US2829998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soldering fluxes
Assignee: Fisons Industrial Chemicals Ltd
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Filing: 1956-03-12
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Granted: 1958-04-08
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Expires: 1976-03-12
Abstract
No abstract record available.
Inventors
- 👤 Glynn Harry Ephraim
- 👤 Pascoe Peter Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:44
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; B23K35/3615
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A SOLDERING FLUX CONSISTING ESSENTIALLY OF ABOUT 1050% BY WEIGHT OF AT LEAST ONE HYDRAZINE SALT SELECTED FROM THE GROUP CONSISTING OF HYDRAZINE SALTS OF HYDROFLUORIC ACID AND HYDRAZINE SALTS OF FLUOROBORIC ACID, AND OF 90-50% BY WEIGHT OF A VEHICLE COMPRISING AN AMINO COMPOUNDED SELECTED FROM THE GROUP CONSISTING OF ORGANIC CYCLIC AMINO-COMPOUNDS AND ORGANIC ACYCLIC AMINO-COMPOUNDS, THE SAID VEHICLE BEING LIQUID AND VOLATILE SUBSTANTIALLY WITHOUT DECOMPOSITION AT THE SOLDERING TEMPERATURE.
Claim 2
Dependent Claim
72 words
A SOLDERING FLUX CONSISTING ESSENTIALLY OF ABOUT 1050% BY WEIGHT OF AT LEAST ONE HYDRAZINE SALT SELECTED FROM THE GROUP CONSISTING OF HYDRAZINE SALTS OF HYDROFLUORIC ACID AND HYDRAZINE SALTS OF FLUOROBORIC ACID, AND OF 90-50% BY WEIGHT OF A VEHICLE COMPRISING AN AMINO COMPOUNDED SELECTED FROM THE GROUP CONSISTING OF ORGANIC CYCLIC AMINO-COMPOUNDS AND ORGANIC ACYCLIC AMINO-COMPOUNDS, THE SAID VEHICLE BEING LIQUID AND VOLATILE SUBSTANTIALLY WITHOUT DECOMPOSITION AT THE SOLDERING TEMPERATURE.
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) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |