US3309767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brazing alloy and method of brazing with same
Assignee: Individual
•
Filing: 1960-01-14
•
Granted: 1967-03-21
•
Expires: 1980-01-14
Abstract
No abstract record available.
Inventors
- 👤 Sama Lawrence
- 👤 Jr George T Pepino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:55
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/325
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
THE METHOD OF BRAZING NIOBIUM AND NIOBIUM ALLOYS THAT CONSISTS IN APPLYING A FINELY DIVIDED ALLOY OF TITANIUM AND 5 TO 12 WEIGH PERCENT SILICON SUSPENDED IN A LIQUID NITROCELLULOSE CARRIER TO THE SURFACES TO BE BRAZED, HEATING TO A TEMPERATURE OF APPROXIMATELY 2700*F. IN A NON-OXIDIZING ATMOSPHERE FOR A PERIOD OF APPROXIMATELY TEN MINUTES TO CAUSE THE BRAZE TO FLOW READILY, AND THEREAFTER PERMITTING THE BRAZED SURFACES TO COOL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |