Patents by Inventor William A. Essary

William A. Essary 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).

  • Publication number: 20070080065
    Abstract: A method for electrocoating a surface of a full panel easy open end is disclosed. The surface is substantially uncoated prior to electrodeposition. Full panel easy open ends prepared by the methods are also disclosed.
    Type: Application
    Filed: October 7, 2005
    Publication date: April 12, 2007
    Inventors: Jeffrey Oravitz, William Essary, Michael Ziegler, Ronald Ambrose
  • Publication number: 20060078739
    Abstract: Methods for improving the barrier of a substrate having a barrier coating are disclosed. The methods generally comprise contacting the barrier coated substrate with an acid. Substrates treated according to this method are also disclosed.
    Type: Application
    Filed: October 7, 2004
    Publication date: April 13, 2006
    Inventor: William Essary
  • Patent number: 5409585
    Abstract: In an apparatus and method for electrocoating containers such as metal cans, continuity of liquid coating material with the inverted interiors of the containers is improved by partially blocking the flow of liquid from the containers by baffle means.
    Type: Grant
    Filed: April 5, 1993
    Date of Patent: April 25, 1995
    Assignee: PPG Industries, Inc.
    Inventors: William A. Essary, Gerald R. Gacesa
  • Patent number: 5266628
    Abstract: A coating composition which may be water based and which is adapted for metallic substrates is disclosed, having: (1) binder resin comprising acrylic polymer having carboxy functionality, and (2) a curing agent comprising hydroxyalkylamide, wherein the ratio of hydroxy groups in the hydroxyalkylamide to carboxy groups in the binder resin is less than 0.5:1, preferably less than 0.4 to 1, and most preferably less than 0.35 to 1. The composition has been found to yield films exhibiting good resistance to water at high temperatures, thereby rendering them particularly suitable for use on metal food and beverage containers that are subjected to sterilization or pasteurization processes.
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: November 30, 1993
    Assignee: PPG Industries, Inc.
    Inventors: William A. Essary, Michael T. List
  • Patent number: 4927875
    Abstract: Disclosed is a method for preparing an aqueous composition of low viscosity and low volatile organic solvent content which comprises: (A) addition polymerizing in solution a first monomer composition containing from 1 percent to 15 percent by weight of an epoxy-functional vinyl monomer and from 99 percent to 85 percent by weight of at least one other copolymerizable vinyl monomer in the presence of a polyester polymer having an acid value on solids of from 10 to 85 and a weight average molecular weight of from 500 to 2,000 until the epoxy functionally of the epoxy-functional vinyl monomer has been essentially completely reacted, to form a first product (1), and thereafter, (B) addition polymerizing in the aforesaid first product (1), a second monomer composition containing from 3 to 50 percent by weight, based on the total weight of vinyl monomers from parts (A) and (B), of an ethylenically unsaturated carboxylic acid and at least one other copolymerizable vinyl monomer different from the epoxy-functional vin
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: May 22, 1990
    Assignee: PPG Industries, Inc.
    Inventors: Rudolf Maska, William A. Essary
  • Patent number: 4916181
    Abstract: Disclosed is an aqueous composition of low viscosity and low volatile organic solvent content of a water-borne resin. The water-borne resin comprises: (I) from 10 to 50 percent by weight of a polyester polymer, and (II) from 90 to 50 percent by weight of a solution polymerized acrylic copolymer. The solution polymerized acrylic copolymer is derived from a mixture of monomers comprising an ethylenically unsaturated carboxylic acid monomer. The water-borne resin is at least partially neutralized by a base and, prior to neutralization, has an acid value based on resin solids of from 10 to 200.
    Type: Grant
    Filed: September 29, 1987
    Date of Patent: April 10, 1990
    Assignee: PPG Industries, Inc.
    Inventors: Rudolf Maska, William A. Essary
  • Patent number: 4357396
    Abstract: The invention is directed to an article comprising a thin film of silver and/or copper contacted with a compound selected from the group consisting of a thiadiazole substituted by a mercapto group and/or an amino group and a triazole substituted by a mercapto and optionally an amino group. The invention is also directed to a method of protecting a silver and/or copper metallic film by contacting the film with a compound selected from the above group.
    Type: Grant
    Filed: January 26, 1981
    Date of Patent: November 2, 1982
    Assignee: PPG Industries, Inc.
    Inventors: John F. Grunewalder, William A. Essary, John S. Ostrowski