Patents Assigned to CDG Environmental, LLC
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Patent number: 9656865Abstract: 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: GrantFiled: April 5, 2007Date of Patent: May 23, 2017Assignee: CDG ENVIRONMENTAL, LLCInventors: Thomas Ellsworth McWhorter, Aaron Rosenblatt, Madhu Anand, John Peter Hobbs
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Publication number: 20170136137Abstract: 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: ApplicationFiled: January 30, 2017Publication date: May 18, 2017Applicant: CDG ENVIRONMENTAL, LLCInventors: Thomas Ellsworth MCWORTER, Aaron ROSENBLATT, Robert SHAY, Barzin KERAMATI, Peter KAZLAS, Madhu ANAND, John Peter HOBBS
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Patent number: 9580317Abstract: 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: GrantFiled: August 12, 2015Date of Patent: February 28, 2017Assignee: CDG ENVIRONMENTAL, LLCInventors: Thomas Ellsworth McWhorter, Aaron Rosenblatt, Robert Shay, Barzin Keramati, Peter Kazlas, Madhu Anand, John Peter Hobbs
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Patent number: 9302911Abstract: 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: GrantFiled: November 14, 2006Date of Patent: April 5, 2016Assignee: CDG Environmental, LLCInventors: Thomas Ellsworth McWhorter, Aaron Rosenblatt, Robert Shay, Barzin Keramati, Peter Kazlas, Madhu Anand, John Peter Hobbs
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Publication number: 20160058013Abstract: 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: ApplicationFiled: August 12, 2015Publication date: March 3, 2016Applicant: CDG Environmental, LLCInventors: Thomas Ellsworth McWhorter, Aaron Rosenblatt, Robert Shay, Barzin Keramati, Peter Kazlas, Madhu Anand, John Peter Hobbs
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Patent number: 9045340Abstract: 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: GrantFiled: February 3, 2012Date of Patent: June 2, 2015Assignee: CDG ENVIRONMENTAL, LLCInventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati
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Patent number: 9045338Abstract: 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: GrantFiled: February 3, 2012Date of Patent: June 2, 2015Assignee: CDG ENVIRONMENTAL, LLCInventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati
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Patent number: 9045341Abstract: 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: GrantFiled: February 3, 2012Date of Patent: June 2, 2015Assignee: CDG ENVIRONMENTAL, LLCInventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati
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Publication number: 20120201898Abstract: 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: ApplicationFiled: February 3, 2012Publication date: August 9, 2012Applicant: CDG Environmental, LLC.Inventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati
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Publication number: 20120201899Abstract: 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: ApplicationFiled: February 3, 2012Publication date: August 9, 2012Applicant: CDG Environmental, LLCInventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati
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Publication number: 20120135167Abstract: 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: ApplicationFiled: February 3, 2012Publication date: May 31, 2012Applicant: CDG Environmental, LLCInventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati
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Publication number: 20120131887Abstract: 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: ApplicationFiled: February 3, 2012Publication date: May 31, 2012Applicant: CDG Environmental, LLCInventors: Thomas Ellsworth McWhorter, Peter Kazlas, Madhu Anand, John Peter Hobbs, Aaron A. Rosenblatt, Robert H. Shay, Barzin Keramati