Patents Represented by Attorney Darla P. Neaveill
  • Patent number: 5712027
    Abstract: An improved ink-receptive sheet comprising a substrate bearing on at least one major surface thereof an ink-receptive layer which comprises at least one ink receptive polymer and an effective amount of polymeric mordant having the general structure: ##STR1## wherein A is selected from the group consisting of a COO-alkylene group having from 1 to about 5 carbon atoms, a CONH-alkylene group having from 1 to about 5 carbon atoms, --COO--(CH.sub.2 CH.sub.2 O)n--CH.sub.2, --CONH--(CH.sub.2 CH.sub.2 O)n--CH.sub.2 -- and .paren open-st.CH.sub.2 CH.sub.2 NH.sub.2 Cl.paren close-st.n, wherein n is from 1 to about 5;E and D are independently selected from the group consisting of alkyl group having from 1 to about 5 carbon atoms;or A, E, D and N are combined to form a heterocyclic compound selected from the group consisting of ##STR2## R.sub.1 and R.sub.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: January 27, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mahfuza B. Ali, Omar Farooq, Mohammed Iqbal, Alan G. Miller
  • Patent number: 5707722
    Abstract: A phase separated composition suitable for coating onto an ink-jet recording sheet comprising,a) at least one nonionic fluorocarbon surfactant having a hydrophilic portion and a hydrophobic portion,b) at least one polymer selected from the group consisting of hydroxycellulose and substituted hydroxycellulose polymers, andc) at least one phase separation additivesuch composition being crosslinkable when subjected to temperatures of at least about 90.degree. C., such composition forming a microporous coating.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: January 13, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mohammed Iqbal, Armin J. Paff, Donald J. Williams
  • Patent number: 5688860
    Abstract: Polyurethane/urea elastomers having an isocyanate equivalent index below 100, preferably from about 15 to about 80; containing an effective amount of polyisocyanate component, and an effective amount of an isocyanate reactive component comprising at least one polyamine and at least one polyol, wherein said elastomer contains from about 1 to about 199 equivalent percent amine per isocyanate equivalent.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: November 18, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Thomas Stone Croft
  • Patent number: 5688603
    Abstract: A non-crosslinked composition suitable for coating onto an ink-jet recording sheet comprising.a) at least one nonionic fluorocarbon surfactant,b) at least one alkanolamine metal chelate wherein said metal is selected from the group consisting of titanium, zirconium and aluminum, andc) at least one polymer selected from the group consisting of hydroxycellulose and substituted hydroxycellulose polymers,such composition being crosslinkable when subjected to temperatures of at least about 90.degree. C.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: November 18, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mohammed Iqbal, Armin J. Paff, Donald J. Williams, Omar Farooq, David W. Tweeten
  • Patent number: 5631079
    Abstract: A heat-resistant anti-static pressure-sensitive adhesive tape comprising a substrate having coated thereon an acrylic microparticulate adhesive having an average diameter of at least about 1 micrometer, wherein the microparticles have a surface bearing thereon a conductive material formed from a polymer electrolyte base polymer, and at least one ionic salt selected from the group consisting of salts of alkali metals and salts of alkaline earth metals, said adhesive being adhered to said substrate by means of a primer, said primer comprising at least one phenolic resin and at least one rubbery compound, said adhesive tape being capable of surviving immersion in molten solder for at least about 5 seconds.
    Type: Grant
    Filed: June 29, 1995
    Date of Patent: May 20, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gustav Gutman, Steven D. Yau
  • Patent number: 5624747
    Abstract: A water-based toner-receptive composition suitable for electrophotographic or xerographic imaging, comprising:a) from about 65 to about 99 parts of a transparent film-forming core/shell latex polymer, wherein the ratio of core to shell of said core/shell latex polymer ranges from about 10/90 to about 90/10, with the core having a lower T.sub.g than the shell;b) from about 1 to about 15 parts polymeric particles; andc) from 0 to about 20 parts of an antistatic agent selected from the group consisting of cationic agents, anionic agents, fluorinated agents, and nonionic agents.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: April 29, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Manisha Sarkar, Ying-Yuh Lu
  • Patent number: 5621043
    Abstract: An elastomer composition, resistant to hydrocarbon fluid and water absorption, comprisinga) an isocyanate reactive component comprising a polypropylene ether polyol containing from about 5 percent to about 60 percent of a dispersion comprising a condensation or addition polymer,b) from about 5 percent to about 35 percent of an epoxy resin, andc) a polyurethane formed from said polypropylene ether polyol, having active hydrogen atoms and at least one isocyanate component in the presence of said dispersion and said epoxy resin,said polyurethane having an isocyanate index of less than 100, said elastomer composition exhibiting less than about 20 percent weight gain after being immersed in kerosene for 24 hours at 38.degree. C.
    Type: Grant
    Filed: August 2, 1995
    Date of Patent: April 15, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Thomas S. Croft
  • Patent number: 5620643
    Abstract: A method for forming agglomerated powder particles whereby powder particles absorb energy pulses emanating from a high intensity light source, which causes particles to soften to produce agglomerated powder particles by inter-particle contact, reducing the amount of fines, and producing agglomerated powder particles of increased average particle size, having smooth surfaces and improved flow characteristics for bulk powders.
    Type: Grant
    Filed: October 26, 1995
    Date of Patent: April 15, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Joseph I. Maiden, William A. Hendrickson, John T. Boden
  • Patent number: 5609969
    Abstract: The invention comprises a self supporting electronic packaging article comprising an insulative polymer overcoated with an antistatic/protective coating system comprising from about 8 mg/m.sup.2 to about 70 mg/m.sup.2 vanadium pentoxide, from about 36 mg/m.sup.2 to about 270 mg/m.sup.2 of a polymer latex having a hydrophilic functionality, and from about 210 mg/m.sup.2 to about 842 mg/m.sup.2 of a nonsulfonated protective topical binder, all of which may be contained in a single coating, or which may be contained in a two-layer coating system.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: March 11, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: William J. Clatanoff, Eric D. Morrison, Nanayakkara L. D. Somasiri
  • Patent number: 5589269
    Abstract: An improved ink-receptive sheet comprising a substrate bearing on at least one major surface thereof an ink-receptive layer which comprises at least one ink receptive polymer and an effective amount of polymeric mordant having the general structure: ##STR1## wherein A is selected from the group consisting of a COO-alkylene group having from 1 to about 5 carbon atoms, a CONH-alkylene group having from 1 to about 5 carbon atoms, --COO--(CH.sub.2 CH.sub.2 O).sub.n --CH.sub.2 --, --CONH--(CH.sub.2 CH.sub.2 O).sub.n --CH.sub.2 -- and .paren open-st.CH.sub.2 CH.sub.2 NH.sub.2 Cl.paren close-st.n, wherein n is from 1 to about 5;E and D are independently selected from the group consisting of alkyl group having from 1 to about 5 carbon atoms;or A, E, D and N are combined to form a heterocyclic compound selected from the group consisting of ##STR2## R.sub.1 and R.sub.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: December 31, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mahfuza B. Ali, Omar Farooq, Mohammed Iqbal, Alan G. Miller
  • Patent number: 5568210
    Abstract: An improved envelope for transparencies for overhead projectors comprising a substantially rectangular pocket made of a transparent sheet material, the pocket having two longitudinal side edges connected by shorter side edges, and being open at least along one side edge for insertion of a transparency, at least one opaque flap attached in a foldable manner along one of the side edges by means of a flexible adhesive tape, the tape comprising a flexible polyester backing having a thickness of from about 5 to about 15 micrometers, and coated on one surface of the backing is an adhesive layer, wherein the tape has a flexibility measurement of about 1.8 grams, and the flap is capable of remaining in the unfolded position on an overhead projector stage with minimal adhesive transfer at the operating temperature of the overhead projector.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: October 22, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Douglas A. Kiehne, Kenneth W. Luthy
  • Patent number: 5567507
    Abstract: An ink-receptive sheet comprising a substrate bearing on at least one major surface an ink-receptive coating comprising at least two layers, a thin upper layer and a thick base layer, wherein said upper layer comprises a high viscosity binder selected from the group consisting of methylcellulose, hydroxypropyl methylcellulose, and blends thereof.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: October 22, 1996
    Assignee: Minnesota Mining And Manufacturing Company
    Inventors: Armin J. Paff, Alan G. Miller, Donald J. Williams
  • Patent number: 5562470
    Abstract: A socket for temporary contact to a gull wing type electronic device includes a cylindrical cam having a recess and a surface adjacent the recess for bearing against leads of the gull wing device upon rotation of the cam and forcing the leads into engagement with contacts providing electrical contact between the leads and another electronic device.
    Type: Grant
    Filed: June 27, 1995
    Date of Patent: October 8, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Kurt H. Petersen
  • Patent number: 5518809
    Abstract: An image recording sheet comprising a substrate having an imaging surface and an opposing surface, the opposing surface having coated thereon a feed facilitation layer comprising a copolymer formed from at least one monomer selected from the group consisting of bicyclic alkyl (meth) acrylates, aliphatic alkyl (meth)acrylates having from one to 12 carbon atoms, aromatic (meth)acrylates, and a polar monomer having the formula: ##STR1## wherein R is hydrogen or methyl, R.sub.1 and R.sub.2 may be hydrogen, identical or differing alkyl groups having up to 8 carbon atoms, preferably up to 2 carbon atoms, or the quaternary cationic salts thereof, at least one long chain polymeric particle having good antifriction characteristics and optionally, an antistatic agent selected from the group consisting of cationic agents, anionic agents, fluorinated agents, and nonionic agents.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: May 21, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert M. Henry, Dwight L. Evans, Manisha Sarkar
  • Patent number: 5514449
    Abstract: An interconnect substrate comprising a metal-polymer composite incorporating microelectronic circuitry, which interconnect substrate is characterized by the feature that the polymer comprises alternating layers of thermoset and thermoplastic resins, said thermoplastic resins being resistant to the highest temperature to which the interconnect substrate may be heated, said thermoset resins being selected from the group consisting of bismaleimides, thermosetting polyimides, benzocyclobutenes and cyanate esters, said thermoplastic resin being selected from the group consisting of preimidized polyetherimides, and polyesters including polyacrylates, polyamides, polyvinylacetals, and phenoxy resins, said substrate having a durable base.
    Type: Grant
    Filed: December 5, 1991
    Date of Patent: May 7, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Jeanne M. Tingerthal, Gregory P. Dado
  • Patent number: 5508107
    Abstract: A water-resistant, anti-static pressure-sensitive adhesive tape suitable for use as a wafer dicing tape comprising a flexible substrate having opposing surfaces, at least one surface bearing thereon a removable, aziridine-crosslinked microparticulate adhesive comprised of microparticles having a surface bearing thereon an ionic conductive material formed from a polymer electrolyte base polymer, and at least one ionic salt selected from the group consisting of salts of alkali metals and salts of alkaline earth metals, wherein said microparticles have an average diameter of at least about 1 micrometer, said adhesive having an adhesion to steel of from about 0.5 Newtons/100 mm (N/100 mm) to about 10 N/100 mm.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: April 16, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gustav Gutman, Steven D. Yau
  • Patent number: 5500457
    Abstract: A water-based toner-receptive composition suitable for electrophotographic or xerographic imaging, comprising:a) from about 65 to about 99 parts of a transparent film-forming core/shell latex polymer, wherein the ratio of core to shell of said core/shell latex polymer ranges from about 10/90 to about 90/10, with the core having a lower T.sub.g than the shell;b) from about 1 to about 15 parts polymeric particles; andc) from 0 to about 20 parts of an antistatic agent selected from the group consisting of cationic agents, anionic agents, fluorinated agents, and nonionic agents.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: March 19, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Manisha Sarkar, Ying-Yuh Lu
  • Patent number: 5500293
    Abstract: The invention provides an adhesive composition suitable for use in an insulating tape having improved plasticizer resistance, comprising from about 13 to about 42 of a polyisoprene homopolymer, from about 13 to about 42 of a styrene-isoprene-styrene copolymer, from about 25 to about 55 of an aliphatic tackifying agent containing from about 4 to about 6 carbon atoms, and from about 2 to about 20 of an end block reinforcing resin.
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: March 19, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Felix P. Lau, Timothy D. Bredahl, George E. Cox
  • Patent number: 5498476
    Abstract: A halogen-free, electrically insulating film comprising a resin component containing:a) from 0 to about 40 parts of a rubber selected from EP or EPDM rubber,b) correspondingly, from about 60 to about 100 parts of an ethylene vinyl acetate polymer,c) from about 40 parts to about 150 parts ethylene diamine phosphate per 100 parts of said resin component, andd) from about 0.5 to about 5 parts of an amino-functional silane coupling agent per 100 parts resin component,wherein a nonoriented film self-extinguishes in less than about 5 seconds, has an elongation at break of at least about 200%, a dielectric strength of at least about 1200 V/Mil, and said film has a stress-strain relationship such that a curve showing a first derivative of stress versus strain is positive over the entire curve, and a curve showing a second derivative of stress versus strain is negative over more than 50% of said curve.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: March 12, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Pamela S. Tucker, Eumi Pyun
  • Patent number: 5472789
    Abstract: Semi-interpenetrating polymeric networks comprising a blend of hydrophilic and hydrophobic polymers wherein at least one of the polymeric components is crosslinked after blending to form a continuous network throughout the bulk of the material, and through which the uncrosslinked polymeric components are intertwined in such a way as to form a macroscopically homogeneous composition. The integrity of such networks persists even after absorption of solvent. These materials can be used to form durable, non-tacky, ink-absorbent, transparent coatings for graphical materials.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: December 5, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mohammad Iqbal, Alan G. Miller, John J. Stofko, Jr.