US2786265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing composite metal products
Assignee: Lukens Steel Co
•
Filing: 1953-02-03
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Granted: 1957-03-26
•
Expires: 1973-02-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis K Keay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:01
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/22; B23K20/227; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12861; Y10T428/12951; Y10T428/12958; Y10T428/12972
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROCESS FOR PRODUCING A COMPOSITE METAL PRODUCT INCLUDING A METAL BASE LAYER AND TITANIUM CLADDING LAYER WHICH COMPRISES FORMING A PACK OF SAID LAYERS SEPARATED BY A BARRIER LAYER HAVING AN IRON-CHROMIUM ALLOY ABUTTING THE CLADDING LAYER AND PREFERABLY OF A CHROMIUN CONTENT WITHIN THE RANGE OF 11 TO 30 PERCENT, HEATING SAID PACK IN AN INERT GAS PROTECTIVE ATMOSPHERE AT A TEMPERATURE BETWEEN 1350*F. AND 1700*F., SUBJECTING SAID HEATED PACK TO PRESSURE TO EFFECT PARTIAL REDUCTION THEREOF, THEREAFTER AGAIN HEATING SAID PACK AT A TEMPERATURE BETWEEN 1350%F. AND 1700*F. AND SUBJECTING SAID REHEATED PACK TO PRESSURE TO COMPLETE REDUCTION THEREOF AND EFFECT BONDING BETWEEN THE CLADDING LAYER AND BASE LAYER.
Claim 2
Dependent Claim
112 words
A PROCESS FOR PRODUCING A COMPOSITE METAL PRODUCT INCLUDING A METAL BASE LAYER AND TITANIUM CLADDING LAYER WHICH COMPRISES FORMING A PACK OF SAID LAYERS SEPARATED BY A BARRIER LAYER HAVING AN IRON-CHROMIUM ALLOY ABUTTING THE CLADDING LAYER AND PREFERABLY OF A CHROMIUN CONTENT WITHIN THE RANGE OF 11 TO 30 PERCENT, HEATING SAID PACK IN AN INERT GAS PROTECTIVE ATMOSPHERE AT A TEMPERATURE BETWEEN 1350*F. AND 1700*F., SUBJECTING SAID HEATED PACK TO PRESSURE TO EFFECT PARTIAL REDUCTION THEREOF, THEREAFTER AGAIN HEATING SAID PACK AT A TEMPERATURE BETWEEN 1350%F. AND 1700*F. AND SUBJECTING SAID REHEATED PACK TO PRESSURE TO COMPLETE REDUCTION THEREOF AND EFFECT BONDING BETWEEN THE CLADDING LAYER AND BASE LAYER.
References Cited (Backward Citations)
US625117A
Cited
US2707323A
Cited
US1190412A
Cited
US1228194A
Cited
US1886615A
Cited
US2416400A
Cited
US2619715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |