US3660127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux for use in soldering of stainless steels
Assignee: Lake Chemical Co
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Filing: 1969-08-11
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Granted: 1972-05-02
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Expires: 1989-08-11
Abstract
Abstract Fluxes for use in soldering stainless steels comprising compositions containing a major proportion of orthophosphoric acid and a minor proportion of a mono- or diammonium phosphate, or an amine mono- or diorthophosphate, advantageously in the presence of water, and desirably in admixture with various supplemental materials.
Inventors
- 👤 Lester Aronberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:18
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3611
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
19 words
The flux of claim 1 in which said flux is in the form of a liquid containing added water.
Claim 2
Dependent Claim
29 words
The flux of claim 2 in which the phosphate salt is at least one member of the group of monoammonium phosphate and diammonium phosphate in solution in said liquid.
Claim 3
Dependent Claim
15 words
The flux of claim 1 in which the phosphorus-containing acid comprises 75-105 percent orthophosphoric acid.
Claim 4
Dependent Claim
11 words
The flux of claim 4 in the form of a liquid.
Claim 5
Dependent Claim
14 words
The flux of claim 4 which includes a minor proportion of a nonionic surfactant.
Claim 6
Dependent Claim
14 words
The flux of claim 5 which includes a minor proportion of a nonionic surfactant.
Claim 7
Dependent Claim
32 words
A flux in accordance with claim 5 wherein the following ingredients are present in approximately the stated parts by weight: Orthophosphoric acid (75-105%) 100 Monammonium and/or diammonium phosphate 11 15-35 Water 10-15
Claim 8
Dependent Claim
28 words
A flux in accordance with claim 8 wherein the following ingredients are present in approximately the stated parts by weight: Orthophosphoric acid (75%)100 Monoammonium phosphate 36 Water 14
Claim 9
Dependent Claim
29 words
A flux in accordance with claim 8 wherein the following ingredients are present in approximately the stated parts by weight: Orthophosphoric acid (75%) 100 Diammonium phosphate 17 Water 7
Claim 10
Dependent Claim
19 words
The flux of claim 2 in which the amine is an alkylamine containing from one to three carbon atoms.
Claim 11
Dependent Claim
15 words
The flux of claim 11 in which the phosphorus-containing acid is 75-105 percent orthophosphoric acid.
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |