Patents Examined by Marion McCamish
  • 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: 5910458
    Abstract: The present invention provides a needled mat adapted to reinforce a thermosetting matrix material to form a composite, composites formed therefrom, and methods related thereto. The needled mat includes a primary layer of a plurality of unidirectional continuous glass fiber strands coated with a composition which is compatible with the thermosetting matrix material and a secondary layer positioned thereon of a plurality of randomly oriented, generally continuous and/or chopped glass fiber strands coated with a composition which is compatible with the thermosetting matrix material. The mat has a total surface weight ranging from about 1300 to about 11,500 grams per square meter.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: June 8, 1999
    Assignee: PPG Industries, Inc.
    Inventors: Kenneth D. Beer, Christopher G. Cross, Thomas V. Thimons, Thomas P. Unites
  • Patent number: 5910364
    Abstract: A core wire of a guide wire has a plurality of twisted thin threads, a distal end of the core wire being diametrically reduced to be a thinnest tip, which has twisted ends united together. A resin layer is coated on the outer surface of the core wire. The thinnest tip of the leading end of the core wire is squelched into a flat-shaped configuration so as to form a flat portion. The flat portion is shaped into a multiple-stepped structure in which the thickness of the flat portion is progressively reduced by three steps or more in approaching the distal end of the core wire.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: June 8, 1999
    Assignee: Asahi Intecc Co., Ltd.
    Inventors: Naohiko Miyata, Masashi Momota, Minoru Saruta
  • 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: 5908320
    Abstract: A method for etching through a selected portion of a Borophosphosilicate Glass (BPSG) layer of the silicon wafer layer stack to a Titanium Silicide (TiSi.sub.2) layer in a plasma processing chamber is disclosed. The method includes the step of etching through the BPSG layer using an etchant source gas that includes Ne, CHF.sub.3, CO and C.sub.4 F.sub.8. Additional process parameters are disclosed for obtaining a high BPSG:TiSi.sub.2 selectivity etch with commercially advantageous BPSG etch rates.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: June 1, 1999
    Assignee: Lam Research Corporation
    Inventors: Dinh Lau Chu, Donna Lee Alterio
  • Patent number: 5908685
    Abstract: An elastomeric composite structure 45 having two arrays of parallel cords 41, 43, each array of cords 41,43 being of different modulus or percent elongation. The array of cords 41,43 are spaced and provide different bending stiffness dependent on the direction of the applied load.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: June 1, 1999
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Amit Prakash, Thomas Reed Oare, Gary Edwin Tubb, Robert Edward Hall
  • 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
  • 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: 5906871
    Abstract: A latent image comprising a first substance formed on a substrate of a second substance having a surface tension different from a surface tension of the first substance, the first substance and the substrate having a difference of 0.1 to 100 nm in height from each other. The latent image is formed by a method comprising the-step of subjecting a substrate of a first substance to a chemical treatment or a physical treatment to form a surface of a second substance which has a surface tension different from a surface tension of the first substance and has a difference of 0.1 to 100 nm in height from the substrate on part of the substrate. The latent image is developed by a method comprising the steps of contacting a latent image comprising a first substance formed on a substrate of a second substance having a surface tension different from a surface tension of the first substance with a third substance different from the first substance and the second substance, and applying a developing ray to the latent image.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: May 25, 1999
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yasuo Takebe, Koichi Kugimiya, Norihisa Mino, Tohru Nakagawa
  • Patent number: 5905045
    Abstract: Disclosed is a veil treated with a resin-affecting compound such as a mold release agent, a UV stabilizer, or a UV absorber for use in fiber reinforced plastic (FRP) parts. Also disclosed is a process for altering the chemical or physical properties of a resin during a production process comprising the steps of: (a) treating a veil with at least one resin-affecting compound, alone or in combination with other resin-affecting compounds; (b) applying the treated veil to a resin; (c) forming an article from said veil and said resin; and (d) curing the article.
    Type: Grant
    Filed: April 11, 1996
    Date of Patent: May 18, 1999
    Assignee: Precision Fabrics Group, Inc.
    Inventors: Richard L. Vockel, Jr., Ladson L. Fraser, Jr.
  • Patent number: 5904993
    Abstract: A joint body in which aluminum and silicon nitride are strongly joined with each other is provided at a low cost, thereby providing a lightweight part which is excellent in sliding property as a mechanical part of an internal combustion engine of an automobile or the like. The joint body includes a base material which is mainly composed of aluminum, and a member consisting of a silicon nitride sintered body which is substantially directly joined to the base material. A powdery or bulky base material (2) mainly composed of aluminum, and a member (1) consisting of a silicon nitride sintered body are charged in a mold and heated under pressurization, thereby joining the same with each other.
    Type: Grant
    Filed: May 21, 1996
    Date of Patent: May 18, 1999
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hisao Takeuchi, Koichi Sogabe, Takao Nishioka, Takashi Matsuura, Akira Yamakawa
  • Patent number: 5902662
    Abstract: A lightweight dust control mat having enhanced resistance to oxidation and ozonation is provided. The mat includes a rubber backing sheet with a base rubber of NBR or SBR mixed with a polar polymer additive and a chemical blowing agent. The ratio of the base rubber to the polymer additive is between about 1.2 and 9. Following vulcanization, the rubber sheet has a specific gravity of less than about 0.98 and a Bayer ozone cracking incidence factor of 4 or less.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: May 11, 1999
    Assignee: Milliken & Company
    Inventor: Robert C. Kerr
  • 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: 5897410
    Abstract: A composite product comprising an imitation leather microfibrous fabric and an impermeable polymer film coupled thereto by an adhesive material, said impermeable film being so selected that it will adhere as a coating on a polymeric plastic article manufactured in a mold by the cold injection molding technique at the time of the injection molding operations for preparing said polymeric plastic article when the composite product is present in the mold fitted to the inside surface of the mold and the impermeable polymer film side of the composite product faces the interior of the mold while preventing passage of the injected polymeric plastic through the imitation leather microfibrous fabric and the molded article coated with the composite product.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: April 27, 1999
    Assignee: Alcantara S.p.A.
    Inventor: Cristofero Ferraro
  • Patent number: 5891559
    Abstract: A method of radiochemical analysis comprises the steps of providing a solid phase extraction sheet material comprising ion-specific sorptive or reactive particles and a porous matrix as carrier for the particles, and providing a fluid including an ion-containing radiochemical analyte comprising the specific ion, contacting the sheet material with the fluid for a time sufficient for the particles to selectively extract the analyte from the fluid, and analyzing the sheet material in a direct mode for quantitative or qualitative data relating to the radiochemical analyte. Solid phase extraction sheet materials and methods for their preparation are also disclosed.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: April 6, 1999
    Assignee: Minnesota Mining and Manufacturing Co.
    Inventors: Garold L. Goken, Wolfgang H. Strehlow
  • Patent number: 5888653
    Abstract: A heat-sensitive mimeograph stencil having a uniform shape of openings, which have an excellent balance of retention and permeation of printing ink is disclosed.The heat-sensitive mimeograph stencil includes a polyester film and a porous support made of polyester fibers, which is laminated on the polyester film, wherein the porous support constitutes a network having fused points formed by fusion of the fibers, and that membranes spanning the fibers are formed at some of the fused points, the membranes having thicknesses smaller than average diameter of the fibers. By virtue of this structure, the printed matter obtained by mimeographing using the stencil has high quality and is free from backside transcription. Further, the mimeograph stencil is excellent in ease of transportation.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: March 30, 1999
    Assignee: Toray Industries, Inc.
    Inventors: Yukio Kawatsu, Kenji Tsunashima, Katsuya Toyoda, Katsutoshi Ando, Hideyuki Yamauchi, Kenji Kida
  • Patent number: 5888701
    Abstract: A photosensitive printing element having an overall layer of powder material and a process for making a flexographic printing plate from such an element are disclosed. The photosensitive element includes a support, a photopolymerizable layer, and a layer of powder material on the photopolymerizable layer. The layer of powder material can be opaque or transparent depending upon desired use.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: March 30, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Roxy Fan
  • Patent number: 5888697
    Abstract: A photosensitive printing element having an overall layer of powder material and a process for making a flexographic printing plate from such an element are disclosed. The photosensitive element includes a support, a photopolymerizable layer, and a layer of powder material on the photopolymerizable layer. The layer of powder material can be opaque or transparent depending upon desired use.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: March 30, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Roxy Ni Fan