Patents Examined by John J. Guarriello
  • Patent number: 5969005
    Abstract: The present invention provides an ink which provides an image with a sufficient image density free from bleeding and unevenness, dries rapidly on paper and can be jetted at a high reliability and a recording method using said ink. A novel ink for ink jet recording comprising water, a coloring material and a water-soluble organic solvent is provided, characterized in that said ink comprises a polymer containing a carboxyl group having an average molecular weight of from 1,000 to 20,000 in the free or salt state in an amount of from 0.1 to 3% by weight, a water-soluble organic compound which normally stays solid and vaporizes in a proportion of not less than 50% by weight at a temperature of from 100.degree. C. to 350.degree. C. in an amount of from 1 to 20% by weight, and a compound represented by the following formula (A):R--O--X.sub.n H (A)wherein R represents a functional group selected from the group consisting of C.sub.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: October 19, 1999
    Assignee: FUJI XEROX Co., LTD
    Inventors: Yoshiro Yamashita, Ken Hashimoto, Hiroshi Inoue
  • Patent number: 5969001
    Abstract: A friction material for a synchronizer ring which exhibits good heat resistance, wear resistance and scorching resistance properties has 30 to 70% by weight of a carbon material, 10 to 40% by weight of a thermosetting resin, 5 to 30% by weight of metal fibers or metal particles and 5 to 40% by weight of inorganic fibers or inorganic particles, and having a porosity of 10 to 50%. The carbon is porous graphite particles of a size distribution in which not less than 50% of the entire number of said graphite particles have a particle diameter from 44 to 250 .mu.m. The thermosetting resin is a novolac type phenol resin, epoxy modified phenol resin, melamine modified phenol resin, cashew modified phenol resin, hydrocarbon resin modified phenol resin or cresol modified phenol resin.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: October 19, 1999
    Assignee: Dynax Corporation
    Inventor: Satoshi Kawai
  • Patent number: 5958523
    Abstract: The invention relates coating and lubricating compositions comprising polyfluorfullerene and method for using same. The surface to be coated can also be the surface of granulated or powdery polymers. To make polyfluorfullerene a fullerene solution is mixed with a polytetrafluoroethylene dispersion, and the reaction mixture is irradiated with fluorescent light during the mixing time to form polyfluorfullerene. Also, the polyfluorfullerene can be sublimated upon the surface to be coated at about 350.degree. C., or, applied to a surface and sintered at about 400.degree. C., preferably more than 400.degree. C.Polyfluorfullerene can also be used as additive for a coating of surfaces.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: September 28, 1999
    Inventor: Marijan Bradic
  • Patent number: 5955515
    Abstract: Disclosed herein is a water-based ink for ink-jet, comprising a liquid composition containing a coloring material and a liquid medium, wherein the ink comprises a heat-reversible type thickening polymer.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: September 21, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isao Kimura, Hiroyuki Maeda, Hidemi Kubota, Tatsuya Ohsumi
  • Patent number: 5952404
    Abstract: An aqueous gloss emulsion paint comprises a dispersion of structured composite particles, said structured particles comprising an association of particles of inorganic pigment and polymeric particles. The polymeric particles are formed from a polymer or copolymer having a minimum film forming temperature not greater than 50.degree. C. The component particles of the composite particles are held in association as a result of surface charges on the particles said surface charges on the polymeric particles being of opposite sign to the surface charge on the particles of inorganic pigment. The ratio of polymeric particles to particles of inorganic pigment in the composite particles is from 0.5:1 to 6:1 by volume.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: September 14, 1999
    Assignee: Tioxide Group Services Limited
    Inventors: Leslie Ainsley Simpson, Keith Robson, Steven Hugh Ashdown, Lisa Blakey
  • Patent number: 5948845
    Abstract: An organic solvent-based paint is provided which has, among other things, a perlitic component. The paint resists thermal loading and loss. A series addition of components provides the paint efficiently. The paint is useful for many substrates, including metals.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: September 7, 1999
    Assignee: P.S.A.M.S., Inc.
    Inventors: John W. Good, Rufus H. Kerry
  • Patent number: 5936027
    Abstract: A jet ink composition for use with textiles which comprises a pigment dispersed with an ethyl cellulose resin, a silicone resin, a phenolic resin, and at least one non-aqueous solvent in which the pigment dispersion, silicone resin, and phenolic resin are dissolved. The printed images formed therefrom are readable even when applied to darkly-dyed textiles.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: August 10, 1999
    Assignee: Videojet Systems International, Inc.
    Inventors: Peter Zahrobsky, Bruce Lent
  • Patent number: 5936008
    Abstract: An ink for ink jet printing includes a liquid vehicle comprising water and toner particles with a colorant dispersed in or associated with the toner particles. The ink composition combines the print quality advantages of xerographic printing with the economic advantages of ink jet printing, thereby providing waterfast, archival quality prints.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: August 10, 1999
    Assignee: Xerox Corporation
    Inventors: Robert N. Jones, Edward J. Radigan, Jr., Susan Robinette, Raj D. Patel, Michael A. Hopper, Grazyna E. Kmiecik-Lawrynowicz, Garland J. Nichols, Beng S. Ong
  • Patent number: 5932629
    Abstract: An aqueous printing ink composition containing finely dispersed pigments and a synthetic polymer binder, the binder containing: (a) finely dispersed, aqueous-basic insoluble emulsion (co)polymers having a number average molecular weight of from about 10,000 to 1,000,000 and a glass transition temperature of up to 0.degree. C., in intimate admixture with (b) aqueous-basic soluble or dispersible (co) polymers having a number average molecular weight lower than that of the (co)polymers of component (a) and a glass transition temperature of at least 0.degree. C.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: August 3, 1999
    Assignees: Henkel Kommanditgesellschaft auf Aktien, Hartmann Druckfarben, GmbH
    Inventors: Michael Beck, Herbert Fischer, Wolfgang Ritter, Ludwig Schieferstein, Udo Griebsch, Quang-Minh Thai
  • Patent number: 5932645
    Abstract: A coating composition for screen printing containing a fluorine rubber in a dissolved state is disclosed, wherein the solvent for the fluorine rubber comprises 60 to 100% by weight, based on the total solvent, of an ester ranging in boiling point from isoamyl acetate to isobornyl acetate. The coating composition which, even when formulated as a thick solution for providing a thick coat as used in the production of a metal gasket, hardly clogs the screen thereby making continuous coating possible.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: August 3, 1999
    Assignee: Nippon Reinz Co., Ltd.
    Inventors: Teruaki Kawanaka, Eiichi Oohira, Hiroo Buseki
  • Patent number: 5929135
    Abstract: This invention provides a ball-point pen suited to low-viscosity aqueous ink. This ball-point pen includes a ball-point pen refill in which an ink reservoir communicates with a tip for holding a tip ball via a joint, wherein the ink reservoir is filled with water type ball-point pen ink containing at least one type of a solvent selected from the group consisting of ethyleneglycol, diethyleneglycol, propyleneglycol, and glycerin in an amount of 5 to 40 wt % of the total ink amount, a crosslinking acrylic acid polymer in an amount of 0.1 to 1.0 wt % of the total ink amount, a pigment in an amount of 5 to 10 wt % of the total ink amount, and the balance primarily consisting of water, and the tip has a spring which in a normal state urges and brings the tip ball into intimate contact with the inner edge of a ball holding portion at the front end of the tip and releases the intimate contact when writing is performed.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: July 27, 1999
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Eiji Wasai, Kazuhiko Furukawa
  • Patent number: 5929134
    Abstract: An ink composition suitable for ink jet printing operations comprising an aqueous resin dispersion and an aqueous colorant where said ink composition is substantially free of volatile organic compounds. Compositions are provided that form printed images that, without curing, are solvent-washable with isopropanol, ethanol, water, and mixtures thereof, and are retortable, without curing. Ink jet compositions capable of forming colored images capable of being washed with isopropanol, ethanol, water, and mixtures thereof, after curing, are also provided. Finally, ink jet inks capable of withstanding washing with strong organic solvents, such as methylethylketone and methanol, after curing, are also provided.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 27, 1999
    Assignee: Videojet Systems International, Inc.
    Inventors: Bruce A. Lent, Adrian M. Loria
  • Patent number: 5925693
    Abstract: Correction fluids are provided which include a cationic stain blocking agent, an opacifying pigment and water. Preferred opacifying pigments include an alumina treated titanium dioxide and a clay. The new correction fluids have improved bleed resistance and hiding power.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: July 20, 1999
    Assignee: The Gillette Company
    Inventor: Norman G. Sanborn
  • Patent number: 5919838
    Abstract: Methods for preparing an ink concentrate are disclosed. To prepare the ink concentrate, a varnish that includes at least one dispersing polymer is added to the pigment particles, such as an aqueous slurry or an organic-solvent-treated aqueous slurry of the pigment particles. The blend of varnish and pigment particles then is heated to a temperature effective to melt the dispersing polymer. Upon cooling, the dispersing polymer solidifies at the surface of the pigment particles to thereby physically attach and bond to and preferably encapsulate the pigment particles and form an ink concentrate. The ink concentrate thus formed will have improved color properties as compared to conventional ink concentrates.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: July 6, 1999
    Inventor: Yoshikazu Mizobuchi
  • Patent number: 5916966
    Abstract: Disclosed is a stabilized phenolic resin melamine dispersion comprising a liquid alkaline resole resin composition and solid melamine crystal dispersed throughout the resin composition. The liquid alkaline resole resin composition comprises the reaction product of combining formaldehyde and phenol at a formaldehyde to phenol mole ratio of about 0.5:1 to about 3.5:1 in the presence of a basic catalyst. The melamine crystal to phenol mole ratio ranges from about 0.01:1 to about 1:1. Moreover, the composition has a free formaldehyde content of at most about 0.5 weight percent. A method for making this dispersion is also disclosed.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: June 29, 1999
    Assignee: Borden Chemical, Inc.
    Inventor: Wayne Richard Walisser
  • Patent number: 5914359
    Abstract: Coloring compositions for use in the formation of transparent colored micro-patterns are provided. They comprise colorants, thermosetting or photosensitive resin materials and extenders having an average particle size of not more than 300 nm. The compositions are useful for the fabrication of color filters to be used for display elements such as liquid crystal display (LCD) and solid state imaging devices such as charge-coupled device (CCD). The formed patterns have lower fluctuation in colored layer thickness all over the patterns, superior layer flatness, color levelness and sharpness of pattern boundaries, as well as large purity, clarity and color brightness.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: June 22, 1999
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kazuo Tohda, Kaori Yamamoto, Kiyoharu Nakatsuka
  • Patent number: 5912280
    Abstract: Water-fastness of inks containing pigment and a polymeric dispersant is improved by the addition of core-shell or tetrafluoroethylene emulsion polymers. The printed ink images exhibit improved resistance to smudge or smear when handled or marked with highlight pens.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: June 15, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Waifong Liew Anton, Milan Bohuslav Bednarek, Edward George Howard, Jr., Kathryn Amy Pearlstine, Soodebeh Tronson
  • Patent number: 5910374
    Abstract: A multiple layer film useful in moisture barrier packaging applications has at least one layer comprising a blend of propylene polymer or copolymer, and a hydrocarbon resin; and two additional layers comprising a propylene polymer or copolymer, ethylene alpha olefin copolymer, ionomer, polybutene, or blends thereof. A core layer of ethylene vinyl alcohol copolymer or other oxygen barrier material, or high density polyethylene, can be included in some embodiments. A preferred embodiment of the multi-layer film exhibits excellent moisture barrier and optical properties, and shrink properties as well if the film has been oriented. High oxygen barrier is also a feature in embodiments including EVOH or other oxygen barrier materials.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: June 8, 1999
    Assignee: Cryovac, Inc.
    Inventor: Gautam P. Shah
  • Patent number: 5908914
    Abstract: This invention relates to benzylic ether phenolic resole resins prepared in a sealed reaction vessel and their uses. The benzylic ether phenolic resole resins are prepared by heating phenol and an aldehyde in a sealed reaction vessel in the presence of a divalent metal catalyst without removing water generated by the reaction until an appropriate endpoint for the resin is reached. The benzylic ether phenolic resole resins produced by the process are preferably free or essentially free of unreacted formaldehyde and can be used in the resin component of phenolic-urethane foundry binders to make foundry cores and/or molds by the cold-box and no-bake processes. The cores and/or molds are used for making metal castings.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: June 1, 1999
    Assignee: Ashland Inc.
    Inventors: Thomas Edward Dando, William Rexford Dunnavant, Robert Bernard Fechter, Heimo Josef Langer
  • Patent number: 5908896
    Abstract: Organic aerogel microspheres which can be used in capacitors, batteries, thermal insulation, adsorption/filtration media, and chromatographic packings, having diameters ranging from about 1 micron to about 3 mm. The microspheres can be pyrolyzed to form carbon aerogel microspheres. This method involves stirring the aqueous organic phase in mineral oil at elevated temperature until the dispersed organic phase polymerizes and forms nonsticky gel spheres. The size of the microspheres depends on the collision rate of the liquid droplets and the reaction rate of the monomers from which the aqueous solution is formed. The collision rate is governed by the volume ratio of the aqueous solution to the mineral oil and the shear rate, while the reaction rate is governed by the chemical formulation and the curing temperature.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: June 1, 1999
    Assignee: The Regents of the University of California
    Inventors: Steven T. Mayer, Fung-Ming Kong, Richard W. Pekala, James L. Kaschmitter