Patents by Inventor Meredith Curren

Meredith Curren 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).

  • Process for producing ammonia and sulfuric acid from a stream comprising ammonium sulfate
    Patent number: 7632479
    Abstract: A process for producing ammonia and sulfuric acid from a stream comprising ammonium sulfate is provided. The process comprises the steps of heating the stream to produce ammonia and a decomposition product comprising one or more than one of a bisulfate salt, a pyrosulfate salt, or a combination thereof. The ammonia produced is recovered, and water is added to the decomposition product to produce a stream comprising the decomposition product. The stream comprising the decomposition product is processed by acid retardation to obtain a sulfuric acid stream and a stream comprising one or more than one sulfate salt.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: December 15, 2009
    Assignee: Iogen Energy Corporation
    Inventors: Meredith Curren, Brian Foody, Jeff Tolan
  • PROCESS FOR PRODUCING AMMONIA AND SULFURIC ACID FROM A STREAM COMPRISING AMMONIUM SULFATE
    Publication number: 20080056983
    Abstract: A process for producing ammonia and sulfuric acid from a stream comprising ammonium sulfate is provided. The process comprises the steps of heating the stream to produce ammonia and a decomposition product comprising one or more than one of a bisulfate salt, a pyrosulfate salt, or a combination thereof. The ammonia produced is recovered, and water is added to the decomposition product to produce a stream comprising the decomposition product. The stream comprising the decomposition product is processed by acid retardation to obtain a sulfuric acid stream and a stream comprising one or more than one sulfate salt.
    Type: Application
    Filed: August 29, 2007
    Publication date: March 6, 2008
    Applicant: IOGEN ENERGY CORPORATION
    Inventors: Meredith Curren, Brian Foody, Jeff Tolan