Patents by Inventor Costas Christofi

Costas Christofi 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).

  • Patent number: 10047603
    Abstract: In some aspects, an acoustic analysis system includes an acoustic source and a laser vibrometer. In some instances, the acoustic source can generate an acoustic signal in a wellbore defined in a subterranean region, and the laser vibrometer can detect movement of a surface in the wellbore in response to the acoustic signal. The detected movement can be analyzed, for example, to identify properties of materials in the subterranean region.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: August 14, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Gang Li, Jesse Clay Hampton, Costas Christofi, Syed Muhammad Farrukh Hamza
  • Publication number: 20170350235
    Abstract: In some embodiments, an apparatus and a system, as well as a method and article, may operate to substantially simultaneously measure acoustic radiation from a source in a geological formation, at each of at least two sensors in an array, over a selected time period to provide acoustic pressure measurements. Further activity may comprise locating the source at a location in the geological formation with respect to the sensors by determining acoustic intensity associated with the source, based on the acoustic pressure measurements, independent of medium sound velocity in one or more media disposed between the sensors and the source. Additional apparatus, systems, and methods are disclosed.
    Type: Application
    Filed: March 30, 2015
    Publication date: December 7, 2017
    Inventors: Costas CHRISTOFI, David Alan WELSH, Federico LUCAS
  • Publication number: 20160177709
    Abstract: In some aspects, an acoustic analysis system includes an acoustic source and a laser vibrometer. In some instances, the acoustic source can generate an acoustic signal in a wellbore defined in a subterranean region, and the laser vibrometer can detect movement of a surface in the wellbore in response to the acoustic signal. The detected movement can be analyzed, for example, to identify properties of materials in the subterranean region.
    Type: Application
    Filed: August 29, 2013
    Publication date: June 23, 2016
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Gang Li, Jesse Clay Hampton, Costas Christofi, Syed Muhammad Farrukh Hamza
  • Patent number: 8602733
    Abstract: A structural and acoustical vibration dampener for a rotatable blade comprises a layer of structural/acoustic damping material coupled to at least a portion of the blade. A fan blade comprises a structural layer and a layer of damping material coupled to at least a portion of the structural layer. A method of applying a structural and acoustical vibration dampener to a fan blade comprises identifying a region on the fan blade and securing the structural/acoustical vibration dampener to the fan blade over at least a portion of the region.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: December 10, 2013
    Assignee: Trane International, Inc.
    Inventors: Costas Christofi, Quynh Hoang, Sanjay Gupta, Angus Lemon, James T. Vershaw, Nandagopal Nalla, Emile Abi-Habib
  • Patent number: 8313303
    Abstract: An acoustical vibration dampening system for a rotatable blade comprises at least one section of a rotatable blade and a layer of acoustic damping material coupled to a portion of the at least one section of a rotatable blade. A fan blade comprises a first structural section of a fan blade, a second structural section of the fan blade, and a layer of acoustic damping material provided between the first structural section and the second structural section of the fan blade. A method of making a fan blade with acoustic damping comprises forming at least two sections of a fan blade, and disposing an acoustical vibration dampener between the at least two sections of the fan blade.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: November 20, 2012
    Assignee: Trane International Inc.
    Inventors: Costas Christofi, Quynh Hoang, Sanjay Gupta, Angus Lemon, James T. Vershaw, Nandagopal Nalla, Emile Abi-Habib
  • Publication number: 20100008791
    Abstract: An acoustical vibration dampening system for a rotatable blade comprises at least one section of a rotatable blade and a layer of acoustic damping material coupled to a portion of the at least one section of a rotatable blade. A fan blade comprises a first structural section of a fan blade, a second structural section of the fan blade, and a layer of acoustic damping material provided between the first structural section and the second structural section of the fan blade. A method of making a fan blade with acoustic damping comprises forming at least two sections of a fan blade, and disposing an acoustical vibration dampener between the at least two sections of the fan blade.
    Type: Application
    Filed: July 8, 2008
    Publication date: January 14, 2010
    Applicant: TRANE INTERNATIONAL, INC.
    Inventors: Costas CHRISTOFI, Quynh HOANG, Sanjay GUPTA, Angus LEMON, James T. VERSHAW, Nandagopal NALLA, Emile ABI-HABIB
  • Publication number: 20090324418
    Abstract: A structural and acoustical vibration dampener for a rotatable blade comprises a layer of structural/acoustic damping material coupled to at least a portion of the blade. A fan blade comprises a structural layer and a layer of damping material coupled to at least a portion of the structural layer. A method of applying a structural and acoustical vibration dampener to a fan blade comprises identifying a region on the fan blade and securing the structural/acoustical vibration dampener to the fan blade over at least a portion of the region.
    Type: Application
    Filed: June 27, 2008
    Publication date: December 31, 2009
    Applicant: TRANE INTERNATIONAL, INC.
    Inventors: Costas CHRISTOFI, Quynh HOANG, Sanjay GUPTA, Angus LEMON, James T. VERSHAW, Nandagopal NALLA, Emile ABI-HABIB