Patents by Inventor Charlene A. Falleroni

Charlene A. Falleroni 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).

  • Method and apparatus for reducing tin defects in float glass
    Patent number: 6094942
    Abstract: The present invention provides a method of reducing tin defects in flat glass made by the float process. In the float process, molten glass is delivered onto a pool of molten tin within an enclosed chamber and formed into a glass ribbon. Oxygen gas dissolved in the molten tin combines with the tin to form tin oxide which vaporizes and collects within the chamber, resulting in defects in the glass. In the present invention, hydrogen gas is introduced directly into the molten tin to react with the oxygen gas and tin oxide within the molten tin to form water and elemental tin, resulting in a reduction in the amount of tin oxide within the molten tin. In one particular embodiment of the invention, the hydrogen gas is introduced into the molten tin through an elongated, porous graphite member submerged in the molten tin within the forming chamber such that it extends along and is located outboard of selected portions of the edge of the glass ribbon.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: August 1, 2000
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Charlene A. Falleroni, Donald L. DeSantis, Kevin G. Hill
  • Treatment of glass to reduce venting during thermal treatment and a glass article made thereby
    Patent number: 4824712
    Abstract: A method and composition for coating scored regions or holes in glass articles prior to heat treatment in order to maintain residual compressive stresses and reduce venting are disclosed. The method and composition of the present invention utilize silica-containing sols which gel and density and ultimately form glassy films during the heat treatment of the coated glass articles.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: April 25, 1989
    Assignee: PPG Industries, Inc.
    Inventors: Charlene A. Falleroni, Chia-Cheng Lin
  • Sol-gel compositions containing silane and alumina
    Patent number: 4731264
    Abstract: An organoalkoxysilane/alumina sol-gel composition and method for its production are disclosed whereby an aluminum alkoxide is hydrolyzed in water to form a sol, to which is added a hydrolyzable organoalkoxysilane of the general formulaR.sub.x Si(OR').sub.4-xwherein R is an organic radical, R' is a low molecular weight alkyl radical, and x is at least 1 and less than 4. The composition is dried and cured to form an organosiloxane/alumina monolith or coating on a substrate.
    Type: Grant
    Filed: October 3, 1986
    Date of Patent: March 15, 1988
    Assignee: PPG Industries, Inc.
    Inventors: Chia-Cheng Lin, Charlene A. Falleroni
  • Method for making aluminum trimetaphosphates from powder reactants
    Patent number: 4333914
    Abstract: A method for preparing aluminum trimetaphosphate comprising various chain form polyphosphate species by heating a mixture of aluminum hydroxide and ammonium phosphate is disclosed.
    Type: Grant
    Filed: November 26, 1980
    Date of Patent: June 8, 1982
    Assignee: PPG Industries, Inc.
    Inventors: James E. Neely, Jr., Chia-Cheng Lin, Charlene A. Falleroni, Annette Moff
  • Method for making B-form aluminum trimetaphosphate from powder reactants
    Patent number: 4329327
    Abstract: A method for preparing aluminum trimetaphosphate predominately in the B-form by heating a mixture of aluminum hydroxide and ammonium phosphate compound is disclosed.
    Type: Grant
    Filed: November 26, 1980
    Date of Patent: May 11, 1982
    Assignee: PPG Industries, Inc.
    Inventors: James E. Neely, Jr., Annette Moff, Chia-Cheng Lin, Charlene A. Falleroni
  • Trimetaphosphate compounds of trivalent metals
    Patent number: 4312844
    Abstract: A method for preparing a trimetaphosphate of a trivalent species by heating a mixture of ammonium phosphate and an oxygen-containing compound of the trivalent species is disclosed.
    Type: Grant
    Filed: November 26, 1980
    Date of Patent: January 26, 1982
    Assignee: PPG Industries, Inc.
    Inventors: James E. Neely, Jr., Charlene A. Falleroni, Annette Moff, Chia-Cheng Lin