Patents Examined by John J. Guarriello
  • Patent number: 5906887
    Abstract: A composite elastomeric article for cushioning or mounting purposes including a mass substantially of tacky rubbery solid microspheres formed by suspension polymerization and agglomerated together in substantial contact with one another.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: May 25, 1999
    Assignee: P.C.I.Paper Conversions, Inc.
    Inventor: Giles Sydnor Withers
  • Patent number: 5905100
    Abstract: A novel composition and process are disclosed for forming crosslinked gels at elevated temperatures utilizing a novel crosslinking agent system containing hexamethylenetetramine, a water dispersible aminobenzoic acid compound or phenol, an acrylamide-containing polymer, and water.
    Type: Grant
    Filed: March 10, 1992
    Date of Patent: May 18, 1999
    Assignee: Phillips Petroleum Company
    Inventor: Ahmad Moradi-Araghi
  • Patent number: 5902841
    Abstract: A phase change ink composition is disclosed wherein the ink composition utilizes colorant in combination with a selected phase change ink carrier composition containing at least one hydroxy-functional fatty amide compound.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: May 11, 1999
    Assignee: Tektronix, Inc.
    Inventors: C. Wayne Jaeger, Donald R. Titterington, Loc V. Bui
  • Patent number: 5900445
    Abstract: An erasable ink composition contains a water-insoluble polymeric dye obtained by copolymerizing ethylenically unsaturated monomers at least one of which possesses a dye moiety covalently bonded thereto. The ink is intended for use in any of a variety of marking instruments, in particular, a ball-point pen.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: May 4, 1999
    Assignee: BIC Corporation
    Inventors: Wayne A. Chandler, David C. Villiger, Aiying Wang, Jeffery H. Banning, Barry W. Chadwick
  • Patent number: 5886079
    Abstract: Polymer fine particles are obtained by emulsion-polymerizing one or more monomers having a carboxylate group represented by the following formula and an unsaturated group that is radical polymerizable:--COO.sup.- X.sup.+ (I)wherein in the formula (I), X.sup.+ is one species selected from the group consisting of monovalent metal ion, ##STR1## wherein R.sub.1 to R.sub.5 may be the same or different, representing hydrocarbon groups having a number of carbon atom or atoms of 1 to 4 respectively. Alternatively, polymer fine particles may be obtained by performing emulsion polymerization in the presence of a compound containing the foregoing carboxylate group. In the obtained polymer fine particles, the carboxylate group is incorporated into surfaces of the fine particles by the aid of covalent bond or physical adsorption. Metallic parts such as those contained in a printer are not corroded owing to the presence of the carboxylate group on the surfaces of the fine particles.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: March 23, 1999
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Shouji Saibara, Kouji Takazawa
  • Patent number: 5886092
    Abstract: Disclosed are methods for preparing carbon-containing materials resistant to alkali metal disruption, and compositions suitable for the preparation of carbon-containing materials resistant to alkali metal disruption. A composition in accordance with the invention comprises a mixture of (a) a binder phase having a viscosity of less than 10 Pascal seconds and a char yield in excess of 20% upon heating to a temperature of 800.degree.-1200.degree. C., and comprising at least one polymerizable resin and (b) particles of a solid material which is thermally stable at a temperature of 800.degree.-1200.degree. C., the particles having a granulometry wherein void spaces between the particles have a size of less than 20 .mu.m in diameter and the particles are coated with a layer of binder phase having a thickness of less than 2 .mu.m. When the composition is carbonized by heating to a temperature of 800.degree.-1200.degree. C., the composition forms a carbon-containing material resistant to alkali metal disruption.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: March 23, 1999
    Assignee: Comalco Aluminuim Limited
    Inventors: Raymond Walter Shaw, Drago Dragutin Juric, Gavan Joseph Stray
  • Patent number: 5883180
    Abstract: A water borne, bakable paint composition having a reduced VOC formulated to contain a dispersion of at least one water compatible, film forming cross-linkable resin, a solvent and/or coalescent for the resin in the form of a block copolymer of a copolyetherpolyol and a cross-linking agent for the resin and the copolyetherpolyol in which the cross-linking agent is present in an amount sufficient to cross link the resin and the copolyetherpolyol whereby the latter becomes part of the film when the paint is baked.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: March 16, 1999
    Assignee: Finishes Unlimited, Inc.
    Inventor: Francis J. Slama
  • Patent number: 5883173
    Abstract: The present invention relates to a latex comprising water and a layered material intercalated with a polymer. The invention also relates to a nanocomposite material comprising a layered material intercalated with a polymer. The latex can be produced by forming a dispersion of layered material in water, adding surfactant, polymerizable monomer or monomers, and a polymerization initiator to the mixture and then polymerizing the monomer to form a latex. The latex can also be formed from preformed polymers. Composite materials formed from latexes produced by either method have improved mechanical properties and reduced air permeability.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: March 16, 1999
    Assignee: Exxon Research and Engineering Company
    Inventors: Chester W. Elspass, Dennis G. Peiffer, Edward Nathan Kresge, Dong-Tsai Hsieh, James Joseph Chludzinski, Keng S. Liang
  • Patent number: 5880207
    Abstract: Acrylic compositions are provided which comprise a matrix of polymethyl methacrylate having dispersed within it particles comprising 75 to 90 weight percent of polymethyl methacrylate and greater than 10 to 25 weight percent of a comonomer comprising an ethylenically unsaturated monomer that copolymerizes with methyl methacrylate, wherein the particles further comprise more than 0.4 weight percent of a crosslinker.
    Type: Grant
    Filed: October 17, 1995
    Date of Patent: March 9, 1999
    Assignee: ICI Acrylics Inc.
    Inventors: Walter H. Delphin, Marcia O. Leach, James R. Leach, Fareeduddin Farooq, Connie D. Dickerson
  • Patent number: 5880176
    Abstract: A fluorescent marking composition containing particles of an organic material which has a glass transition temperature of at least 30.degree. C. and an average particle size of at least 30 nm, and emitting fluorescence in a visible light range, or absorbing infrared light having a wavelength of at least 700 nm and emitting a light in an infrared wavelength range, which composition is excellent in dispersion stability, light resistance, and heat and light resistance, and provides a mark which does not bleed.
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: March 9, 1999
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Takanori Kamoto, Yoshinori Yamamoto, Toshinobu Sueyoshi
  • Patent number: 5880197
    Abstract: Intercalates formed by contacting a layered material, e.g., a phyllosilicate, with an intercalant monomer amine and/or amide to sorb or intercalate the intercalant monomer between adjacent platelets of the layered material. Sufficient intercalant monomer is sorbed between adjacent platelets to expand the adjacent platelets to a spacing of at least about 5 .ANG. (as measured after water removal to a maximum of 5% by weight water), up to about 100 .ANG. and preferably in the range of about 10-45 .ANG., so that the intercalate easily can be exfoliated into individual platelets. The intercalated complex can be combined with an organic liquid into a viscous carrier material, for delivery of the carrier material, or for delivery of an active compound; or the intercalated complex can be combined with a matrix polymer to form a strong, filled polymer matrix. Alternatively, the intercalated complex can be exfoliated prior to combination with the organic liquid or the matrix polymer.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: March 9, 1999
    Assignee: AMCOL International Corporation
    Inventors: Gary W. Beall, Semeon Tsipursky, Anatoliy Sorokin, Anatoliy Goldman
  • Patent number: 5880193
    Abstract: The preparation of pigment concentrates for the coloring of resin molding compositions in which the pigment is very finely dispersed is carried out successfully using, for the preparation of the pigment concentrates, a dispersant which contains the following components:from 0 to 90% by weight of a substantially amorphous poly-.alpha.-olefin,from 0 to 90% by weight of polyolefin wax,from 0 to 30% by weight of crystalline polyolefin, andfrom 1 to 50% by weight of a specific polyacrylic acid ester.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: March 9, 1999
    Assignee: HUELS Aktiengesellschaft
    Inventors: Fritz Berke, Volker Schrenk, Manfred Scheiba, Werner Schaefer, Guenter Hahn
  • Patent number: 5880214
    Abstract: An emulsion ink for stencil printing is disclosed which enlarges the selection region of a body to be printed on, improves the handling property and adds a building-up feeling and a brilliance to the printed letters and others by developing the drying property, sticking tendency and preservation stability of the ink. The emulsion ink for stencil printing is characterized by using an oil-in-water type resin emulsion as a water phase in the water-in-oil type emulsion ink consisting of an oil phase and a water phase, and it is further characterized in that the minimum film-making temperature for the oil-in-water type resin emulsion described above is 40.degree. C. or less and its compound ratio is 2-45 wt.% as a reduced solid basis of the total amount of the avaiable emulsion ink.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: March 9, 1999
    Assignee: Riso Kagaku Corporation
    Inventor: Sadanao Okuda
  • Patent number: 5877234
    Abstract: The invention features a water-based correction fluid that includes an opacifying pigment, water, and a film-forming system that provides the correction fluid with a writeover time of about 30 seconds or less.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: March 2, 1999
    Assignee: The Gillette Company
    Inventors: Yun Xu, Brian K. McHugh, Kim H. Ng
  • Patent number: 5877252
    Abstract: This invention describes water-based microsphere adhesive formulations to be used in the sheet-to-sheet coating process. These adhesives have proven to have excellent wet-out of a difficult, high-energy surface, good shear stability to allow die-coating or gravure-coating of the adhesive onto an intermediate carrier belt, good elasticity to allow the wet adhesive to cling to the intermediate belt until it is dried (or partially dried), good integrity to allow complete transfer from the intermediate carrier belt onto the final substrate, and repositionable properties in a final product composition.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: March 2, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kim K. Tsujimoto, Mark S. Vogel, Eric Francis Yves Baertich
  • Patent number: 5872162
    Abstract: Correction fluids are provided which include an opacifying pigment, a water-fast ink fixing agent including a cationic non-film-forming polymer, a binder including a film-forming polymer compatible with the ink fixing agent, and water. The new correction fluids have improved "bleed" resistance when used to correct water-fast inks, such as ball-point pen inks.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: February 16, 1999
    Assignee: The Gillette Company
    Inventors: Brian K. McHugh, Norman G. Sanborn
  • Patent number: 5866678
    Abstract: A method for the production of an absorbent resin having a very small residual monomer content either by adding to an absorbent resin powder a substance capable of reacting with the residual monomer in the absorbent resin powder thereby forming an absorbent resin composition having a water content in the range of 10 to 70% by weight and heat-treating the absorbent resin composition at a temperature in the range of 100.degree. to 200 .degree. C. while retaining the water content of the absorbent resin or by adding to an absorbent resin powder a substance capable of reacting with the residual monomer in the absorbent resin powder thereby forming an absorbent resin composition having a water content in the range of 25 to 55% by weight, heat-treating the absorbent resin composition at a temperature in the range of 120.degree. to 200 .degree. C.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: February 2, 1999
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Katsuhiro Kajikawa, Kinya Nagasuna, Yoshihiko Masuda
  • Patent number: 5866636
    Abstract: A non-asbestos friction material containing a reinforcing fiber other than asbestos, organic fillers, friction adjusting ingredients, and a thermosetting resin for binding the reinforcing fiber, the organic fillers and the friction adjusting ingredients together. The friction adjusting ingredients contain magnesia in the form of aggregated particles which are an aggregate of minute particles. The use of magnesia in the form of aggregated particles reduces low-frequency noise and squeak while keeping the attack on the mating member low and keeping high the resistance to fading and the coefficient of friction.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: February 2, 1999
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Fumiaki Nitto, Tatsuya Sano, Seigou Sakagami, Masanori Ibuki, Hiroya Kishimoto
  • Patent number: 5863966
    Abstract: Radiation-curing printing inks which comprise organopolysiloxanes of the general formula ##STR1## in which R.sup.1 =an alkyl radical having 1 to 8 carbon atoms,R.sup.2 =a group of the formula--CH.sub.2 --CH.sub.2 --C(O)O--R--(OC(O)--CH.dbd.CH.sub.2).sub.x-1and/or--CH.dbd.CH--C(O)O--R--(OC(O)--CH.dbd.CH.sub.2).sub.x-1in which x is an integer and is at least 2, and R is a hydrocarbon radical which optionally has alkoxy groups,R.sup.3 =R.sup.1 or R.sup.2,n=30 to 150,m=0 to 3, preferably 0,in quantities of from 0.01 to 3% by weight, based on the ink formulation.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: January 26, 1999
    Assignee: Th. Goldschmidt AG
    Inventors: Thomas Ebbrecht, Georg Feldmann-Krane, Peter Lersch, Stefan Silber
  • Patent number: 5861446
    Abstract: A coated sand composition for light-alloy casting includes refractory particles blended with phenol resin, bromide and adsorbent which adsorbs decomposition product gas from the bromide.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: January 19, 1999
    Assignee: Mazda Motor Corporation
    Inventors: Yoshiro Ikeoka, Toshisaburo Kimura, Toshitada Onoda