Patents Assigned to CDG Environmental, LLC
  • Patent number: 9656865
    Abstract: New methods are disclosed for decontaminating surfaces and enclosures that avoid problems such as salt deposits, corrosion and condensation that accompany the use of known methods. The methods involve the use of chlorine dioxide solutions prepared by passing dilute chlorine gas over solid granular sodium chlorite to produce chlorine dioxide gas which is then collected to form a solution with very low levels of impurities. The chlorine dioxide gas can be introduced into an enclosure and used to disinfect a portion of the contents of the enclosure.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: May 23, 2017
    Assignee: CDG ENVIRONMENTAL, LLC
    Inventors: Thomas Ellsworth McWhorter, Aaron Rosenblatt, Madhu Anand, John Peter Hobbs
  • Publication number: 20170136137
    Abstract: Stable, aqueous solutions of chlorine dioxide and methods for producing stable, aqueous solutions of chlorine dioxide are disclosed. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 1000 ppm by weight or less of total impurities and/or 10 ppm or less of manganese and iron combined. The aqueous chlorine dioxide solutions are storage stable for at least 90 days at 25° C. and maintain at least 75% of the initial chlorine dioxide concentration. Methods of preparing, using and transporting the chlorine dioxide solutions are also disclosed.
    Type: Application
    Filed: January 30, 2017
    Publication date: May 18, 2017
    Applicant: CDG ENVIRONMENTAL, LLC
    Inventors: Thomas Ellsworth MCWORTER, Aaron ROSENBLATT, Robert SHAY, Barzin KERAMATI, Peter KAZLAS, Madhu ANAND, John Peter HOBBS
  • Patent number: 9580317
    Abstract: The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepared by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chloride and contacting the resulting chlorine dioxide gas with a liquid.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: February 28, 2017
    Assignee: CDG ENVIRONMENTAL, LLC
    Inventors: Thomas Ellsworth McWhorter, Aaron Rosenblatt, Robert Shay, Barzin Keramati, Peter Kazlas, Madhu Anand, John Peter Hobbs
  • Patent number: 9302911
    Abstract: The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepared by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chlorite and contacting the resulting chlorine dioxide gas with a liquid.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: April 5, 2016
    Assignee: CDG Environmental, LLC
    Inventors: Thomas Ellsworth McWhorter, Aaron Rosenblatt, Robert Shay, Barzin Keramati, Peter Kazlas, Madhu Anand, John Peter Hobbs
  • Publication number: 20160058013
    Abstract: The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepared by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chloride and contacting the resulting chlorine dioxide gas with a liquid.
    Type: Application
    Filed: August 12, 2015
    Publication date: March 3, 2016
    Applicant: CDG Environmental, LLC
    Inventors: Thomas Ellsworth McWhorter, Aaron Rosenblatt, Robert Shay, Barzin Keramati, Peter Kazlas, Madhu Anand, John Peter Hobbs
  • Patent number: 9045340
    Abstract: The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepare by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chlorite and contacting the resulting chlorine dioxide gas with a liquid.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: June 2, 2015
    Assignee: CDG ENVIRONMENTAL, LLC
    Inventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati
  • Patent number: 9045338
    Abstract: The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepare by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chlorite and contacting the resulting chlorine dioxide gas with a liquid.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: June 2, 2015
    Assignee: CDG ENVIRONMENTAL, LLC
    Inventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati
  • Patent number: 9045341
    Abstract: The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepare by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chlorite and contacting the resulting chlorine dioxide gas with a liquid.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: June 2, 2015
    Assignee: CDG ENVIRONMENTAL, LLC
    Inventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati
  • Publication number: 20120201898
    Abstract: The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepare by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chloride and contacting the resulting chlorine dioxide gas with a liquid.
    Type: Application
    Filed: February 3, 2012
    Publication date: August 9, 2012
    Applicant: CDG Environmental, LLC.
    Inventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati
  • Publication number: 20120201899
    Abstract: The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepare by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chloride and contacting the resulting chlorine dioxide gas with a liquid.
    Type: Application
    Filed: February 3, 2012
    Publication date: August 9, 2012
    Applicant: CDG Environmental, LLC
    Inventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati
  • Publication number: 20120135167
    Abstract: The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepare by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chloride and contacting the resulting chlorine dioxide gas with a liquid.
    Type: Application
    Filed: February 3, 2012
    Publication date: May 31, 2012
    Applicant: CDG Environmental, LLC
    Inventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati
  • Publication number: 20120131887
    Abstract: The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepare by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chloride and contacting the resulting chlorine dioxide gas with a liquid.
    Type: Application
    Filed: February 3, 2012
    Publication date: May 31, 2012
    Applicant: CDG Environmental, LLC
    Inventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati