US2746134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplex metal sheet or article
Assignee: Commonwealth Engineering Company of Ohio
•
Filing: 1953-05-22
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Granted: 1956-05-22
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Expires: 1973-05-22
Abstract
No abstract record available.
Inventors
- 👤 Folsom E Drummond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:47
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/937; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12069; Y10T428/12076; Y10T428/12493; Y10T428/12729; Y10T428/12771; Y10T428/12785; Y10T428/12806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A CORROSION RESISTANT DUPLEX METAL ARTICLE COMPRISING A CORE OF MAGNESIUM METAL AND A BONDING LAYER THEREOVER OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZINC, CADMIUM AND ALLOYS THEREOF, AND A LAYER OF METAL OVER SAID BONDING LAYER OF METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM.
Claim 2
Dependent Claim
51 words
A CORROSION RESISTANT DUPLEX METAL ARTICLE COMPRISING A CORE OF MAGNESIUM METAL AND A BONDING LAYER THEREOVER OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZINC, CADMIUM AND ALLOYS THEREOF, AND A LAYER OF METAL OVER SAID BONDING LAYER OF METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM.
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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) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |