US3575738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluxes for soft soldering
Assignee: Lake Calumet Smelting Co
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Filing: 1969-03-19
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Granted: 1971-04-20
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Expires: 1989-03-19
Abstract
Abstract SOLDERING FLUXES MANUFACTURED FROM AN ADMIXTURE OF ROSIN AND WATER OR ISOPROPYL ALCOHOL BY ADDITION THERETO OF AMMONIA OR AMMONIUM HYDROXIDE IN SUFFICIENT AMOUNT TO CONVERT SAID ROSIN TO A SOAP.
Inventors
- 👤 Hugo H Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:14
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; C; C08; C08L; C08L93/00; C08L93/04
Claims Analysis
Total Claims: 0
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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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |