US2700628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soldering flux
Assignee: Individual
•
Filing: 1951-12-07
•
Granted: 1955-01-25
•
Expires: 1971-12-07
Abstract
No abstract record available.
Inventors
- 👤 Rosa John A De
- 👤 Chester A Snell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:28
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
AN ACTIVE, SUBSTANTIALLY NON-CORROSIVE SOFT SOLDERING FLUX FOR SUCH METALS AS COPPER, BRASS, AND TINPLATE CONSISTING ESSENTIALLY OF ABOUT 25% BY WEIGHT OF A ROSIN MODIFIED MALEIC ESTER TYPE RESIN, 1% BY WEIGHT OF CETYL TRIMETHYL AMMONIUM BROMIDE, 10% BY WEIGHT OF AMYL ACETATE AND 64% BY WEIGHT OF ALCOHOL.
Claim 2
Dependent Claim
50 words
AN ACTIVE, SUBSTANTIALLY NON-CORROSIVE SOFT SOLDERING FLUX FOR SUCH METALS AS COPPER, BRASS, AND TINPLATE CONSISTING ESSENTIALLY OF ABOUT 25% BY WEIGHT OF A ROSIN MODIFIED MALEIC ESTER TYPE RESIN, 1% BY WEIGHT OF CETYL TRIMETHYL AMMONIUM BROMIDE, 10% BY WEIGHT OF AMYL ACETATE AND 64% BY WEIGHT OF ALCOHOL.
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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) | 1958-01-24 | 1958-07-26 | 1959-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-24 | 1962-07-26 | 1963-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-24 | 1966-07-26 | 1967-01-25 | $7700.00 | Window Closed / Lapsed |