Patents Represented by Attorney, Agent or Law Firm Lorraine R. Sherman
  • Patent number: 5912377
    Abstract: A composition of matter comprises an aromatic cyanate ester silane comprising at least one cyanate ester group and at least one hydrolyzable silyl group. In the presence of a cyanate ester resin the aromatic cyanate ester silane acts as a coupling agent to improve the adhesion of the cyanate ester to a substrate. The curable compositions are useful as reinforced composites, and as adhesive and coating compositions.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: June 15, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Joyce B. Hall, Kim M. Vogel, Fred B. McCormick, Hiroyaki Yamaguchi
  • Patent number: 5863664
    Abstract: A composition of matter includes a polymerizable mixture comprising 1 to 99 weight percent of a first monomer and an initiator therefor, the first monomer being one of 1) at least one free-radically polymerizable monomer or 2) at least one cyanate ester monomer, and 99 to 1 weight percent of a second monomer and an initiator therefor, the second monomer being the member of 1) or 2) that is not selected as the first monomer, wherein the curative for the cyanate ester is a transition metal-containing organometallic compound curing agent and the curative for the free-radically polymerizable monomer is a free-radical generating curing agent or a transition metal-containing organometallic compound.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: January 26, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Fred B. McCormick, David J. Drath, Ilya Gorodisher, Michael A. Kropp, Michael C. Palazzotto, Melville R. V. Sahyun
  • Patent number: 5834330
    Abstract: A II-VI semiconductor device is fabricated using a selective etchant in the form of aqueous solution of HX where X is Cl or Br. The II-VI semiconductor device is composed of a number of layers. Selective etching can be enabled by introducing Mg into one of the semiconductor layers. The resultant device may include a semiconductor layer containing Mg.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: November 10, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Michael A. Haase, Paul F. Baude, Thomas J. Miller
  • Patent number: 5818859
    Abstract: A II-VI compound semiconductor laser diode includes a plurality of II-VI semiconductor layers forming a pn junction supported by a single crystal GaAs semiconductor substrate. The layers formed in the pn junction include a first cladding layer of a first conductivity type, a second cladding layer of a second conductivity type, and at least a first guiding layer between the first and second cladding layers. A quantum well active layer is positioned within the pn junction. Electrical energy is coupled to the laser diode by first and second electrodes. Various layers in the laser diode are formed using Be.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: October 6, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Thomas J. Miller, Michael A. Haase, Paul F. Baude, Michael D. Pashley
  • Patent number: 5767534
    Abstract: A II-VI semiconductor device includes a stack of semiconductor layers. An ohmic contact is provided that electrically couples to the stack. The ohmic contact has an oxidation rate when exposed to an oxidizing substance. A passivation capping layer overlies the ohmic contact and has an oxidation rate that is less than the oxidation rate of the ohmic contact.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: June 16, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Fen-Ren Chien, Michael A. Haase, Thomas J. Miller
  • Patent number: 5760152
    Abstract: Insoluble supports are prepared which possess high surface areas and efficiently dispersed isocyanate groups. These reactive supports are useful for covalently binding proteins which preferably are enzymes and provide catalysts for conducting organic reactions.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: June 2, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Steven M. Heilmann, Gary J. Drtina, Louis C. Haddad, Frederick W. Hyde, Dean M. Moren, Robert A. Pranis
  • Patent number: 5756633
    Abstract: Water-dispersible sulfopoly(ester-urethane) compositions which comprise, in their backbone, at least one arylene or alkylene sulfonic acid group or a salt thereof, the polymer being terminated by at least one hydrolyzable silyl group. The compositions of the invention preferably have a sulfonate equivalent weight of about 500 to about 12,000 g/equivalent and a number average molecular weight less than 50,000. Compositions of the invention have utility as durable treatments such as low surface energy coatings that exhibit release towards adhesive materials, grease, and oils.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: May 26, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Wayne K. Larson
  • Patent number: 5750641
    Abstract: An angularity enhancement layer in a liquid crystal display, which display comprises a liquid crystal cell, wherein the angularity enhancement layer includes a negative birefringent polyimide layer comprising a plurality of structural units having pendant fluorene groups, said angularity enhancement layer being disposed on at least one surface of said liquid crystal cell. A liquid crystal display can comprise an angularity enhancement construction of the invention which comprises a polyimide layer.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: May 12, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Stephen A. Ezzell, Hassan Sahouani, Ernest L. Thurber
  • Patent number: 5747626
    Abstract: A pavement marking composition comprises a sulfopoly(ester-urethane) polymer which comprises in its backbone at least one non-terminal arylene or alkylene group comprising a pendant sulfonic acid group or salt thereof, the polymer of said pavement marking composition being terminated by at least one hydrolyzable silyl group. A method of making the composition is disclosed. The pavement marking composition can further comprise at least one of pigments, optical elements, fillers, or other adjuvants. Particularly desirable adjuvants include optical elements, particularly retroreflective elements, skid-resistant particles, and pigments.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: May 5, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Larry R. Krepski, Steven M. Heilmann, Daniel E. Mickus, Wayne K. Larson, Mark T. Gibson, Mark D. Purgett, Christopher J. Rueb, Howell K. Smith, II
  • Patent number: 5744557
    Abstract: A composition of matter including a polymerizable mixture comprising 1 to 99 weight percent of a first monomer and an initiator therefor, the first monomer being one of 1) at least one free-radically polymerizable monomer or 2) at least one cyanate ester monomer, and 99 to 1 weight percent of a second monomer and an initiator therefor, the second monomer being the member of 1) or 2) that is not selected as the first monomer, wherein the curative for the cyanate ester is a transition metal-containing organometallic compound curing agent and the curative for the free-radically polymerizable monomer is a free-radical generating curing agent or a transition metal-containing organometallic compound.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: April 28, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Fred B. McCormick, David J. Drath, Ilya Gorodisher, Michael A. Kropp, Michael C. Palazzotto, Melville R. V. Sahyun
  • Patent number: 5744574
    Abstract: Isomaleimides and polyisomaleimides can be prepared by a method comprising the steps in sequence: admixing a maleamic acid or polymaleamic acid with an acid halide, reacting the admixture with a tertiary amine at a temperature sufficiently low to suppress the formation of a maleimide, and isolating the resulting isomaleimide or polyisomaleimide. Polymerization of a polyisomaleimide with a polynucleophilic monomer (polythiol, polyol, polyamine) produces novel polymers.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: April 28, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Stephen A. Ezzell, Richard G. Hansen, Gregory J. Anderson
  • Patent number: 5738790
    Abstract: A solid phase extraction or chromatographic medium comprises a porous nonwoven fibrous matrix comprising at least one of polytetrafluoroethylene and blown microfibers, and sorptive or reactive hydrophobic siliceous molecular sieve particulates enmeshed in said matrix, the ratio of molecular sieves to matrix being in the range of 40:1 to 1:40.
    Type: Grant
    Filed: March 5, 1997
    Date of Patent: April 14, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Donald F. Hagen, Paul E. Hansen, Craig G. Markell
  • Patent number: 5726524
    Abstract: An electric field emission device includes an electrode that includes a layer having a dense array of discrete, solid microstructures disposed on at least a portion of one or more surfaces of a substrate, the microstructures having an areal number density of greater than 10.sup.7 /cm.sup.2, the microstructures being individually conformally overcoated with one or more layers of an electron emitting material, the overcoated electron emitting material being disposed on at least a portion of the microstructures and have a surface morphology which is nanoscopically rough. A method for preparing the electrode used in the invention is discussed.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: March 10, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Mark K. Debe
  • Patent number: 5709948
    Abstract: A curable composition comprises 0.1 to 50 weight percent of a curable epoxy resin, the weight percent being based on the total resin composition, an effective mount of a curative for the curable epoxy resin, 50 to 99.9 weight percent of at least one of a fully prepolymerized hydrocarbon polyolefin resin and a fully prepolymerized functionalized polyolefin resin, the weight percent being based on the total resin composition, wherein said hydrocarbon polyolefin is present in the range of 25 to 99.9 weight percent of the total resin composition and said functionalized polyolefin is present in the range of 0 to 49.9 weight percent of the total resin composition, said composition being free of epoxidized natural and/or synthetic rubber.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: January 20, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mario A. Perez, David A. Ylitalo, Thomas M. Clausen, Robert J. DeVoe, Kevin E. Kinzer, Michael D. Swan
  • Patent number: 5702610
    Abstract: A sheet article for solid phase extraction or solid phase reaction comprises at least one sorptive polymer pulp, and optionally at least one of sorptive and reactive particulate. The article can be used in a method of separating an analyte from a fluid comprising the step of passing a fluid comprising an analyte through a sheet article comprising poly(p- or m-phenylenephthalamide) pulp, the pulp optionally having incorporated therein solid phase particulates, the sheet article being capable of isolating the analyte from the fluid.
    Type: Grant
    Filed: January 9, 1996
    Date of Patent: December 30, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Donald F. Hagen, Simon S. Fung, Paul E. Hansen
  • Patent number: 5700375
    Abstract: An efficient method removes oxidants from fluids (gases and liquids, particularly air) by means of solid phase extraction or reaction. The solid phase extraction or reaction medium comprises a porous, preferably fibrous, polymeric, membrane or web in which are incorporated oxidant scavenger particulates. Typical oxidants removed in the method include ozone, oxides of nitrogen, halogen, and peroxides. The method of the invention protects organic analytes in analytical applications and removes oxidants in remediation applications by use of oxidant scavenger particles in porous membranes.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: December 23, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Donald F. Hagen, Kenneth M. Hart, Glenn D. Johnson
  • Patent number: 5688370
    Abstract: A sheet article for solid phase extraction or solid phase reaction has at least one sorptive polymer pulp at least one of sorptive and reactive particulate. The article can be used in a method of separating an analyte from a fluid by passing a fluid containing an analyte through a sheet article containing poly(p- or m-phenylenephthalamide) pulp and solid phase particles.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: November 18, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Donald F. Hagen, Simon S. Fung, Paul E. Hansen
  • Patent number: 5679779
    Abstract: Insoluble supports are prepared which possess high surface areas and efficiently dispersed isocyanate groups. These reactive supports are useful for covalently binding proteins which preferably are enzymes and provide catalysts for conducting organic reactions.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: October 21, 1997
    Assignee: Minnesota Mining and Manufacturing
    Inventors: Steven M. Heilmann, Gary J. Drtina, Louis C. Haddad, Frederick W. Hyde, Dean M. Moren, Robert A. Pranis
  • Patent number: 5679754
    Abstract: A water dispersible polymeric composition comprises at least one sulfo group containing segment, which group comprises at least one urethane or urea connecting group, said composition also comprising at least one hydrophobic segment, which segment comprises at least one urethane or urea connecting group. The composition when dried can provide a coating on a substrate or an article having low surface energy and preferably ink receptive properties. The article can provide release capabilities towards adhesives, particularly pressure sensitive adhesives.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: October 21, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Wayne K. Larson, Richard E. Bennett, Nicole L. Franchina
  • Patent number: 5672637
    Abstract: The present invention provides an energy polymerizable composition comprising at least one epoxy monomer or at least one vinyl ether monomer and an initiation system therefor, the initiation system comprising at least one organometallic complex salt and at least one stabilizing additive. The cured composition provides useful articles or coated articles.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: September 30, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Wayne S. Mahoney, Michael C. Palazzotto