Patents Assigned to Porex Corporation
  • Publication number: 20140217032
    Abstract: This application discloses porous self-sealing media comprising a sintered mixture of an absorbent material and a thermoplastic. The self-sealing media block passage of organic solvents or organic solvents in aqueous mixtures, wherein the organic solvents are at concentrations greater than about 40%. The self-sealing media also block acidic solutions. The self-sealing media are useful in a variety of applications such as a pipette tip filter, in line filter, vent, non-mechanical check valve, safety valve, and suction canister.
    Type: Application
    Filed: March 25, 2014
    Publication date: August 7, 2014
    Applicant: POREX CORPORATION
    Inventor: Guoqiang MAO
  • Publication number: 20140205272
    Abstract: This invention relates to a conductive composite wick comprising a porous wicking element coupled a conductive element for releasing vaporizable materials from devices such as an air freshener device or insect control system.
    Type: Application
    Filed: August 13, 2012
    Publication date: July 24, 2014
    Applicant: POREX CORPORATION
    Inventors: William Graham Midgette, Guoqiang Mao, Timothy Martin, Edward Jino Kim, Christopher Lynch
  • Publication number: 20140188089
    Abstract: The present application provides a device and methods of making and using these devices. The devices comprise porous caps and porous vents made from sintered porous polymeric media comprising plastic particles, elastomeric particles or a combination thereof. These devices are used with medical devices or components thereof to provide ease of use, resistance to infection, sterilization and venting.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 3, 2014
    Applicant: POREX CORPORATION
    Inventors: William G. Midgette, GuoQiang Mao, Avi Robbins, Jack Chan
  • Patent number: 8690981
    Abstract: This application discloses porous self-sealing media comprising a sintered mixture of an absorbent material and a thermoplastic. The self-sealing media block passage of organic solvents or organic solvents in aqueous mixtures, wherein the organic solvents are at concentrations greater than about 40%. The self-sealing media also block acidic solutions. The self-sealing media are useful in a variety of applications such as a pipette tip filter, in line filter, vent, non-mechanical check valve, safety valve, and suction canister.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: April 8, 2014
    Assignee: Porex Corporation
    Inventor: Guoqiang Mao
  • Publication number: 20140017693
    Abstract: This application discloses cards comprising sintered porous plastic which may be employed in liquid sample collection, storage, transport and/or delivery to an analytical device. Sintered porous plastic materials provide a unique porous structure, an inert substrate, precise liquid holding capability, are quick drying, and easy to cut and handle.
    Type: Application
    Filed: April 18, 2012
    Publication date: January 16, 2014
    Applicant: POREX CORPORATION
    Inventors: Guoqiang Mao, James P. Wingo
  • Publication number: 20140018701
    Abstract: The present invention provides a liquid sampling, storage, transfer and delivery device comprising housing containing a porous nib. The porous nib in the device contacts the sample, collects the sample, stores the sample, transports the sample inside its porous matrix and releases the sample from the porous matrix upon demand.
    Type: Application
    Filed: April 18, 2012
    Publication date: January 16, 2014
    Applicant: POREX CORPORATION
    Inventors: Guoqiang Mao, James P. Wingo
  • Patent number: 8628843
    Abstract: The present invention provides sintered composite polymeric materials and methods of making and using the same. The sintered composite polymeric materials are made by sintering composite particles comprising a polytetrafluoroethylene component and a carbonaceous component, wherein the carbonaceous component is dispersed throughout the polytetrafluoroethylene component.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: January 14, 2014
    Assignee: Porex Corporation
    Inventor: Andrew James MacLennan
  • Publication number: 20130203089
    Abstract: The present invention relates to an adapter containing a filter that can be used with pipetting devices, particularly robotic pipetting devices, to efficiently connect the pipetting device to pipette tips with minimal distortion of the pipette tip. The present invention also relates to a process and a system of using an adapter containing a filter that can be used with pipetting devices, particularly robotic pipetting devices, to assemble the adapter together with an unfiltered pipette tip on the site of application. The adapter and pipette tip are each stackable for saving space at the work station.
    Type: Application
    Filed: September 21, 2011
    Publication date: August 8, 2013
    Applicant: Porex Corporation
    Inventors: James P. Wingo, Tim Meredith, Edward M. Kaucic, Timothy Martin, Guoqiang Mao
  • Patent number: 8349400
    Abstract: Methods of making porous composite materials are provided. These methods involve providing a sintered porous first polymeric material, providing a solution containing a second polymeric material dissolved in a solvent, and, depositing the solution onto the sintered porous first polymeric material to form a precipitated porous second polymeric material wherein a portion of the second polymeric material is fused to the sintered, porous first polymeric material by at least one direct physical bond, and the second polymeric material is in at least some of the pores of the first polymeric material. In some methods, the first polymeric material and the second polymeric material are soluble in the same solvent.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: January 8, 2013
    Assignee: Porex Corporation
    Inventors: Thomas H. Ramsey, Jerry Dean Raney, Jacob Shorr, Guoqiang Mao
  • Publication number: 20120318139
    Abstract: This application discloses porous self-sealing media comprising a sintered mixture of an absorbent material and a thermoplastic. The self-sealing media block passage of organic solvents or organic solvents in aqueous mixtures, wherein the organic solvents are at concentrations greater than about 40%. The self-sealing media also block acidic solutions. The self-sealing media are useful in a variety of applications such as a pipette tip filter, in line filter, vent, non-mechanical check valve, safety valve, and suction canister.
    Type: Application
    Filed: June 5, 2012
    Publication date: December 20, 2012
    Applicant: Porex Corporation
    Inventor: Guoqiang Mao
  • Patent number: 8187534
    Abstract: The present invention provides porous barrier compositions comprising color change indicators and methods of making and using the same.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: May 29, 2012
    Assignee: Porex Corporation
    Inventor: Guoqiang Mao
  • Patent number: 8141717
    Abstract: The present invention provides sintered polymeric materials and methods of making the same which are useful in a variety of applications. In one embodiment, the present invention provides a sintered polymeric material comprising at least one plastic and at least one elastomer.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: March 27, 2012
    Assignee: Porex Corporation
    Inventors: James P. Wingo, Michael E. Witover, Guoqiang Mao, Andre Maertens, Gerald Kunth, Daniel George Fullerton, Ike Iaokim Haldopoulos, Take Huat Tan, Deborah B. Reed
  • Publication number: 20110198301
    Abstract: Disclosed herein are modular filter assemblies having a plurality of stacked filter plates formed from a porous material. The filter plate can comprise a planar base portion from which a convoluted ridge wall, having a ridge outer side surface, a ridge inner surface, and a top ridge surface extends. A plurality of fluid inlet troughs and a plurality if fluid outlet troughs are defined by the ridge wall. Adjoining filter plates form a plurality of fluid inlet cavities defined by the fluid inlet trough of one filter plate and a portion of the bottom surface of the adjoining filter plate; and a plurality of fluid outlet cavities defined by the fluid outlet trough of the one filter plate and a portion of the bottom surface of the adjoining filter plate. In use, the plurality of fluid inlet cavities are in filtered communication with the plurality of fluid outlet cavities.
    Type: Application
    Filed: April 25, 2011
    Publication date: August 18, 2011
    Applicant: Porex Corporation
    Inventors: Dean Haldopoulos, Benjamin Hirokawa
  • Patent number: 7985343
    Abstract: Disclosed herein are modular filter assemblies having a plurality of stacked filter plates formed from a porous material. The filter plate can comprise a planar base portion from which a convoluted ridge wall, having a ridge outer side surface, a ridge inner surface, and a top ridge surface extends. A plurality of fluid inlet troughs and a plurality if fluid outlet troughs are defined by the ridge wall. Adjoining filter plates form a plurality of fluid inlet cavities defined by the fluid inlet trough of one filter plate and a portion of the bottom surface of the adjoining filter plate; and a plurality of fluid outlet cavities defined by the fluid outlet trough of the one filter plate and a portion of the bottom surface of the adjoining filter plate. In use, the plurality of fluid inlet cavities are in filtered communication with the plurality of fluid outlet cavities.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: July 26, 2011
    Assignee: Porex Corporation
    Inventors: Dean Haldopoulos, Benjamin Hirokawa
  • Publication number: 20110033617
    Abstract: The invention provides composite porous materials in which a second material is fused to and/or is in the pores and/or is fused directly to some of the pore walls of a porous first material. The invention also provides methods of filtering a fluid using these composite porous materials and methods of manufacturing the composite porous materials.
    Type: Application
    Filed: October 14, 2010
    Publication date: February 10, 2011
    Applicant: Porex Corporation, Inc.
    Inventors: Thomas H. Ramsey, Jerry Dean Raney, Jacob Shorr, Guoqiang Mao
  • Patent number: 7833615
    Abstract: The invention provides composite porous materials in which a second material is fused to and/or is in the pores and/or is fused directly to some of the pore walls of a porous first material. The invention also provides methods of filtering a fluid using these composite porous materials and methods of manufacturing the composite porous materials.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: November 16, 2010
    Assignee: Porex Corporation
    Inventors: Thomas H. Ramsey, Jerry Dean Raney, Jacob Shorr, Guoqiang Mao
  • Patent number: 7795346
    Abstract: Sintered porous materials comprising high melt-flow rate polymers are described, as are methods of making and using the same. Specific materials comprise a high melt-flow rate polymer and a thermally conductive material.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: September 14, 2010
    Assignee: Porex Corporation
    Inventors: Timothy A. Martin, Guoqiang Mao
  • Publication number: 20100176210
    Abstract: This invention provides a hydrophilic porous fiber wick for delivering vaporizable material into the atmosphere, such as a room environment. The wick may be biodegradable. The wick is comprised of a sintered synthetic bicomponent fibers, optionally combined with synthetic monocomponent fibers or natural monocomponent fibers. The wick is optionally treated with plasma or finishing agents for improved hydrophilicity. The wick can wick aqueous and/or non-aqueous-based fragrances or other vaporizable materials and evaporate them into the air without the use of heat, convection air, or atomization.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 15, 2010
    Applicant: Porex Corporation
    Inventors: Michael Arthur, Kevin Sporrer, Guoqiang Mao
  • Publication number: 20100104845
    Abstract: The present invention provides sintered composite polymeric materials and methods of making and using the same. The sintered composite polymeric materials are made by sintering composite particles comprising a polytetrafluoroethylene component and a carbonaceous component, wherein the carbonaceous component is dispersed throughout the polytetrafluoroethylene component.
    Type: Application
    Filed: October 23, 2009
    Publication date: April 29, 2010
    Applicant: Porex Corporation
    Inventors: Andrew James MacLennan, Tripp Augustus Avett, Xingguo Li, Guoqiang Mao
  • Patent number: 7674517
    Abstract: The invention provides composite porous materials in which a second material is fused to and/or is in the pores and/or is fused directly to some of the pore walls of a porous first material. The invention also provides methods of filtering a fluid using these composite porous materials and methods of manufacturing the composite porous materials.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: March 9, 2010
    Assignee: Porex Corporation
    Inventors: Thomas H. Ramsey, Jerry Dean Raney, Jacob Shorr, Guoqiang Mao