US2707323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing copper clad steel
Assignee: —
•
Filing: —
•
Granted: 1955-05-03
•
Expires: 1972-05-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:30
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/18; B32; B32B; B32B15/00; B32B15/01; B32B15/013; B32B15/015; C; C25; C25D; C25D7/00; C25D7/06; C25D7/0614
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
THE METHOD OF MANUFACTURING COOP-CLAD STEEL PLATES THAT INCLUDES THE BONDING OF ONE FACE OF AN OXYGENFREE COOPER PLATE AND A STEEL SLAB OR INGOT WHEREIN THE FORMER VARIES FROM 1/8" TO 1" IN THICKNESS AS THE LATTER VARIES FROM 2" TO 15" IN THICKNESS, WHICH METHOD COMPRISES ELECTRODEPOSITING A LAYER OF NICKEL ON ONE FACE OF SAID COOPER PLATE; SECURING THE COPPER PLATE TO A STEEL SLAB OR INGOT WITH THE NICKEL-PLATE SURFAE OF THE COPPER PLATE IN FACE-TO FACE CONTACT WITH THE STEEL SLAB OR INGOT; HEATING THE RESULTING COMPOSITE ASSEMBLY UNIFORMLY THROUGOUT TO A TEMPERATURE BETWEEN ABOUT 1550 AND ABOUT 1800* F., AND SUBJECTING THE HOT ASSEMBLY TO PRESSURE ROLLS TO REDUCE ITS THICKNESS TO BETWEEN ABOUT ONEFOURTH AND ABOUT ONE-TWENTY-FIFTH OF THE THICKNESS OF THE ORIGINAL ASSEMBLY, THE REDUCTION IN THICKNESS OF SAID COPPER-STEEL ASSEMBLY PER PASS THROUGH THE ROLLS BEING NO GREATER THAN ABOUT ONE-EIGHT OF AN INCH, AND, WHEN THE THICKNESS OF THE ASSEMBLY IS WITHIN ABOUT 10% OF THE DESIRED FINAL THICKNESS, THE REDUCTION IN THICKNESS OF SAID COPPER-STEEL ASSEMBLY PER PASS THROUGH THE ROLLS BEING NO GREATER THAN ABOUT ONE-SIXTEENTH OF AN INCH.
Claim 2
Independent Claim
191 words
THE METHOD OF MANUFACTURING COOP-CLAD STEEL PLATES THAT INCLUDES THE BONDING OF ONE FACE OF AN OXYGENFREE COOPER PLATE AND A STEEL SLAB OR INGOT WHEREIN THE FORMER VARIES FROM 1/8" TO 1" IN THICKNESS AS THE LATTER VARIES FROM 2" TO 15" IN THICKNESS, WHICH METHOD COMPRISES ELECTRODEPOSITING A LAYER OF NICKEL ON ONE FACE OF SAID COOPER PLATE; SECURING THE COPPER PLATE TO A STEEL SLAB OR INGOT WITH THE NICKEL-PLATE SURFAE OF THE COPPER PLATE IN FACE-TO FACE CONTACT WITH THE STEEL SLAB OR INGOT; HEATING THE RESULTING COMPOSITE ASSEMBLY UNIFORMLY THROUGOUT TO A TEMPERATURE BETWEEN ABOUT 1550 AND ABOUT 1800* F., AND SUBJECTING THE HOT ASSEMBLY TO PRESSURE ROLLS TO REDUCE ITS THICKNESS TO BETWEEN ABOUT ONEFOURTH AND ABOUT ONE-TWENTY-FIFTH OF THE THICKNESS OF THE ORIGINAL ASSEMBLY, THE REDUCTION IN THICKNESS OF SAID COPPER-STEEL ASSEMBLY PER PASS THROUGH THE ROLLS BEING NO GREATER THAN ABOUT ONE-EIGHT OF AN INCH, AND, WHEN THE THICKNESS OF THE ASSEMBLY IS WITHIN ABOUT 10% OF THE DESIRED FINAL THICKNESS, THE REDUCTION IN THICKNESS OF SAID COPPER-STEEL ASSEMBLY PER PASS THROUGH THE ROLLS BEING NO GREATER THAN ABOUT ONE-SIXTEENTH OF AN INCH.
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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) | 1958-05-02 | 1958-11-01 | 1959-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-02 | 1962-11-01 | 1963-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-02 | 1966-11-01 | 1967-05-03 | $7700.00 | Window Closed / Lapsed |