John Arthur Henricks

US Patent:

40935230, Jun 6, 1978

Filed:

Feb 7, 1977

Appl. No.:

5/766554

Inventors:

John A. Henricks - Oak Park IL
Robert E. Wild - Wheaton IL

International Classification:

C25D 322

US Classification:

204 55R

Abstract:

This invention is directed to a brightening system for zinc deposited from an acid zinc chloride electrolyte containing potassium chloride as a conducting salt and boric acid as a buffer. The active brightener in the system is an aromatic aldehyde or ketone which is dispersed into the electrolyte by a wetting agent system consisting essentially of a mixture of a fatty acid imidiazole sulfonate and a fatty diaminobetaine carboxylate; assisted by a hydrotrope selected from the group consisting of alcohol ethers, cyclic alcohols, and aromatic sulfonates. In some cases, this brightening system can be augmented by the prior art nicotinic acid, or polyamine zinc brightener.

US Patent:

44181256, Nov 29, 1983

Filed:

Dec 6, 1982

Appl. No.:

6/432562

Inventors:

John A. Henricks - Oak Park IL

International Classification:

C25D 514
B32B 1501
B32B 1518

US Classification:

428639

Abstract:

This invention is directed to the formation of highly protective electroplated multi-metal coatings over an iron basis metal. The high degree of protection is obtained by the deposition of three sucessive layers of two dissimilar metal layers that form a galvanic cell in which one of the two adjacent metals is anodic to the other so that the corroding anodic electroplate will spread the attack laterally and thus prevent the corrosive media from drilling through to the base metal. The coating comprises an initial layer of sulfur free nickel followed in sucession by a sulfur containing bright nickel, cadmium, copper, sulfur free nickel, sulfur containing nickel and microporous chromium.