A MAGNIFICATION OF 500 DIAMETERS AND THEN APPLYING THERETO AN ALUMINUM COATING, THE BIMETALLIC ARTICLE BEING HEATED AS AN INCIDENT TO THE COATING THEREOF TO A TEMPERATURE AT WHICH IRON AND ALUMINUM FORM A BRITTLE ALLOY.
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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |