Patent US4160807A successfully refreshed from Google Patents.
← Back to Patent Explorer
US4160807A Expired / Lapsed US ⏱️ 0.0 years remaining

Sulfonamido oximes, metal complexes thereof, and solutions containing such compounds for use in extraction of metal values

Assignee: Henkel Corp
•
Filing: 1978-05-24
•
Granted: 1979-07-10
•
Expires: 1998-05-24
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Certain sulfonamido oximes, metal complexes thereof and solutions of said compounds in essentially water-immiscible, liquid hydrocarbon solvents are disclosed. The sulfonamido oximes have the general structural formula: <IMAGE> wherein A, R1, R2 and R3 are as defined in the specification and claims hereof. Particular metal values are recovered from their aqueous solutions by using sulfonamido oximes dissolved in essentially water-immiscible liquid hydrocarbon solvents. The extraction process involves contacting the metal value containing aqueous solution with the solution of the sulfonamido oxime in essentially water-immiscible liquid hydrocarbon solvent and stripping the mertal values from the loaded organic phase.

Inventors

  • 👤 Michael J Virnig
  • 👤 Kenneth D Mackay

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 15:52
CPC Classifications
C; C01; C01G; C01G3/00; C01G3/003; C01G51/00; C01G51/01; C01G53/00; C01G53/01; C01G9/00; C01G9/003; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/34; Y; Y02; Y02P; Y02P10/00; Y02P10/20

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

US3714247A Cited
US4029704A Cited
US4028412A Cited
US4100163A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-07-09 1983-01-08 1983-07-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-07-09 1987-01-08 1987-07-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-07-09 1991-01-08 1991-07-10 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag