Patent US2499641A successfully refreshed from Google Patents.
US2499641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brazing and hard soldering flux
Assignee: Individual
•
Filing: 1945-12-22
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Granted: 1950-03-07
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Expires: 1965-12-22
Abstract
No abstract record available.
Inventors
- 👤 Robert B Goody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:09
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3606
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A FLUX FOR BRAZING AND HARD SOLDERING CONSISTING OF THE FUSION PRODUCT OF 30% TO 90% BY WEIGHT OF AN ALKALI METALLIC FLUOBORATE, THE REMAINDER CONSISTING OF SUBSTANTIALLY EQUAL AMOUNTS OF AN ALKALI BORATE, BORIC ACID AND AN ALKALI CARBONATE.
Claim 2
Dependent Claim
40 words
A FLUX FOR BRAZING AND HARD SOLDERING CONSISTING OF THE FUSION PRODUCT OF 30% TO 90% BY WEIGHT OF AN ALKALI METALLIC FLUOBORATE, THE REMAINDER CONSISTING OF SUBSTANTIALLY EQUAL AMOUNTS OF AN ALKALI BORATE, BORIC ACID AND AN ALKALI CARBONATE.
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) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |