EP Patent

EP0079771A1 — Electrodeposition of chromium and its alloys

Assigned to International Business Machines Corp · Expires 1983-05-25 · 43y expired

What this patent protects

A chromium electroplating electrolyte comprising a source of trivalent chromium ions, a complexant, a buffer agent and a sulphur species selected from sulphites and dithionites, the complexant being selected so that the stability constant K, of the chromium complex as defined her…

USPTO Abstract

A chromium electroplating electrolyte comprising a source of trivalent chromium ions, a complexant, a buffer agent and a sulphur species selected from sulphites and dithionites, the complexant being selected so that the stability constant K, of the chromium complex as defined herein is in the range 10 6 < K, < 10 ' 2 M -1 preferably the chromium ions have a molar concentration lower than 0.01 M. Complexants within this range include aspartic acid, iminodiacetic acid, nitrilotriacetic acid, 5-sulphosalicylic acid and citric acid.

Drugs covered by this patent

Patent Metadata

Patent number
EP0079771A1
Jurisdiction
EP
Classification
—
Expires
1983-05-25
Drug substance claim
No
Drug product claim
No
Assignee
International Business Machines Corp
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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