Patents by Inventor Pamela J. Dotter

Pamela J. Dotter 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).

  • Inorganic composition, process of preparation and method of use
    Publication number: 20040014989
    Abstract: A coagulant which is the reaction product of a trivalent metal salt, excluding chromium salts, an acid phosphorous compound and an aluminum hydroxy chloride, and a process for preparing such coagulant. This coagulant may be effectively used to remove suspended solids and various impurities in most water treatment applications.
    Type: Application
    Filed: July 10, 2003
    Publication date: January 22, 2004
    Inventors: Denis E. Hassick, Michael P. Flaherty, Pamela J. Dotter, Robert J Guerrini
  • Inorganic composition, process of preparation and method of use
    Patent number: 6656377
    Abstract: A coagulant which is the reaction product of a trivalent metal salt, excluding chromium salts, an acid phosphorous compound and an aluminum hydroxy chloride, and a process for preparing such coagulant. This coagulant may be effectively used to remove suspended solids and various impurities in most water treatment applications.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: December 2, 2003
    Assignee: Calgon Corporation
    Inventors: Denis E. Hassick, Michael P. Flaherty, Pamela J. Dotter, Robert J. Guerrini
  • Inorganic composition, process of preparation and method of use
    Publication number: 20020130087
    Abstract: A coagulant which is the reaction product of a trivalent metal salt, excluding chromium salts, an acid phosphorous compound and an aluminum hydroxy chloride, and a process for preparing such coagulant. This coagulant may be effectively used to remove suspended solids and various impurities in most water treatment applications.
    Type: Application
    Filed: May 21, 2001
    Publication date: September 19, 2002
    Inventors: Denis E. Hassick, Michael P. Flaherty, Pamela J. Dotter, Robert J. Guerrini
  • Inorganic composition, process of preparation and method of use
    Patent number: 6306308
    Abstract: A coagulant which is the reaction product of a trivalent metal salt (eg., FeCl3), excluding chromium salts, an acid phosphorous compound and an aluminum hydroxy chloride, and a process for preparing such coagulant. This coagulant may be effectively used to remove suspended solids and various impurities in most water treatment applications.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: October 23, 2001
    Assignee: Nalco Chemical Company
    Inventors: Denis E. Hassick, Michael P. Flaherty, Pamela J. Dotter, Robert J. Guerrini