Patents Assigned to CDG Technology Inc.
  • Process for manufacturing and using a more stable formulation of sodium chlorite
    Patent number: 6824756
    Abstract: Method for producing stable sodium chlorite by pelletization of granular sodium chlorite with metal salt or salts forming hydrates with water of hydration in the pellets being more than 5% of the anhydrous weight of the sodium chlorite. Pelletized sodium chlorite can be used to produce chlorine dioxide gas by passing a dilute mixture of chlorine gas and an inert gas through a bed of the pellets.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: November 30, 2004
    Assignee: CDG Technology, Inc.
    Inventors: Aaron A. Rosenblatt, Thomas E. McWhorter, Nicholas Franco, Barzin Keramati
  • Methods of treating water using combinations of chlorine dioxide, chlorine and ammonia
    Patent number: 6716354
    Abstract: Raw water is treated with chlorine, chlorine dioxide and ammonia in various stages as it proceeds from raw water acquisition through clarification (e.g., coagulation, flocculation, sedimentation, and filtration) to storage of finished water from which the treated water can be introduced into a distribution system. Chlorine dioxide can be used as a pre-oxidant or disinfectant. Chlorine can be used as a disinfectant or to react with ammonia to produce monochloramine.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: April 6, 2004
    Assignee: CDG Technology, Inc.
    Inventors: Aaron A. Rosenblatt, Thomas E. McWhorter, David Rosenblatt, Dale Genther, Keith Muller
  • Method and apparatus for generating gaseous chlorine dioxide-chlorine mixtures
    Publication number: 20030138371
    Abstract: Gaseous mixture of chlorine dioxide and chlorine produced by reacting an inorganic acid with an aqueous solution of an alkali metal chlorate by controlled introduction of the inorganic acid into the aqueous solution of alkali metal chlorate. Inorganic acid passed through a volume of alkali metal chlorate flowing through a horizontal reactor in a plug flow regime results in an enhanced gaseous mixture of chlorine dioxide, chlorine and steam that can be withdrawn as a product stream.
    Type: Application
    Filed: January 18, 2002
    Publication date: July 24, 2003
    Applicant: CDG Technology, Inc.
    Inventors: Thomas E. McWhorter, Aaron A. Rosenblatt, David Rosenblatt, Brazin Keramati
  • Method and apparatus for detecting, measuring, and/or removing chlorine gas contamination in gaseous chlorine dioxide
    Patent number: 6537821
    Abstract: Method and apparatus for detecting the presence of or removing chlorine in a gaseous product stream from a chlorine dioxide generator by mixing gaseous ammonia or ammonia vapors with the product stream and either observing smoke generated by the reaction of ammonia with any chlorine present in the chlorine dioxide product stream or separating reaction products from the chlorine dioxide.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: March 25, 2003
    Assignee: CDG Technology Inc.
    Inventors: Aaron A. Rosenblatt, Thomas E. McWhorter, David Rosenblatt, Dale A. Genther, Mark Massar, Katarina Georgiev
  • Methods of treating water using combinations of chlorine dioxide, chlorine and ammonia
    Publication number: 20020125196
    Abstract: Raw water is treated with chlorine, chlorine dioxide and ammonia in various stages as it proceeds from raw water acquisition through clarification (e.g., coagulation, flocculation, sedimentation, and filtration) to storage of finished water from which the treated water can be introduced into a distribution system. Chlorine dioxide can be used as a pre-oxidant or disinfectant. Chlorine can be used as a disinfectant or to react with ammonia to produce monochloramine.
    Type: Application
    Filed: March 8, 2001
    Publication date: September 12, 2002
    Applicant: CDG Technology, Inc.
    Inventors: Aaron A. Rosenblatt, Thomas E. McWhorter, David Rosenblatt, Dale Genther, Keith Muller