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US3597285A Expired / Lapsed US ⏱️ 0.0 years remaining

Flux for use in soldering of stainless steels

Assignee: Lake Chemical Co
•
Filing: 1969-05-02
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Granted: 1971-08-03
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Expires: 1989-05-02
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Abstract

Abstract FLUXES FOR USE IN SOLDERING STAINLESS STEELS COMPRISING COMPOSITIONS CONTAINING A MAJOR PROPORTION OF ORTHOPHOSPHORIC ACID AND A MINOR PROPORTION OF (A) FINELY DIVIDED METALLIC COPPER, OR (B) A COPPER SALT, SUCHS AS COPPER PHOSPHATE, WHICH IS SOLUBLE IN ORTHOPHOSPHORIC ACID, ADVANTAGEOUSLY IN ADMIXTURE WITH VARIOUS SUPPLEMENTAL MATERIALS.

Inventors

  • 👤 Lester Aronberg

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 01:56
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/26; B23K35/36; B23K35/3601; B23K35/3611

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1974-08-02 1975-02-01 1975-08-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-08-02 1979-02-01 1979-08-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-08-02 1983-02-01 1983-08-03 $7700.00 Window Closed / Lapsed

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