Patents Examined by Peter Chin
  • Patent number: 6890407
    Abstract: A method and an arrangement for manufacturing calendered paper or board particularly in the on-line manufacturing method. In the method, a base web is formed from a mixture of water and pulp supplied from the headbox and the web is dried by removing water over the press section and over the dryer section by heating. The formed web is calendered at least once to modify the surface on at least one of its sides. Before calendering the cross-direction thickness profile of the web is standardized and calendering is carried out by means of a long-nip calender, whereby good surface quality is obtained without losing the bulk or stiffness of the web.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: May 10, 2005
    Assignee: Metso Paper, Inc.
    Inventors: Pekka Koivukunnas, Matti Lares, Mika Leino
  • Patent number: 6890406
    Abstract: A method for tightening a shoe press roll mantle and/or reducing its wear, in which method the shoe press used comprises a press roll (1) and a backing roll, said press roll (1) comprising a rotating, liquid-impermeable roll mantle (2), a solid and preferably non-rotatable support beam (3) going axially through the roll mantle and having a stub shaft (4, 5) at each end of it, at least one press shoe supported by the support beam and having a concave surface part, elements for pressing the concave surface part against the roll mantle so that the mantle together with the backing roll can form a pressing zone, two roll mantle end pieces (6, 7) axially movable on each stub shaft, fastening elements for fastening the axial ends of the roll mantle to each roll mantle end piece, and at least one element for tightening the elastic roll mantle and/or moving it axially on each respective stub shaft.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: May 10, 2005
    Assignee: Vaahto Oy
    Inventor: Erkki Aho
  • Patent number: 6889528
    Abstract: The present invention discloses a process for making rare earth (RE) doped optical fiber by using RE oxide coated silica nanoparticles as the precursor material, more particularly the method of the present invention involves preparation of stable dispersions (sol) of RE oxide coated silica nanoparticles at ambient temperature and applying a thin coating on the inner surface of silica glass tube following dip coating technique or any other conventional methods, of the said silica sol containing suitable dopants selected from Ge, Al, P, etc.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: May 10, 2005
    Assignees: Council of Scientific & Industrial Research, Bar-Ilan University
    Inventors: Ranjan Sen, Minati Chatterjee, Milan Kanti Naskar, Mrinmay Pal, Mukul Chandra Paul, Shyamal Kumar Bhadra, Kamal Dasgupta, Dibyendu Ganguli, Tarun Bandyopadhyay, Aharon Gedanken
  • Patent number: 6883351
    Abstract: The method of fabricating an optical waveguide fiber from a preform having a centerline aperture which includes reducing the pressure in the centerline aperture, then increasing the pressure in the centerline aperture to a pressure in order to improve uniformity, circularity, and/or symmetry around the centerline aperture region.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: April 26, 2005
    Assignee: Corning Incorporated
    Inventors: George E. Berkey, David T. Marlowe, Douglas G. Neilson, Jeffrey C. Nelson
  • Patent number: 6884321
    Abstract: A flame and heat resistant paper is disclosed having high burnthrough prevention capability, as required in aircraft applications. The paper is prepared from modified aluminum oxide silica fibers, in addition to other components, and has exceptional tensile strength and flexibility as compared to conventional inorganic papers.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: April 26, 2005
    Assignee: Tex Tech Industries, Inc.
    Inventors: David F. Erb, Jr., Eric D. Ritter, Lisa B. Stang
  • Patent number: 6880365
    Abstract: The use of blocks (1, 2, 3, 4) based on sintered tin oxide for producing the throat of a glass furnace.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: April 19, 2005
    Assignee: Societe Europeenne des Produits Refractaires
    Inventor: Jacques Marius Louis Guigonis
  • Patent number: 6881301
    Abstract: A method and an arrangement for controlling evaporation and moisture in a multinip calender (10) when a continuous fibrous web (W) is calendered in calendering nips (1,_2,—3,—4,—5) placed one after the other before the fibrous web is wound on a reel-up/winder (9). With a view to making the net evaporation from and the final moisture content of the web (W) constant when the running situations in the calender (10) change, the web is passed in the calender from the outlet of at least one nip into an air-float chamber (20) of the turning airborne type.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: April 19, 2005
    Assignee: Metso Paper, Inc.
    Inventors: Antti Heikkinen, Pekka Linnonmaa, Reijo Pietikäinen
  • Patent number: 6878237
    Abstract: Machine and process for operating machine having at least one roll and an opposing surface arranged to form at least one nip. The machine includes at least one roll and an opposing surface arranged to form at least one nip. A sound measuring device is arranged to conduct sound measurements in at least one of an area of the at least one roll and an area of the at least one nip to monitor vibrations in the at least one roll and/or in the at least one nip. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: April 12, 2005
    Assignee: Voith Paper Patent GmbH
    Inventor: Eva Scheideler
  • Patent number: 6878238
    Abstract: One embodiment of the present invention is an endless non-woven tissue making fabric having a three-dimensional texture suitable for use as a fabric for producing three-dimensional fibrous webs. The endless non-woven tissue making fabric comprises a plurality of substantially parallel adjoining sections of non-woven material. Each section of non-woven material has a width substantially less than the width of the non-woven tissue making fabric. Each section of non-woven material may be joined to at least one other adjoining section of non-woven material. The non-woven tissue making fabric has a machine direction, a cross-machine direction, a tissue contacting surface and a tissue machine contacting surface. The tissue contacting surface comprises solid matter at a plurality of heights such that the tissue contacting surface of the non-woven tissue making fabric has an Overall Surface Depth of at least 0.2 mm in regions of solid matter on the tissue contacting surface.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: April 12, 2005
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Andrew Peter Bakken, Mark Alan Burazin, Jeffrey Dean Lindsay
  • Patent number: 6875310
    Abstract: An air press for use in a paper machine removes liquid from a fiber web. The air press includes a plurality of rolls, with each roll having a peripheral surface. The plurality of rolls include at least one pair of adjacent rolls defining a nip therebetween. Each roll in the at least one roll pair has longitudinally opposite replaceable ends. The replaceable ends define a portion of the peripheral surface with the nip therebetween.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: April 5, 2005
    Assignee: Voith Paper Patent GmbH
    Inventor: David A. Beck
  • Patent number: 6875315
    Abstract: One embodiment of the present invention is an endless non-woven tissue making fabric. The endless non-woven tissue making fabric has a machine direction, cross-machine direction, a tissue machine contacting surface, a tissue contacting surface, a first side edge, and a second side edge. The non-woven tissue making fabric comprises a fabric strip of non-woven material comprising at least one layer of non-woven material. The fabric strip has a first edge, an opposing second edge, a machine direction, and a cross-machine direction. The fabric strip may be spirally wound in a plurality of contiguous turns wherein the first edge in a turn of the fabric strip extends beyond the second edge of an adjacent turn of the fabric strip, thereby forming a spirally continuous seam with adjacent turns of the fabric strip.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: April 5, 2005
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Andrew Peter Bakken, Mark Alan Burazin, Jeffrey Dean Lindsay
  • Patent number: 6874335
    Abstract: Systems and methods for large scale synthesis of germanium selenide glass and germanium selenide glass compounds are provided. Up to about 750 grams of a germanium selenide glass or a glass compound can be synthesized at a time in about eight hours or less. Stoichiometrically proportional amounts of germanium and selenium are placed in an ampoule. A variable may also be placed in the ampoule. The ampoule is heated to above the softening temperature of the glass or glass compound being synthesized. The ampoule is then rocked for a period of time while the temperature is held constant. The temperature of the ampoule is then brought down to above the softening temperature of the glass or glass compound being synthesized and then quenched.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: April 5, 2005
    Assignee: Micron Technology, Inc.
    Inventor: Stefan Uhlenbrock
  • Patent number: 6872283
    Abstract: This invention relates to porous paper machine clothing (1, 11) for dewatering a paper web in a paper machine, comprising a filament lay-up made of at least one layer (2, 12) of longitudinal filaments (3, 13) and at least one layer (4, 14) of transverse filaments (5, 6, 7; 15) which cross the longitudinal filaments (3, 13), wherein the longitudinal and transverse filaments (3, 13; 5, 6, 7; 15) are adhesively bonded to each other via an adhesive at crossing points (8, 16). The invention further relates to a method of producing porous paper machine clothing such as this.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: March 29, 2005
    Assignee: Heimbach GmbH & Co.
    Inventor: Walter Best
  • Patent number: 6869505
    Abstract: A long nip (N) shoe calender formed of a shoe roll (10) and a thermo roll (20) is used in calendering, with a nip dwell time which is over 10 ms, advantageously over 20 ms. The nip pressure is below 3 MPa, advantageously below 1 MPa, and a surface temperature of the thermo roll (20) is over 200° C., advantageously over 250° C. The board web (W) surface to be pressed against the thermo roll (20) is moisturized before the nip.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: March 22, 2005
    Assignee: Metso Paper, Inc.
    Inventors: Matti Lares, Mikko Tani
  • Patent number: 6868855
    Abstract: Smoke constituent reduction is achieved by resolving from puff-to-puff analysis at which location along a tobacco rod production of a particular smoke constituent is maximized, and locally applying an attenuator at said resolved location to reduce production of the constituent. A remainder of the rod is left untreated so as to minimize impact on taste and burn characteristics of the cigarette. Reduction of the first puff formaldehyde formation is achieved by treating the cigarette tip with salts, using Burley tobacco in the tip, increasing the rod density, ventilation at the tip, and thermal treatment of the tip. Other classes of smoke constituents such as TSNAs (tobacco specific nitrosamines), PAHs (polycyclic aromatic hydrocarbons), etc., in particular the PAHs of naphthalene, phenanthrene, pyrene, flouranthene and benzo(a)pyrene may be reduced with placement of a carbon-based and/or metallic disc at the tip and with practices of the invention herein.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: March 22, 2005
    Assignee: Philip Morris Incorporated
    Inventors: Kenneth Shafer, San Li, Milton Parrish, Susan Plunkett
  • Patent number: 6863776
    Abstract: Press section and process for dewatering a fibrous material web that includes a plurality of rolls arranged to form at least three nips and at least one endlessly circulating dewatering belt associated with each nip. Each at least one endlessly circulating dewatering belt is structured and arranged to guide the fibrous material web through its respective nip and to receive water squeezed out of the fibrous material web in the respective nip. The plurality of rolls include at least one press roll having a smooth surface arranged to contact a surface of the fibrous material web and an endlessly circulating, smooth transfer belt is structured and arranged to contact a surface of the fibrous material web opposite the surface contacting the smooth surface of the at least one press roll and to support the fibrous material web through at least one of the at least three nips.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: March 8, 2005
    Assignee: Voith Paper Patent GmbH
    Inventors: Ulrich Begemann, Ingolf Cedra, Thomas Augscheller, Georg Kleiser
  • Patent number: 6862900
    Abstract: A method and apparatus for forming a glass article such as an optical fiber having a substantially matching viscosity across an interface associated with a first section and a second section of the optical fiber is disclosed herein. The first section has a first halogen concentration and the second section has a second halogen concentration. At least one of a partial pressure of the second halogen provided to a substrate tube and a temperature of the substrate tube is configured to affect the concentration of the second halogen in the second section. Optical fiber embodiments are also included.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: March 8, 2005
    Assignee: Corning Incorporated
    Inventors: Jean-Philippe J. de Sandro, Keith L. House, Joohyun Koh, Prantik Mazumder
  • Patent number: 6862901
    Abstract: A process and an apparatus for producing glass fibers by centrifugal force are provided. Molten glass is fed into a hollow cylinder of rotating member which rotates at high speed by means of a driving device and is heated. The molten glass is ejected to an outside of a peripheral wall by centrifugal force generated by high speed rotation of the rotating member through orifices, each of which has different diameter, and which are provided alternately in a circumferential direction of the peripheral wall. A primary steam of molten glass is ejected. The primary streams is introduced into flame flow ejecting from drawing burners located at outside of the peripheral wall to form secondary fibers. A compressed gas flow is ejected to a direction at an acute angle through an ejecting outlet of an ejecting nozzle to collide the compressed fluid with the secondary fibers to thereby produce glass fibers by continuously.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: March 8, 2005
    Assignees: Paramount Glass Manufacturing Co., Ltd., NTB Technology Co., Ltd.
    Inventors: Keiji Otaki, Yukiyoshi Shinobu, Yoshiyuki Harada
  • Patent number: 6863774
    Abstract: A polishing pad for use in chemical mechanical polishing of substrates that being made of fibrous matrix such as cellulose with a binder consisting of thermoset resin material, such as phenolic resin. The polishing surface is ground to form asperities. The polishing pad provides a porous structure by which polishing slurry and polishing debris during chemical mechanical polishing of substrates are stored for subsequent rinsing away, and for enhanced flow-distribution of the polishing slurry. Also disclosed is a method of making the polishing pad.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: March 8, 2005
    Assignee: Raytech Innovative Solutions, Inc.
    Inventors: Richard D. Cooper, Paul Fathauer, Angela Mroczek-Petroski, David Perry, James J. Petroski
  • Patent number: 6860969
    Abstract: A papermaker's fabric includes top MD yarns, top CMD yarns, bottom MD yarns, bottom CMD yarns and stitching yarns. The fabric is formed in a plurality of repeating units, each of the repeating units including a set of top MD yarns, a set of top CMD yarns interwoven with the set of top MD yarns to form a top fabric layer, a set of four or eight bottom MD yarns, a set of bottom CMD yarns interwoven with the set of four or eight bottom MD yarns to form a bottom fabric layer and a set of stitching yarns interwoven with the top and bottom fabric layers. The bottom MD yarns and the bottom CMD yarns are interwoven in a series of repeat units in which each of the bottom MD yarns passes below two nonadjacent bottom CMD yarns to form bottom machine direction knuckles, each bottom machine direction knuckle being separated from one adjacent knuckle formed by that bottom machine direction yarn by two bottom CMD yarns and separated from another adjacent knuckle by four CMD yarns.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: March 1, 2005
    Assignee: Weavexx Corporation
    Inventor: Brian Troughton