Patents Represented by Attorney, Agent or Law Firm Lorraine R. Sherman
  • Patent number: 5343544
    Abstract: An integrated optical coupler comprises a substrate with fiber-aligning grooves and waveguiding channels and a covering with complementary grooves and, optionally, channels. These couplers can be made from reproducible masters and electroplated molds made from those masters.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: August 30, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gary T. Boyd, Tzu-Chen Lee, Bruce A. Sventek, Elisa M. Cross, Laura A. Weller-Brophy
  • Patent number: 5340746
    Abstract: Composite reactive articles are useful for quantifying cyanide ions in solution. The composite reactive articles can be porous reactive supports comprising an inert substrate having immobilized thereon finely divided gold. The porous reactive supports can be particulate, porous fibrous membranes, or solution-cast membranes. Alternatively, the composite reactive articles can comprise porous fibrous membranes having enmeshed therein the aforementioned porous supports which can be in particulate or fibrous forms.
    Type: Grant
    Filed: January 8, 1993
    Date of Patent: August 23, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Donald F. Hagen, Louis C. Haddad, Robert E. Perkins, Craig G. Markell
  • Patent number: 5336742
    Abstract: Azlactone-functional polymer supports are useful reactive supports for the attachment of functional materials to provide novel adduct beads. The adduct beads are useful as complexing agents, catalysts, polymeric reagents, chromatographic supports, and as enzyme- or other biologically active supports. Novel carboxylate-functional polymer beads, are intermediates in the preparation of the azlactone-functional beads.Azlactone-functional supports have units of the formula: ##STR1## wherein R.sup.1 is H or CH.sub.3,R.sup.2 and R.sup.3 independently can be an alkyl group having 1 to 14 carbon atoms, a cycloalkyl group having 3 to 14 carbon atoms, an aryl group having 5 to 12 ring atoms, an arenyl group having 6 to 26 carbon and 0 to 3 S, N, and nonperoxidic O heteroatoms, or R.sup.2 and R.sup.3 taken together with the carbon to which they are joined can form a carbocyclic ring containing 4 to 12 ring atoms, andn is an integer 0 or 1,the azlactone functional supports having 0.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: August 9, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Steven M. Heilmann, Jerald K. Rasmussen, Larry R. Krepski, Dean S. Milbrath, Patrick L. Coleman
  • Patent number: 5328758
    Abstract: A particle loaded, porous, fibrous compressed or fused article comprises a nonwoven fibrous polymeric web, which preferably is thermoplastic, melt-extrudable, and pressure-fusible blown microfibrous web, and sorptive particles enmeshed in said web, the particle loaded fibrous article has a Gurley number of at least two seconds, and the article is useful in separation science. A method of preparation of the article and method of use is also disclosed.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: July 12, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Craig G. Markell, Donald F. Hagen, Paul E. Hansen, Nicholas R. Baumann
  • Patent number: 5328756
    Abstract: A composite article comprising a fibrillated polytetrafluoroethylene (PTFE) matrix, electrically conductive particles, and energy expandable, electrically nonconductive hollow polymeric particles, which composite is conductive and allows for the flow of electricity and which, upon attaining a temperature which causes expansion of the expandable polymeric particles, becomes insulating and causes the flow of electricity to cease. The articles are thin and can be used as electrical circuit breaking elements.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: July 12, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robin E. Wright, William V. Balsimo
  • Patent number: 5326621
    Abstract: An energy polymerizable composition comprises at least one ethylenically-unsaturated monomer, one of polyurethane precursors, and at least one epoxy monomer, and a curing agent comprising an organometallic compound, and an onium salt.
    Type: Grant
    Filed: August 19, 1992
    Date of Patent: July 5, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Michael C. Palazzotto, Katherine A. Brown-Wensley, Robert J. DeVoe
  • Patent number: 5321084
    Abstract: A second order nonlinear optically-active azo monomer comprising a benzimidazole moiety. The monomers can be incorporated into both linear and crosslinked polymers useful in electrooptical devices.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: June 14, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Elisa M. Cross, Cecil V. Francis
  • Patent number: 5319219
    Abstract: A single quantum well II-VI laser diode without semiconductor cladding layers includes a pn junction formed by overlaying light-guiding layers of p-type and n-type ZnSe on an n-type GaAs substrate. A CdSe/ZnSe short-period strained-layer superlattice single quantum well active layer is positioned between the guiding layers. An Au electrode overlays the p-type guiding layer opposite the single quantum well active layer. The guiding layers have thicknesses which enable the substrate and Au electrode to confine the light beam generated by the device within the active layer and the guiding layers.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: June 7, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Hwa Cheng, James M. DePuydt, Michael A. Haase, Jun Qiu
  • Patent number: 5314975
    Abstract: The present invention provides novel fluorinated acrylamide silane monomers which are useful as adhesion promoting agents in optical fiber cladding compositions. Polymerization of the novel monomers, optionally in the presence compatible ethylenically-unsaturated monomers, provides homopolymers and copolymers which are useful as non-wetting agents.
    Type: Grant
    Filed: January 28, 1993
    Date of Patent: May 24, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Stefan A. Babirad, Dean M. Moren, Steven M. Heilmann, Larry R. Krepski, Jerald K. Rasmussen
  • Patent number: 5310604
    Abstract: A method for monitoring the coating weight, uniformity, defects or markings present in a coating of a composition applied to a substrate comprises the steps:a) providing a substrate with a functional coating of a composition comprising an effective amount of uvescer that absorbs radiant energy, i.e., has an excitation energy, of wavelength .lambda..sub.1 and emits radiant energy of wavelength .lambda..sub.2 ;b) scanning the coating with radiant energy having a wavelength within wavelength .lambda..sub.1 ;c) detecting the radiant energy of wavelength .lambda..sub.2 emitted by the coating; andd) optionally, correlating the emitted radiant energy to independently measured standard coating weights or thicknesses, of the coating so as to measure coating weight, thickness, uniformity, defects, or markings.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: May 10, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kurt C. Melancon, George V. D. Tiers
  • Patent number: 5296561
    Abstract: A pressure-sensitive adhesive comprises a moisture-curable polymer comprising a polymer prepared by polymerization of at least one .alpha.-olefin monomer, said polymer containing hydrolyzable or condensable silyl groups and having a weight average molecular weight of at least 30,000. The pressure-sensitive adhesive can be hot-melt coated without emitting volatiles and then can adhere aggressively to both polar and nonpolar substrates. The PSA has good internal strength at high temperatures.
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: March 22, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gaddam N. Babu, James R. Peterson, Sehyun Nam
  • Patent number: 5296566
    Abstract: Polymerization of ring-strained cyclic olefins takes place in the presence of a one-part or two-part catalyst which is air and moisture stable and which comprises a transition metal-containing compound.The one-part transition metal-containing catalyst is selected from the group consisting of(a) compounds of the formula(L.sup.1)(L.sup.2)QwhereinQ represents Mo or W;L.sup.1 represents one to six CO (carbonyl) ligands;L.sup.2 represents none to 5 ligands, each of which is a non-ionic compound or unit of a polymer which can be the same or different, each contributes two, four, or six electrons to the metal and is different from L.sup.1 ; wherein the sum of the valence electrons of Q and the electrons contributed by the ligands L.sup.1 and L.sup.2 is 18,(b) at least one of cationic ruthenium and osmium-containing organometallic salts having at least one polyene ligand, and(c) [Ir(RO.sub.2 CHC.dbd.CHCO.sub.2 R).sub.2 Cl].sub.2 wherein each R independently is hydrogen or lower alkyl (C.sub.1 to C.sub.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: March 22, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Katherine A. Brown-Wensley, Michael C. Palazzotto, William M. Lamanna, Larry D. Boardman, John E. Gozum, Fred B. McCormic
  • Patent number: 5294517
    Abstract: Energy polymerizable compositions comprising at least one cyanate monomer and as curing agent an organometallic compound are disclosed. The compositions are useful in applications requiring high performance, such as high temperature performance; in composites, particularly structural composities; structural adhesives; tooling for structural composities; electronic applications such as printed wiring boards and semiconductor encapsulants; graphic arts; injection molding and prepregs; and high performance binders.
    Type: Grant
    Filed: January 27, 1993
    Date of Patent: March 15, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Fred B. McCormick, Katherine A. Brown-Wensley, Robert J. DeVoe
  • Patent number: 5294668
    Abstract: The invention provides pressure-sensitive adhesive (PSA) compositions comprising a graft copolymer of one or more of ethylene and C.sub.3 -C.sub.18 .alpha.-olefins and one or more of a new class of macromonomers. The adhesive composition comprises a blend of the graft copolymer with a tackifying resin. Sheet materials can be coated with layers of the adhesive composition to provide tapes and laminates.
    Type: Grant
    Filed: November 15, 1990
    Date of Patent: March 15, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Gaddam N. Babu
  • Patent number: 5292840
    Abstract: Azlactone-functional polymer supports are useful reactive supports for the attachment of functional materials to provide novel adduct beads. The adduct beads are useful as complexing agents, catalysts, polymeric reagents, chromatographic supports, and as enzyme- or other biologically active supports. Novel carboxylate-functional polymer beads, are intermediates in the preparation of the azlactone-functional beads.Azlactone-functional supports have units of the formula: ##STR1## wherein R.sup.1 is H or CH.sub.3,R.sup.2 and R.sup.3 independently can be an alkyl group having 1 to 14 carbon atoms, a cycloalkyl group having 3 to 14 carbon atoms, an aryl group having 5 to 12 ring atoms, an arenyl group having 6 to 26 carbon and 0 to 3 S, N, and nonperoxidic O heteroatoms, or R.sup.2 and R.sup.3 taken together with the carbon to which they are joined can form a carbocyclic ring containing 4 to 12 ring atoms, andn is an integer 0 or 1,the azlactone functional supports having 0.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: March 8, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Steven M. Heilmann, Jerald K. Rasmussen, Larry R. Krepski, Dean S. Milbrath, Patrick L. Coleman, Margaret M. Walker
  • Patent number: 5279742
    Abstract: A method for isolating an environmentally hazardous organic contaminant from a fluid utilizes a solid phase extraction medium comprises a PTFE fibril matrix, and sorptive particles enmeshed in said matrix comprising more than 30 and up to 100 weight percent of porous organic particles, and less than 70 to 0 weight percent of porous (organic-coated or uncoated) inorganic particles, the ratio of sorptive particles to PTFE being in the range of 40:1 to 1:4 by weight. The extraction medium is useful in pesticide, phenolics, and residue of explosives separations. The separations can be efficiently performed in a stacked disk format.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: January 18, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Craig G. Markell, Donald F. Hagen, James D. Luedtke
  • Patent number: 5278244
    Abstract: A new class of macromolecular monomers (hereinafter called "macromonomers") comprises the polymerized product of at least one of an ethenylarene and a conjugated diene monomer, the product having a terminal omega-alkenyl group of at least four carbon atoms. The novel macromonomer can be copolymerized with ethylene and alpha-olefin monomers to form graft copolymers having pendant side-chains. The graft copolymers are useful as coating and molding compositions. The macromonomers can be useful as coatings on chromatographic supports for analytical and preparative separation of chemical mixtures.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: January 11, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Gaddam N. Babu
  • Patent number: 5276106
    Abstract: A thermosettable resin composition having a viscosity that decreases during processing temperatures and increases as the temperature is raised to curing temperatures is provided The composition comprises thermosettable resins and thermoplastic particles that are insoluble in the thermosettable resins at processing temperatures but soluble in the thermosettable resins at curing temperatures. Prepregs prepared from the thermosettable resin composition are also provided.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: January 4, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gene B. Portelli, William J. Schultz, John T. Boden, Daniel M. Kaufer
  • Patent number: 5274159
    Abstract: The present invention provides liquid, destructible fluorinated nonionic surfactants that are water-soluble or dispersible, that are useful as stabilizers for emulsions, and that on curing as a layer on a substrate can provide the substrate with an oil- and water-repellent coating that is free of surfactant, the destructible surfactant comprising a fluorocarbylalkoxysilane having at least one polyfluorinated aliphatic group that is both hydrophobic and oleophobic and at least one, preferably two, polyoxyalkylene or other hydrophilic groups which can be cleaved from the hydrophobe by hydrolysis. More particularly, a fluorocarbylalkoxysilane comprises at least one polyfluorinated aliphatic group and at least one polyoxyalkylene group or other hydrophilic group, said fluorocarbylalkoxysilane being destructible by hydrolysis.
    Type: Grant
    Filed: February 18, 1993
    Date of Patent: December 28, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mark J. Pellerite, Richard R. M. Jones
  • Patent number: RE34652
    Abstract: Novel fluorinated, acrylamide monomers are prepared from 2-alkenyl azlactones reacted with fluorinated alcohols. The novel monomers have the formula ##STR1## wherein R.sup.1 and R.sup.6 are independently hydrogen or methyl;R.sup.2 and R.sup.3 independently can be an alkyl, cycloalkyl, or aryl group, or R.sup.2 and R.sup.3 taken together with the carbon to which they are joined can form a carbocyclic ring containing 4 to 12 ring atoms;R.sup.4 and R.sup.5 are independently hydrogen or lower alkyl;a is 0 or 1;b is 1 or 2;X is a single bond, CH.sub.2, CH.sub.2 OCH.sub.2, and CH.sub.2 CH.sub.2 OCH.sub.2 ; andR.sub.F is a substantially perfluorinated alkyl, cycloalkyl, or aryl group when b is 1 and perfluorinated alkylene when b is 2.Novel polymers and copolymers can be prepared from the monomers of the invention.
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: June 28, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Steven M. Heilmann, Larry R. Krepski, Dean M. Moren, Jerald K. Rasmussen, Howell K. Smith, II