Patents by Inventor Vega Petrova Kotzeva

Vega Petrova Kotzeva 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).

  • Oxygen generation apparatus and method
    Patent number: 10106899
    Abstract: An oxygen generator for an oxygen-generation apparatus has a proton-conducting membrane, a cathode contacting a first side, or cathodic side, of the membrane, an anode contacting a second side, or anodic side, of the membrane, and a source of water for supply to the membrane. In use, an electrolysis voltage applied between the cathode and the anode causes electrolysis of the water to generate oxygen gas at the anode. Atmospheric oxygen, i.e. oxygen in the air, is substantially prevented from coming into contact with the cathode. For an acidic proton-conducting membrane this substantially prevents the formation of hydrogen peroxide at the cathode.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: October 23, 2018
    Assignee: Cambridge Enterprise Limited
    Inventors: Derek John Fray, Vega Petrova Kotzeva
  • OXYGEN GENERATION APPARATUS AND METHOD
    Publication number: 20150197865
    Abstract: An oxygen generator for an oxygen-generation apparatus has a proton-conducting membrane, a cathode contacting a first side, or cathodic side, of the membrane, an anode contacting a second side, or anodic side, of the membrane, and a source of water for supply to the membrane. In use, an electrolysis voltage applied between the cathode and the anode causes electrolysis of the water to generate oxygen gas at the anode. Atmospheric oxygen, i.e. oxygen in the air, is substantially prevented from coming into contact with the cathode. For an acidic proton-conducting membrane this substantially prevents the formation of hydrogen peroxide at the cathode.
    Type: Application
    Filed: March 26, 2015
    Publication date: July 16, 2015
    Applicant: CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Derek John FRAY, Vega Petrova KOTZEVA
  • Lead recycling
    Patent number: 8323376
    Abstract: The present invention describes a method of recycling lead from lead containing waste, the method comprising the steps of mixing the battery paste with aqueous citric acid solution so as to generate lead citrate; isolating lead citrate from the aqueous solution; and converting the lead citrate to lead and/or lead oxide.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: December 4, 2012
    Assignee: Cambridge Enterprise Limited
    Inventors: Ramachandran Vasant Kumar, Vega Petrova Kotzeva, Seref Sonmez
  • LEAD RECYCLING
    Publication number: 20100040938
    Abstract: The present invention describes a method of recycling lead from lead containing waste, the method comprising the steps of mixing the battery paste with aqueous citric acid solution so as to generate lead citrate; isolating lead citrate from the aqueous solution; and converting the lead citrate to lead and/or lead oxide.
    Type: Application
    Filed: November 6, 2007
    Publication date: February 18, 2010
    Applicant: CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Ramachandran Vasant Kumar, Vega Petrova Kotzeva, Seref Sonmez
  • Oxygen Generation Apparatus and Method
    Publication number: 20090008261
    Abstract: An oxygen generator for an oxygen-generation apparatus has a proton-conducting membrane (60), a cathode (50) contacting a first side, or cathodic side, of the membrane, an anode (70) contacting a second side, or anodic side, of the membrane, and a source of water for supply to the membrane. In use, an electrolysis voltage applied between the cathode and the anode causes electrolysis of the water to generate oxygen gas at the anode. Atmospheric oxygen, i.e. oxygen in the air, is substantially prevented from coming into contact with the cathode. For an acidic proton-conducting membrane this substantially prevents the formation of hydrogen peroxide at the cathode.
    Type: Application
    Filed: March 3, 2006
    Publication date: January 8, 2009
    Applicant: Cambridge Enterprise Limited
    Inventors: Vega Petrova Kotzeva, Derek John Fray