Patents by Inventor Phat T. Pham

Phat T. Pham 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: 7517604
    Abstract: An electrolyte membrane is formed by an acidic polymer and a low-volatility acid that is fluorinated, substantially free of basic groups, and is either oligomeric or non-polymeric.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: April 14, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, James M. Larson, Phat T. Pham, Matthew H. Frey, Gregory M. Haugen, William M. Lamanna
  • Publication number: 20090053589
    Abstract: Disclosed are electrochemical cells that include electrodes comprising an electrolyte comprising a vinylene carbonate or a halogenated ethylene carbonate, composite electrodes, and a binder.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 26, 2009
    Inventors: Mark N. Obrovac, Leif Christensen, Phat T. Pham, William M. Lamanna
  • Publication number: 20080206631
    Abstract: Electrochemical cells are disclosed that include electrodes comprising a composite that includes an active material, graphite and a binder. The amount of graphite in the composite is greater than about 20 volume percent of the total volume of the active material and graphite in the composite. The porosity of the composite is less than about 20%. The cells also comprise an electrolyte that includes a vinylene carbonate derivative or a halogenated ethylene carbonate derivative.
    Type: Application
    Filed: July 12, 2007
    Publication date: August 28, 2008
    Inventors: Leif Christensen, Mark N. Obrovac, Phat T. Pham, William M. Lamanna
  • Patent number: 6740413
    Abstract: An antistatic composition comprising (a) at least one polymeric salt consisting of (i) at least one polyoxyalkylene ammonium cation, and (ii) a fluorinated anion. The composition exhibits good antistatic characteristics.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: May 25, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas P. Klun, William M. Lamanna, Phat T. Pham
  • Publication number: 20030114560
    Abstract: The present invention is directed to an antistatic pressure sensitive adhesive. The antistatic pressure sensitive adhesive comprises a pressure sensitive adhesive, and an antistatic agent comprising at least one organic salt. Certain embodiments of the antistatic pressure sensitive adhesive also have a luminous transmission of greater than about 89% according to ASTM D 1003-95. Additional embodiments of the antistatic pressure sensitive adhesive have a haze of less than about 5% according to ASTM D 1003-95, and in specific embodiments the haze is less than about 2% according to ASTM D 1003-95.
    Type: Application
    Filed: August 1, 2002
    Publication date: June 19, 2003
    Inventors: Jie Yang, Thomas P. Klun, Phat T. Pham, Diana M. Eitzman, Jennings B. Campbell
  • Publication number: 20030099802
    Abstract: An antistatic composition comprising (a) at least one polymeric salt consisting of (i) at least one polyoxyalkylene ammonium cation, and (ii) a fluorinated anion. The composition exhibits good antistatic characteristics.
    Type: Application
    Filed: November 5, 2001
    Publication date: May 29, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Thomas P. Klun, William M. Lamanna, Phat T. Pham
  • Patent number: 6420607
    Abstract: Compositions containing conductivity enhancers, which are capable of being coated onto a substrate by means of electrostatic assistance. The compositions comprise one or more cationically polymerizable monomer(s), one or more cationic initiator(s), and one or more non-volatile conductivity enhancer(s) having anionic and cationic portions which are soluble in the monomer(s) and which do not interfere with cationic polymerization wherein the anionic portion is a non-coordinating carbon-containing anion. The compositions may further comprise one or more dissociation enhancing agent(s), oligomer(s) or polymer(s), preferably co-reactive, free-radically curable monomer(s), free-radical generating initiator(s), leveling agents, and other additives or adjuvants to impart specific properties to the polymerized composition.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: July 16, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, Phat T. Pham
  • Patent number: 6280883
    Abstract: Electrolyte compositions and electrochemical systems containing such compositions are described where the electrolyte includes in a matrix material a combination of a conductive salt and a bis(perfluoroalkanesulfonyl)imide surfactant salt. The compositions improve wettability of electrodes and separators while maintaining and improving conductivity, stability, and compatibility with other cell components.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: August 28, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: William M. Lamanna, Robert B. Loch, Alan D. Fanta, Steven D. Boyd, Hiroshi Shimada, Phat T. Pham, Bryan J. Johnson
  • Patent number: 6063522
    Abstract: Battery electrolytes are described which include particular imide and methide conductive salts having mixed fluorocarbon and hydrocarbon groups. These salts exhibit excellent conductivity in electrolytes and are described as useful in electrochemical cells, such as lithium batteries.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: May 16, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, Phat T. Pham