Patents by Inventor Frederick W. Eppensteiner

Frederick W. Eppensteiner 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).

  • Alkaline bright zinc plating and additive therefor
    Patent number: 4081336
    Abstract: An alkaline, electroplating bath for bright zinc plating comprising a heterocyclic nitrogen-containing compound such as, for example, nicotinic acid, which has been alkylated with a condensate of a difunctional halohydrin such as, for example, epichlorohydrin, and a hydroxy aryl compound such as, for example, vanillin, in admixture with certain polyethylenepolyamines or quaternary salts thereof, which bath is capable of producing bright, fine grained zinc deposits over a broad current density range both in the presence and absence of cyanides.
    Type: Grant
    Filed: April 7, 1977
    Date of Patent: March 28, 1978
    Assignee: The Richardson Company
    Inventors: Frederick W. Eppensteiner, Carl Steinecker
  • Alkaline bright zinc plating and additive composition therefore
    Patent number: 3972789
    Abstract: An alkaline, electroplating bath for bright zinc plating containing a composition comprising a condensate of a heterocyclic compound and an epihalohydrin, for example a condensate of nicotinamide and epichlorohydrin or a corresponding quaternary salt of such condensate, which bath is capable of producing bright, fine grained zinc deposits over a broad current density range both in the presence and absence of cyanides.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: August 3, 1976
    Assignee: The Richardson Company
    Inventors: Frederick W. Eppensteiner, Phillip J. DeChristopher