US2966738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molybdenum clad product having an intermediate metal layer and method of producing the same
Assignee: Chicago Bridge and Iron Co
•
Filing: 1955-01-03
•
Granted: 1961-01-03
•
Expires: 1975-01-03
Abstract
No abstract record available.
Inventors
- 👤 Robert C Bertossa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:27
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/008; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12812; Y10T428/12826; Y10T428/12861; Y10T428/12903; Y10T428/12917; Y10T428/12951
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
THE PROCESS WHICH COMPRISES PUTTING IN FACE-TO-FACE CONTACT, RESPECTIVELY, A FERROUS BASE-METAL SHEET, A LAYER OF BRAZING MATERIAL, A SHEET OF TANTALUM, A LAYER OF BRAZING MATERIAL, AND A SHEET OF MOLYBDENUM, SAID BRAZING MATERIAL BEING CAPABLE OF WETTING AND BRAZING THE RESPECTIVE METALS BETWEEN WHICH IT IS INSERTED, TO PRODUCE A CLADDING SANDWICH, HERMETICALLY SEALING THE RESULTING CLADDING SANDWICH, EVACUATING THE SANDWICH UNTIL A SUBSTANTIAL VACUUM IS ATTAINED THEREIN, HEATING THE SANDWICH AT LEAST UNTIL THE BRAZING MATERIAL IS MOLTEN, COOLING THE SANDWICH, RELEASING THE VACUUM AND REMOVING THE SEAL, THEREBY PRODUCING A MOLYBDENUM CLAD BASE METAL HAVING A TANTALUM LAYER IN BETWEEN.
Claim 2
Dependent Claim
104 words
THE PROCESS WHICH COMPRISES PUTTING IN FACE-TO-FACE CONTACT, RESPECTIVELY, A FERROUS BASE-METAL SHEET, A LAYER OF BRAZING MATERIAL, A SHEET OF TANTALUM, A LAYER OF BRAZING MATERIAL, AND A SHEET OF MOLYBDENUM, SAID BRAZING MATERIAL BEING CAPABLE OF WETTING AND BRAZING THE RESPECTIVE METALS BETWEEN WHICH IT IS INSERTED, TO PRODUCE A CLADDING SANDWICH, HERMETICALLY SEALING THE RESULTING CLADDING SANDWICH, EVACUATING THE SANDWICH UNTIL A SUBSTANTIAL VACUUM IS ATTAINED THEREIN, HEATING THE SANDWICH AT LEAST UNTIL THE BRAZING MATERIAL IS MOLTEN, COOLING THE SANDWICH, RELEASING THE VACUUM AND REMOVING THE SEAL, THEREBY PRODUCING A MOLYBDENUM CLAD BASE METAL HAVING A TANTALUM LAYER IN BETWEEN.
Claim 3
Dependent Claim
59 words
A DUCTILE MOLYBDENUM CLAD PRODUCT IN THE FORM OF A PLATE COMPRISING IN THE FOLLOWING ORDER AND IN FACETO-FACE CONTACT, A SHEET OF A FERROUS BASE METAL, A LAYER OF BRAZING MATERIAL, A SHEET OF TANTALUM, A LAYER OF BRAZING MATERIAL, AND A SHEET OF MOLYBDENUM, SAID METAL SHEETS BEING INTEGRALLY AND CONTINUOUSLY BONDED TOGETHER BY THE BRAZING MATERIAL.
Claim 4
Dependent Claim
59 words
A DUCTILE MOLYBDENUM CLAD PRODUCT IN THE FORM OF A PLATE COMPRISING IN THE FOLLOWING ORDER AND IN FACETO-FACE CONTACT, A SHEET OF A FERROUS BASE METAL, A LAYER OF BRAZING MATERIAL, A SHEET OF TANTALUM, A LAYER OF BRAZING MATERIAL, AND A SHEET OF MOLYBDENUM, SAID METAL SHEETS BEING INTEGRALLY AND CONTINUOUSLY BONDED TOGETHER BY THE BRAZING MATERIAL.
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US2445858A
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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) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |