Patents Assigned to Pavco, Inc.
  • Publication number: 20110065804
    Abstract: Articles having metallic finishes including antimicrobial agents dispersed throughout the finish and methods of electroplating said metallic finishes on a material. The metallic finishes include highly-decorative electroplated finishes for bathroom and kitchen hardware, door hardware, and other highly lustrous products where antimicrobial protection is preferred.
    Type: Application
    Filed: March 25, 2009
    Publication date: March 17, 2011
    Applicants: PAVCO INC., MICROBAN INTERNATIONAL LTD.
    Inventors: Leonard L. Diaddario, Matthew W. Stauffer
  • Publication number: 20090032145
    Abstract: ABSTRACT OF THE DISCLOSURE The present invention is directed to a high protection coating process that is particularly useful for substrates in need of corrosion protection. The invention provides methods of applying a non-chrome passivating layer or conversion coating to a substrate and optionally, a secondary conversion or passivating layer to the non-chrome passivating layer or conversion coating, and articles having said coatings thereon.
    Type: Application
    Filed: June 23, 2008
    Publication date: February 5, 2009
    Applicant: Pavco, Inc.
    Inventors: Leonard L. Diaddario, JR., Michael Marzano, Steven K. Brennan, Michael Shone
  • Patent number: 7300563
    Abstract: An aqueous acidic plating bath for the electrodeposition of a nickel or nickel alloy deposit. The bath includes nickel ions and an additive having the general formula: H2C?CHCH2NR1R2 or [H2C?CHCH2N+R1R2R3]nXn? wherein R1, R2 and R3 are selected from the functional groups consisting of hydrogen, methyl, ethyl, propyl, allyl, propyn, propanediol and combinations thereof; and Xn? is an n-valent inorganic or organic anion.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: November 27, 2007
    Assignee: Pavco, Inc.
    Inventor: Leonard L. Diaddario, Jr.
  • Patent number: 7029541
    Abstract: In a preferred embodiment of the present invention, a conversion coating composition comprising chromium (III) ions, cobalt (II) ions, and nitric acid is provided. The coating composition is substantially free of chromium (VI) ions and substantially free of an oxidizing agent. The present trivalent chromium based conversion coating provides corrosion protection equal to or greater than most hexavalent chromium conversion coatings.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: April 18, 2006
    Assignee: Pavco, Inc.
    Inventors: Leonard L. Diaddario, Jr., Michael Marzano
  • Publication number: 20040154928
    Abstract: An aqueous acidic plating bath for the electrodeposition of a nickel or nickel alloy deposit.
    Type: Application
    Filed: February 9, 2004
    Publication date: August 12, 2004
    Applicant: Pavco, Inc.
    Inventor: Leonard L. Diaddario
  • Publication number: 20040156999
    Abstract: A composition and method for providing a blank chromate conversion coating is provided. The composition is substantially free of hexavolent chromium and provides a black finish, on zinc or zinc alloy coatings. The composition includes trivalent chromium ions, phosphorous anions, anions selected from the group consisting of sulfate ions, nitrate ions and combinations thereof, at least one of a transition metal or metalloid from Groups III, IVa, Va or VIII, and an organic chelate selected from the group consisting of carboxylic acids, polycarboxylic acids and combinations thereof.
    Type: Application
    Filed: February 9, 2004
    Publication date: August 12, 2004
    Applicant: Pavco, Inc.
    Inventors: Clifford F. Biddulph, Leonard L. Diaddario, Michael Marzano, Antonino Oriti
  • Publication number: 20030145909
    Abstract: In a preferred embodiment of the present invention, a conversion coating composition comprising chromium (III) ions, cobalt (II) ions, and nitric acid is provided. The coating composition is substantially free of chromium (VI) ions and substantially free of an oxidizing agent. The present trivalent chromium based conversion coating provides corrosion protection equal to or greater than most hexavalent chromium conversion coatings.
    Type: Application
    Filed: January 24, 2002
    Publication date: August 7, 2003
    Applicant: Pavco, Inc.
    Inventors: Leonard L. Diaddario,, Michael Marzano
  • Patent number: 6143160
    Abstract: An aqueous acid plating bath for the electro-deposition of a zinc or zinc alloy deposit on a substrate which includes zinc ions and an additive of the general formula ##STR1## wherein R.sub.1 and R.sub.2 are selected from the following functional groups hydroxyl, carbonyl, carboxylic acid or its salt; R.sub.3 is selected from the following groups hydrogen, hydroxyl, carbonyl, carboxylic acid or its salts; R.sub.4 and R.sub.5 are electron withdrawing groups, such as but not totally inclusive, halides, sulfonic acid or its salts, triflouromethyl, cyano, and amino groups.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: November 7, 2000
    Assignee: Pavco, Inc.
    Inventor: Leonard L. Diaddario, Jr.
  • Patent number: 6027578
    Abstract: A chrome-free conversion coating composition for use over zinc-plated metal comprises a combination of a transition metal oxide, and a polyhydroxy aromatic to provide a coating that eliminates environmental concerns regarding chromium disposal. Aluminum chlorohydrol is also included in the composition to provide an aesthetically pleasing blue appearance. The conversion coating composition is combined with water to form a bath. Zinc plated metal is immersed in the bath to apply the coating.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: February 22, 2000
    Assignee: Pavco, Inc.
    Inventor: Michael Marzano