Patents by Inventor William J. Neill

William J. Neill 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 for non-chromate coating of aluminum
    Patent number: 5129967
    Abstract: A chromate and phosphate free composition and method for forming a dried in place conversion coating for aluminum and aluminum alloys. The method entails the application of the composition to aluminum or aluminum alloys and allowing the composition to dry in place. The composition is an acidic aqueous solution preferably containing more than 8 grams per liter dihydrohexafluozirconic acid, more than 10 grams per liter polyacrylic acid and more than 0.17 grams per liter hydrofluoric acid in a ratio of 1:0.84:0.014. Up to about 0.6 gram per liter dihydrohexafluotitanic acid is added to facilitate analytical testing in aqueous systems. The solution forms a dried in place conversion coating having a weight of from 6 to 25 milligrams per square foot in treatment (contact and drying) times as short as 2 seconds.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: July 14, 1992
    Assignee: Betz Laboratories, Inc.
    Inventors: Lothar S. Sander, Edward M. Musingo, William J. Neill, David W. Reichgott
  • Composition and method for non-chromate coating of aluminum
    Patent number: 4921552
    Abstract: A chromate and phosphate free composition and method for forming a dried in place conversion coating for aluminum and aluminum alloys. The method entails the application of the composition to aluminum or aluminum alloys and allowing the composition to dry in place. The composition is an acidic aqueous solution preferably containing more than 8 grams per liter dihydro-hexafluozirconaic acid, more than 10 grams per liter polyacrylic acid and more than 0.17 grams per liter hydrofluoric acid in a ratio of 1:0.84:0.014. The solution forms a dried in place conversion coating having a weight of from 6 to 25 milligrams per square foot in treatment (contact and drying) times as short as 2 seconds.
    Type: Grant
    Filed: May 3, 1988
    Date of Patent: May 1, 1990
    Assignee: Betz Laboratories, Inc.
    Inventors: Lothar S. Sander, Edward M. Musingo, William J. Neill