Patents Represented by Attorney, Agent or Law Firm Lucy C. Weiss
  • Patent number: 6511701
    Abstract: A method of coating a polymer substrate with a dry composition comprising particles is provided. The particles have a Mohs hardness between 1 and 2.5 and preferably a largest dimension of less than 100 microns. The particles are buffed on the substrate with an applicator which moves in a manner parallel to the surface of the substrate.
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: January 28, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Ranjith Divigalpitiya, Gabriella Miholics, David C. Chambers
  • Patent number: 6491983
    Abstract: Normally liquid, omega-hydrofluoroalkyl ether compounds (and selected mixtures thereof) have a saturated perfluoroaliphatic chain of carbon atoms interrupted by one or more ether oxygen atoms. The compounds can be prepared, e.g., by decarboxylation of the corresponding fluoroalkyl ether carboxylic acids and are useful, e.g., in cleaning and drying applications.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: December 10, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: George G. I. Moore, Richard M. Flynn, Miguel A. Guerra, John G. Owens
  • Patent number: 6476114
    Abstract: The invention provides a method of making a film comprising the steps of: (A) providing a film comprising a layer of thermoplastic polymer having dispersed therein a fluorochemical hydrophilicity imparting compound according to the formula: Rf—Q—Z—X—T, wherein Rf represents a partially or fully fluorinated aliphatic group having at least 3 carbon atoms, Q is a linking group or a covalent bond, Z is a poly(oxyalkylene) group, X is an oxygen atom or NR wherein R is a hydrogen atom or an alkyl or aryl group, and T is a hydrogen atom or an organic group having no more than 6 carbon atoms; (B) applying a coating comprising at least one non-volatile component on said film; and (C) when said coating contains volatile components, drying said coating to remove said volatile components from said coating. Further provided are single- and multi-layer films.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: November 5, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Bart Goeman, Rolf D. Spielmann
  • Patent number: 6436578
    Abstract: An electrode composition that includes (a) an electrochemically active metal element which, prior to cycling, is in the form of an intermetallic compound or an elemental metal and (b) a non-electrochemically active metal element. The electrode compositions have high initial capacities that are retained even after repeated cycling. The electrode compositions also exhibit high coulombic efficiencies.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: August 20, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Robert L. Turner, Donald J. McClure, Larry J. Krause, Mary M. Buckett, Jeffery R. Dahn, Ou Mao
  • Patent number: 6428933
    Abstract: A lithium ion battery that includes: (a) a cathode; (b) an anode in the form of a thin film which, when lithiated, does not exhibit sustained self-heating at temperatures up to about 100° C.; and (c) an electrolyte separating the anode and the cathode. The battery has a capacity of at least 600 milliamp-hours, a specific energy of at least 100 watt-hours/kg, and a volumetric energy of at least 250 watt-hours/liter.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: August 6, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Leif Christensen, Robert L. Turner
  • Patent number: 6426025
    Abstract: The present invention provides a process for obtaining a fiber comprising the steps of (a) melt extruding a mixture of a thermoplastic polymer and hydrophilicity imparting compound to form a plurality of filaments; (b) applying a spin finish to said filaments; and (c) spinning said filaments into a fiber; wherein said spin finish comprises fluorochemical. The invention also provides fibers, textiles and carpet prepared in accordance with the invention.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: July 30, 2002
    Assignee: 3M Innovative Properties Company
    Inventor: Bart Goeman
  • Patent number: 6380289
    Abstract: A thermoplastic composition comprises (a) a major amount of a semi-crystalline thermoplastic first polymer; (b) an amount of a fluoroaliphatic radical-containing surface-modifying additive sufficient to modify surface properties of articles made of the composition; and (c) a minor amount of a second thermoplastic polymer sufficient to enhance the effects of the surface-modifying additive.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: April 30, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Delton R. Thompson, Jr., Thomas P. Klun
  • Patent number: 6372829
    Abstract: An antistatic composition comprises (a) at least one ionic salt consisting of a nonpolymeric nitrogen onium cation and a weakly coordinating fluoroorganic anion, the conjugate acid of the anion being a superacid; and (b) at least one thermoplastic polymer. The composition exhibits good antistatic performance over a wide range of humidity levels.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: April 16, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: William M. Lamanna, Thomas P. Klun, Kathleen A. Hachey, Alan D. Fanta
  • Patent number: 6372341
    Abstract: A tamper-indicating article comprises (a) a pressure-sensitive adhesive film or pressure-sensitive adhesive-coated tape that can be removed, without exhibiting cohesive failure, from a substrate surface (e.g., an automobile windshield) by stretching the film or tape; and (b) at least one damageable layer that shows cohesive or intralayer failure when an attempt is made to remove the article from the substrate surface. The article is especially useful for application to valuable, non-disposable substrates and can be removed therefrom without substrate damage.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: April 16, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Dieter Jung, Pauline E. Ludwig
  • Patent number: 6361713
    Abstract: Normally liquid, omega-hydrofluoroalkyl ether compounds (and selected mixtures thereof) have a saturated perfluoroaliphatic chain of carbon atoms interrupted by one or more ether oxygen atoms. The compounds can be prepared, e.g., by decarboxylation of the corresponding fluoroalkyl ether carboxylic acids and are useful, e.g., in cleaning and drying applications.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: March 26, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: George G. I. Moore, Richard M. Flynn, Miguel A. Guerra, John G. Owens
  • Patent number: 6350823
    Abstract: A pavement marking composition comprises (a) a polyfunctional ethylenically unsaturated polymer selected from the group consisting of polyfunctional ethylenically unsaturated polyurethanes, polyureas, polythiocarbamates, polythiocarbamateurethanes, polythiocarbamateureas, and polyurethaneureas comprising at least one chain extender-derived segment and at least one polycarbonate, polyether, or polyester segment; and (b) at least one ethylenically unsaturated monomer. The composition can be easily applied, cures in a reasonable amount of time at any of a wide range of commonly-encountered temperatures, and provides pavement markings that exhibit both improved cold impact resistance and improved wear resistance.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: February 26, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Siegfried Rainer Goeb, Anja Christina Rohmann
  • Patent number: 6351537
    Abstract: A verifiable holographic article comprises a substrate comprising (a) at least one hologram; and (b) at least one covert image that is convertible to an overt image using a decoding sampling device, e.g., a photocopier, that produces an aliasing or moire effect. The article cost-effectively provides both “first line” and “second line” security features and can be easily, quickly, and safely verified or authenticated.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: February 26, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Sergiy Dovgodko, Domenica Kirchmeyer
  • Patent number: 6340719
    Abstract: A process for crosslinking a melt-processed polymer composition comprises the steps of (a) forming a polymerizable mixture comprising (i) at least one monoethylenically-unsaturated monomer or prepolymer and (ii) at least one monoethylenically-unsaturated, blocked mono- or polyisocyanate that is thermally stable at a selected melt processing temperature range and that is thermally deblockable at and above a deblocking temperature that is higher than the selected melt processing temperature range; (b) exposing the polymerizable mixture to transmissive energy to polymerize the mixture to form a polymer composition comprising polymerized units derived from the blocked mono- or polyisocyanate; (c) melt processing the polymer composition at the selected melt processing temperature range to form a melt-processed polymer composition; and (d) during melt processing or thereafter, increasing the temperature of the melt-processed polymer composition to the deblocking temperatures in the presence of at least one isocyana
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: January 22, 2002
    Assignee: 3M-Innovative Properties Company
    Inventors: Siegfried R. Goeb, Andreas H. Graichen
  • Patent number: 6291417
    Abstract: A process for removing contaminants from the surface of a substrate comprises contacting the substrate with a cleaning composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalkylene-containing perfluoroalkane compound, the compound optionally containing additional catenary heteroatoms. The compounds exhibit good solvency properties while being environmentally acceptable.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: September 18, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Richard M. Flynn, George G. I. Moore, John G. Owens
  • Patent number: 6262180
    Abstract: This invention describes hydrophobic and oleophobic fibers, films and molded articles comprising synthetic organic polymer wherein dispersed within the fiber, fabric or molded article and present at the surface of the fiber, fabric or molded article are fluorochemical compounds. Method of preparing such fibers, films and molded articles, as well as articles made therefrom also are disclosed.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: July 17, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas P. Klun, Alton J. Gasper, John A. Temperante
  • Patent number: 6255017
    Abstract: An electrode composition that includes an electrode material consisting essentially of a plurality of electrochemically active metal elements in which the electrode material has a microstructure comprising these elements in the form of a mixture that is essentially free of domains measuring greater than about 1000 angstroms.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: July 3, 2001
    Assignee: 3M Innovative Properties Co.
    Inventor: Robert L. Turner
  • Patent number: 6248889
    Abstract: A process for preparing a fluoride from its corresponding alcohol comprises the steps of (a) forming a mixture comprising (i) at least one fluorinated, saturated aliphatic or alicyclic sulfonyl fluoride (for example, perfluorobutanesulfonyl fluoride) and (ii) at least one primary or secondary alcohol; and (b) adding a molar excess of at least one strong, aprotic, non-nucleophilic, hindered, double bond-containing, organic base (for example, 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU)) to the mixture.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: June 19, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Patricia M. Savu, Daniel C. Snustad
  • Patent number: 6214253
    Abstract: Normally liquid, omega-hydrofluoroalkyl ether compounds (and selected mixtures thereof) have a saturated perfluoroaliphatic chain of carbon atoms interrupted by one or more ether oxygen atoms. The compounds can be prepared, e.g., by decarboxylation of the corresponding fluoroalkyl ether carboxylic acids and are useful, e.g., in cleaning and drying applications.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: April 10, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: George G. I. Moore, Richard M. Flynn, Miguel A. Guerra, John G. Owens
  • Patent number: 6204299
    Abstract: Normally liquid, omega-hydrofluoroalkyl ether compounds (and selected mixtures thereof) have a saturated perfluoroaliphatic chain of carbon atoms interrupted by one or more ether oxygen atoms. The compounds can be prepared, e.g., by decarboxylation of the corresponding fluoroalkyl ether carboxylic acids and are useful, e.g., in cleaning and drying applications.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: March 20, 2001
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: George G. I. Moore, Richard M. Flynn, Miguel A. Guerra, John G. Owens
  • Patent number: 6203944
    Abstract: An electrode for a lithium battery that includes (a) an electrochemically active metal element which, prior to cycling, is in the form of an intermetallic compound or an elemental metal and (b) a non-electrochemically active metal element. The electrode have high initial capacities that are retained even after repeated cycling. The electrode also exhibit high coulombic efficiencies.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: March 20, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Robert L. Turner, Donald J. McClure, Larry J. Krause, Mary M. Buckett, Jeffery R. Dahn, Ou Mao