Patents by Inventor Edward Rodzewich

Edward Rodzewich 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).

  • Composition and method of forming a black no-rinse conversion coating on metal surfaces
    Patent number: 5441773
    Abstract: A black, no-rinse conversion coating on metal surfaces is provided. The treatment of a metal such as aluminum or aluminum alloys with a composition of hexavalent chromium, a modified styrene acrylic resin, carbon black thickeners, surfactants and coalescents results in a black no-rinse conversion coating. The black coating provides corrosion resistance and is resistant to gasoline, hot oil and ethylene glycol. The coating solution is particularly effective on complex shapes having closely spaced parts such as automotive radiators or condensers.
    Type: Grant
    Filed: August 24, 1994
    Date of Patent: August 15, 1995
    Assignee: Betz Laboratories, Inc.
    Inventor: Edward A. Rodzewich
  • Ambient cleaners for aluminum
    Patent number: 5441572
    Abstract: A method and composition for cleaning aluminum surfaces is disclosed. The surfaces are contacted with a treatment comprising potassium hydroxide, a silicate compound and an alkyl imino acid surfactant.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: August 15, 1995
    Assignee: Betz Laboratories, Inc.
    Inventor: Edward A. Rodzewich
  • Reactive silane composition and process for enhanced drainage of residual aqueous rinse on the external surfaces of plastic parts
    Patent number: 5354494
    Abstract: Processes for enhancing the drainage of residual aqueous rinse from the external surfaces of plastic parts, such as auto fascia, are disclosed. The processes employ an aqueous solution of an amine functional silane compound, which when applied to the surfaces of plastic parts will not rinse off during subsequent rinse stages and will remain on the plastic parts.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: October 11, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: Barry P. Gunagan, Jeffrey I. Melzer, Edward A. Rodzewich, Robert A. Iezzi
  • Acid inhibitor composition and process in hydrofluoric acid chemical cleaning
    Patent number: 4104303
    Abstract: A Mannich base and thiourea inhibitor composition and method of inhibiting the acid attack by aqueous hydrofluoric acid on ferrous metal surfaces, and in particular, highly reactive ferrous metal surfaces.
    Type: Grant
    Filed: August 26, 1976
    Date of Patent: August 1, 1978
    Assignee: Amchem Products, Inc.
    Inventors: James Douglas Anderson, Edgar S. Hayman, Jr., Edward A. Rodzewich
  • Acid inhibitor composition and process in hydrofluoric acid chemical cleaning
    Patent number: 3992313
    Abstract: A Mannich base and thiourea inhibitor composition and method of inhibiting the acid attack by aqueous hydrofluoric acid on ferrous metal surfaces, and in particular, highly reactive ferrous metal surfaces.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: November 16, 1976
    Assignee: Amchem Products, Inc.
    Inventors: James Douglas Anderson, Edgar S. Hayman, Jr., Edward A. Rodzewich
  • Cleaner for tin plated ferrous metal surfaces
    Patent number: 3975215
    Abstract: A composition and method for treating tin-plated ferrous metal surfaces to remove oils and other contaminants in the form of soil thereon, without etching the surface. Particularly, this invention relates to a composition and method for cleaning drawn and ironed tin-plated ferrous metal containers.
    Type: Grant
    Filed: March 26, 1975
    Date of Patent: August 17, 1976
    Assignee: Amchem Products, Inc.
    Inventor: Edward A. Rodzewich