US3292255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brazing alloys for tungsten and molybdenum
Assignee: Individual
•
Filing: 1964-06-25
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Granted: 1966-12-20
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Expires: 1984-06-25
Abstract
No abstract record available.
Inventors
- 👤 James C Marshall
- 👤 Harlos G Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:27
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/04; B; B23; B23K; B23K35/00; B23K35/001; B23K35/005; B23K35/22; B23K35/24; B23K35/32; C22C5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE METHOD OF JOINING TUNGSTEN, MOLYBDENUM AND ALLOYS CONTAINING A PREDOMINANT PROPORTION OF SAID METALS TO THEMSELVES AND TO ONE ANOTHER WHICH COMPRISES DISPOSING SURFACES THE PARTS TO BE JOINED IN ABUTTING RELATIONSHIP WITH A BRAZING ALLOY DISPOSED ADJACENT SAID ABUTTING SURFAACE, SAID BRAZING ALLOY CONSISTING OF 40 TO 87 WEIGHT PERCENT MOLYBDENUM, 5 TO 40 WEIGHT PERCENT RUTHENIUM AND 8 TO 55 WEIGHT PERCENT RHENIUM, THE COMPOSITION OF SAID BRAZING ALLOY BEING FURTHER LIMITED TO THE AREA BOUNDED BY ABC IN THE ACCOMPANYING FIGURE, HEATING THE RESULTING ASSEMBLY TO BRAZING TEMPERATURE IN THE RANGE OF 1950*C. TO 2500*C. UNDER NON-OXIDIZING CONDITIONS AND COOLING THE RESULTING BRAZED JOINT.
Claim 2
Independent Claim
108 words
THE METHOD OF JOINING TUNGSTEN, MOLYBDENUM AND ALLOYS CONTAINING A PREDOMINANT PROPORTION OF SAID METALS TO THEMSELVES AND TO ONE ANOTHER WHICH COMPRISES DISPOSING SURFACES THE PARTS TO BE JOINED IN ABUTTING RELATIONSHIP WITH A BRAZING ALLOY DISPOSED ADJACENT SAID ABUTTING SURFAACE, SAID BRAZING ALLOY CONSISTING OF 40 TO 87 WEIGHT PERCENT MOLYBDENUM, 5 TO 40 WEIGHT PERCENT RUTHENIUM AND 8 TO 55 WEIGHT PERCENT RHENIUM, THE COMPOSITION OF SAID BRAZING ALLOY BEING FURTHER LIMITED TO THE AREA BOUNDED BY ABC IN THE ACCOMPANYING FIGURE, HEATING THE RESULTING ASSEMBLY TO BRAZING TEMPERATURE IN THE RANGE OF 1950*C. TO 2500*C. UNDER NON-OXIDIZING CONDITIONS AND COOLING THE RESULTING BRAZED JOINT.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |