Patents by Inventor Patrick A. Agnew

Patrick A. Agnew 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: 8225617
    Abstract: Bulk storage of natural gas or methane is facilitated by absorbing and storing the gas in a liquefied medium through the interaction of moderate pressure, low temperature and a solvent medium. Systems and processes are provided that facilitate the absorption of natural gas or methane into a liquid or liquid vapor medium for storage and transport, and back into a gas for delivery to market. In a preferred embodiment, the absorptive properties of ethane, propane and butane under moderate conditions of temperature and pressure (associated with a novel mixing process) are utilized to store natural gas or methane at more efficient levels of compressed volume ratio than are attainable with natural gas alone under similar holding conditions. The preferred mixing process efficiently combines natural gas or methane with a solvent medium such as liquid ethane, propane, butane, or other suitable fluid, to form a concentrated liquid or liquid vapor mixture suited for storage and transport.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: July 24, 2012
    Assignee: Seaone Maritime Corporation
    Inventors: Ian Morris, Patrick A. Agnew, Bruce Hall
  • Publication number: 20100058779
    Abstract: Bulk storage of natural gas or methane is facilitated by absorbing and storing the gas in a liquefied medium through the interaction of moderate pressure, low temperature and a solvent medium. Systems and processes are provided that facilitate the absorption of natural gas or methane into a liquid or liquid vapor medium for storage and transport, and back into a gas for delivery to market. In a preferred embodiment, the absorptive properties of ethane, propane and butane under moderate conditions of temperature and pressure (associated with a novel mixing process) are utilized to store natural gas or methane at more efficient levels of compressed volume ratio than are attainable with natural gas alone under similar holding conditions. The preferred mixing process efficiently combines natural gas or methane with a solvent medium such as liquid ethane, propane, butane, or other suitable fluid, to form a concentrated liquid or liquid vapor mixture suited for storage and transport.
    Type: Application
    Filed: October 26, 2009
    Publication date: March 11, 2010
    Inventors: IAN MORRIS, PATRICK A. AGNEW, BRUCE HALL
  • Patent number: 7607310
    Abstract: Systems and processes that facilitate the absorption of natural gas or methane through the interaction of moderate pressure and low temperature into a liquid or liquid vapor medium for storage and transport, and back into a gas for delivery to market. In a preferred embodiment, the absorptive properties of ethane, propane and butane under moderate conditions of temperature and pressure (associated with a novel mixing process) are utilized to store natural gas or methane at more efficient levels of compressed volume ratio than are attainable with natural gas alone under similar holding conditions. The preferred mixing process efficiently combines natural gas or methane with a solvent medium such as liquid ethane, propane, butane, or other suitable fluid, to form a concentrated liquid or liquid vapor mixture suited for storage and transport. The solvent medium is preferably recycled in the conveyance vessel on unloading of the natural gas.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: October 27, 2009
    Assignee: SeaOne Maritime Corp.
    Inventors: Ian Morris, Patrick A. Agnew, Bruce Hall
  • Patent number: 7219682
    Abstract: A multi-vessel gas storage system and liquid displacement shuttle system that utilizes a liquid-piston shuttled to alternate reservoirs and tank banks to evacuate stored gas or other fluids from storage vessels. Preferably, the gas storage and fluid displacement shuttle system includes multiple pressure storage vessels or tanks arranged in tank banks that are preferably coupled in parallel at one end to a high pressure gas manifold to exhaust the stored gas or other fluids from the vessels and coupled in parallel at another end to separate fluid shuttle circuits. The fluid shuttle circuits include cross-piped fluid fill and drain manifolds that are fluidly linked through interposing reservoirs and pumps. In operation, the stored gas or other fluids are evacuated from the storage vessels by shuttling the volume of displacement liquid between alternating banks of storage tanks and reservoirs with alternating pumps.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: May 22, 2007
    Assignee: SeaOne Maritime Corp.
    Inventors: Patrick A. Agnew, Ian Morris, Bruce Hall