Patents Assigned to J. N. Eltzroth & Associates Inc. - Justia Patents Search

Patents Assigned to J. N. Eltzroth & Associates Inc.

Composition and process for inhibiting corrosion of ferrous or non-ferrous metal surfaced articles and providing receptive surface for synthetic resin coating compositions

Patent number: 4564397

Abstract: Phosphate coated ferrous and non-ferrous metal surfaced articles are passivated without treatment by a chromium compound by rinsing with an aqueous solution of urea or a urea derivative, or an acidulated urea or urea derivative in an amount sufficient to form a corrosion resistant barrier on the surface which is receptive to synthetic resinous coating compositions.

Type: Grant

Filed: June 21, 1984

Date of Patent: January 14, 1986

Assignee: J. N. Eltzroth & Associates Inc.

Inventor: Ross C. Opsahl