Patents by Inventor Pranas Dobrovolskis

Pranas Dobrovolskis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electroplating composition and process
    Patent number: 5194140
    Abstract: The invention presented relates to (a) novel complexes of cobalt salts and copolymers of maleic anhydride, ethylenediamine and epichlorohydrin; (b) electroplating compositions for deposit of zinc-cobalt alloys wherein the cobalt is employed in the form of a complex of the above type; and (c) a process for the electrodeposition of bright zinc-cobalt alloys using the latter compositions.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: March 16, 1993
    Assignee: MacDermid, Incorporated
    Inventors: Pranas Dobrovolskis, Nina Kashtalyanova, Gytis-Kazimeras Kupetis, Budilovskil Julius