Patents Examined by Mathieu Vargot
  • Patent number: 5279782
    Abstract: A method for making a rubbery weatherstrip having a suede appearance and a suede feel includes a step for coextruding a welt portion of a weatherstrip and an outer rubber layer containing fibrillated fibers, namely bast fibrillated fibers, leaf fibrillated fibers and mixture thereof, or a welt portion of a weatherstrip, a sealing portion and an outer rubber layer containing fibrillated bast or leaf fibers to adhere these sheets, a step for vulcanizing the entire portions thereof, and a step for subjecting the outer rubber layer to buff processing.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: January 18, 1994
    Assignees: Hiroshima Kasei Ltd., Tosco Co., Ltd.
    Inventors: Yuji Yamamoto, Taizo Kunimura, Hiroshi Miyachi, Shozaburo Dobashi, Hisaichiro Uchida
  • Patent number: 5279784
    Abstract: Method for forming a composite elastomer tire tread by applying a heat curable liquid elastomer mixture to a thin rubber sheet and curing the liquid mixture to form the composite tire tread. A tire retreaded with such a composite tire elastomer tread is also described.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: January 18, 1994
    Assignee: Bandag Licensing Corporation
    Inventors: David L. Bender, William H. Brugman, Floyd S. Myers
  • Patent number: 5280051
    Abstract: Artificial marble or granite having excellent aesthetic properties, patterns and tonalities which cannot be found in natural materials are prepared from a composition containing a polymerizable poly(allyl carbonate) of a polyol and mineral filler, where the mineral filler is a carbonate type in the case of marble, and silicate or silica type in the case of granite, and is in the form of particles of which at least 40% to 100% by weight have a particle size greater than 0.5 mm. The artificial marble and granite produced by the process of the invention require a limited quantity of polymerizable poly(allyl carbonate) binder, have excellent aesthetic properties and high aging resistance, making them suitable for external use.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: January 18, 1994
    Assignee: Enichem Synthesis S.p.A.
    Inventors: Enrico Traverso, Fiorenzo Renzi
  • Patent number: 5275774
    Abstract: In a process for extruding or injection moulding starch-containing composition, a substantially transparent product is produced by providing that the starch used contains less than 8% by weight of water, that the water content of the starch in the barrel of the extruder or injection moulding machine is controlled so as to be within the range of from 5 to 20% by weight (based on the weight of the starch) and that water is removed from the composition immediately before the composition leaves the barrel of the extruder or the injection moulding machine so that the water content of the composition passing through the die and/or entering the mould is less than 3% by weight of the starch.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: January 4, 1994
    Assignee: Cerestar Holdings, B.V.
    Inventors: Kark-Heinz Bahr, Michael G. Fitton, Helmut Koch
  • Patent number: 5275948
    Abstract: A method for reprocessing scrap rubber, which produces reclaimed rubber from comminuted scrap rubber after devulcanization, in a biotechnology-type of process, by holding the comminuted scrap rubber in a bacterial suspension of chemolithotropic microorganisms with a supply of air, until sulphur as an elementary sulphur and/or sulfuric acid is separated from the remaining replasticized reclaimed rubber. This biotechnological reprocessing obtains reclaimed rubber and sulphur in a simplified manner which products can be reused.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: January 4, 1994
    Assignee: Holzemann Metallverarbeitung GmbH
    Inventors: Gunhild Straube, Eckhardt Straube, Willi Neumann, Helmut Ruckauf, Ralf Forkmann, Martin Loffler
  • Patent number: 5275765
    Abstract: A method of manufacture of an optical module using a mold die including cavity portions for holding an optical connector, electronic circuit parts, and lead pins which constitute component parts of the optical module, so as to form a package. The mold die has alignment portions in which rectangular channels for aligning the optical connector are formed. Partition plates are disposed vertically between the cavity portions and the alignment portions and adapted to prevent a resin from flowing out from the cavity portions during the resin molding. An optical connector, circuit parts, and lead pins are held in the die. Resin is injected into the cavity portion to form the optical module.
    Type: Grant
    Filed: January 22, 1992
    Date of Patent: January 4, 1994
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hisao Go, Yutaka Matsumura
  • Patent number: 5271875
    Abstract: A mold assembly includes first and second mold sections having respective first and second mold cavity defining surfaces, the first mold cavity defining surface terminating in an encircling peripheral rim and the second mold cavity defining surface terminating in a deformable peripheral annulus disposed at a diameter corresponding to the rim, and cooperating tapers depending from each of the first and second molds for relatively centering the molds.
    Type: Grant
    Filed: September 12, 1991
    Date of Patent: December 21, 1993
    Assignee: Bausch & Lomb Incorporated
    Inventors: William J. Appleton, Dennis Hahn, William E. Moucha, Dominic V. Ruscio, John H. Shannon, Steven D. Silbermann, Edwin W. Weaver, Jr.
  • Patent number: 5269991
    Abstract: A process for manufacturing mouldings with the appearance of natural stones from a composition including a coloured or colourless thermoplastic resin matrix and, per 100 parts by volume of this matrix, 0.2 to 80 parts by volume of at least two fillers chosen from natural fibres, carbon fibres and mineral fillers having a different grain size or dimensions. By chosing the color of the matrix and the number, proportion, grain size and color of the different fillers, the general appearance and colors of a natural stone may be imitated. The mouldings obtained after working may be used due to their aesthetic appearance, particularly as packaging for cosmetic products.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: December 14, 1993
    Assignee: L'Oreal
    Inventor: Jean-Louis Gueret
  • Patent number: 5268136
    Abstract: Plastic sheets of good optical quality suitable for use in the glazings of automotive vehicles, eye glasses etc., are made by depositing a hardenable liquid mass upon a taut moving ribbon of plastic which has been pretreated by tensioning and heating to remove wrinkles and creases which otherwise would render optically unsatisfactory the sheet formed on the ribbon upon hardening of the liquid mass. The temperature range within which the pretreatment should be conducted is 60.degree.-100.degree. C., with 70.degree.-90.degree. C. being preferred; the tension applied in the pretreatment should be a dekanewton or more per square millimeter, preferably 1.5-7.5 dekanewtons per mm.sup.2 ; and the time of pretreatment is at least a minute and preferably 5 or more minutes.
    Type: Grant
    Filed: December 24, 1991
    Date of Patent: December 7, 1993
    Assignee: Saint-Gobain Vitrage International
    Inventors: Philippe Girard, Jean-Marc Petitcollin, Dany-Ange Plebani
  • Patent number: 5266362
    Abstract: A molded article of a composition obtained by dynamically heat-treating a thermoplastic resin and/or a rubbery substance in the presence of a crosslinking agent, or such composition with an inorganic filler incorporated therein, is subjected to the radiation of ultraviolet light not longer than 300 nm in wave length, whereby surface characteristics of the molded article can be improved without deterioration of such characteristics as rigidity, impact- and heat-resistance, dimensional stability and processability.
    Type: Grant
    Filed: November 22, 1991
    Date of Patent: November 30, 1993
    Assignees: Japan (Agency of Industrial Science and Technology), Nippon Petrochemicals Company, Limited
    Inventors: Kohichiroh Katoh, Motomi Nogiwa, Yoshiharu Iwasaki
  • Patent number: 5266241
    Abstract: A method of molding a deformable optic for a soft intraocular lens in which the optic has an opening therein for securely receiving a filamentary fixation member is disclosed. The method includes positioning a wire-like insert member in a mold for the optic at a location corresponding to the desired location of the opening, filling the mold about the wire-like insert member with a curable material selected to form the deformable optic, curing the material, and removing the wire-like insert member from the cured, molded optic.
    Type: Grant
    Filed: February 12, 1992
    Date of Patent: November 30, 1993
    Assignee: Iolab Corporation
    Inventor: Ramesh V. Parekh
  • Patent number: 5266136
    Abstract: A process for producing a roll stamper which molds a substrate sheet for information recording mediums by continuously transferring preformat patterns on a resin sheet. The roll stamper has the feature that the preformat pattern on the roll stamper has a value b/a of greater than 1, where the length of the preformat pattern in the direction parallel to the direction in which the resin sheet is transported is defined as a and the length in the direction perpendicular thereto as b.
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: November 30, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Osamu Kanome, Tsuyoshi Santoh, Hiroyuki Sugata, Masataka Yashima, Tetsuya Sato, Hitoshi Yoshino, Hirofumi Kamitakahara, Hisanori Hayashi
  • Patent number: 5264640
    Abstract: Scrap rubber chunks from used tires are processed and the monomeric chemicals from which the tire rubber was synthesized are recovered. Rubber chunks reduced to a finely divided size are exposed to gaseous ozone to break down the cross-linked structure of the rubber. Subsequent thermal depolymerization occurs in a reactor chamber. Finely divided silica is introduced within the reactor to prevent agglomeration of rubber particles and to enhance the maintenance of a uniform reactor temperature. Reduced pressure within the reactor permits rapid removal of monomer vapors. Once the monomer vapors are separated, silica and carbon residues are recovered separately for either recycle or disposal.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: November 23, 1993
    Assignees: S-P Reclamation, Inc., John S. Schwab
    Inventor: Gerald M. Platz
  • Patent number: 5264161
    Abstract: An improved method for manufacturing hydrophilic polymeric devices wherein surfactants are added to the hydration bath to assist in the mold release and processing of hydrophilic polymeric devices, especially hydrophilic contact lenses.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: November 23, 1993
    Assignee: Bausch & Lomb Incorporated
    Inventors: Robert J. Druskis, Rose Ann Milne, Dennis Hahn
  • Patent number: 5264162
    Abstract: A process for manufacturing porous tubes made from carbon-carbon composite material by winding over a mandrel a non-woven sheet, made from a carbon fiber precursor, followed by compression and hot stabilisation of the assembly, with impregnation of the compressed sheet by a resin, followed by a thermal carbonisation treatment of the resin. Tubes are obtained having high permeability, small pore diameter and an inner surface of low rugosity. The tubes produced ar particularly suitable for the manufacture of filtration elements and of filtering membrane supports.
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: November 23, 1993
    Assignee: Pechiney Recherche
    Inventors: Jean Salem, Christophe Bommier
  • Patent number: 5262104
    Abstract: Pyrolytic carbon products are manufactured so as to have improved structural properties. Pyrolytic carbon is deposited on a substrate in a fluidized bed of small particles at a temperature of about 1200.degree. to about 1400.degree. C., and after cooling to ambient temperature, the pyrolytic carbon is machined to desired physical dimensions for a heart valve component or the like. By heating such pyrolytic carbon structures in an inert gas atmosphere to a temperature in the range of about 1000.degree.-1500.degree. C. for at least about one hour following machining, it is found that stresses created in the pyrolytic carbon as a result of the machining are relieved without adverse effect to mechanical properties of the pyrocarbon, resulting in components having greater structural integrity.
    Type: Grant
    Filed: August 25, 1992
    Date of Patent: November 16, 1993
    Assignee: Carbon Implants, Inc.
    Inventor: Alan S. Schwartz
  • Patent number: 5262097
    Abstract: New intraocular lenses, fixation member assemblies for use in such lenses and methods for making the same. In one embodiment, the present invention involves a method for producing a fixation member assembly which includes exposing a fixation member component to a first plasma at conditions effective to enhance, relative to a substantially identical fixation member component which is not subjected to the exposing step, the bondability between the fixation member component and a polymeric coating to be located on the fixation member component; and exposing the fixation member to a second plasma in the presence of at least one material selected from polymeric components, polymerizable components and mixtures thereof at conditions effective to form the polymeric coating located on the fixation member component. Enhanced bondability between the polymeric coating-containing fixation member component and the optic of the intraocular lens and/or enhanced biocompatibility are preferably provided.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: November 16, 1993
    Assignee: Allergan, Inc.
    Inventors: F. Richard Christ, James E. Francese, Bernard F. Grisoni
  • Patent number: 5261988
    Abstract: A large-diameter plastic pipe is made by extruding from an extruding-nozzle assembly a hollow thermoplastic strip having an outer rectangular cross section and formed with longitudinally extending outer walls and webs having inner surfaces and defining a plurality of longitudinally extending internal cells separated by the webs from one another. Substantially only the inner surfaces of the outer walls and the cell-forming webs are then cooled to size the strip and provide it with a predetermined compressive strength stable up to a predetermined critical pressure of the design strength while externally shielding external surfaces of the strip and thereby preventing cooling of same.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: November 16, 1993
    Assignee: George A. Petzetakis
    Inventors: Byron Dikis, John Charaktinos
  • Patent number: 5259998
    Abstract: A method for making a biosoluble collagen or gelatin ophthalmic shield, which optionally contains a pharmaceutically active agent, by casting collagen or gelatin in a mold; chilling the mold with the collagen or gelatin shield until the shield is strong enough to allow the mold to be opened without deforming the shield in one half of the mold; drying the collagen or gelatin shield while it is still in the mold; and then cross-linking the collagen or gelatin shield to achieve the desired solubility. The resulting shield can be worn comfortably in the eye and leaves no observable material after complete dissolution and drug release.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: November 9, 1993
    Assignee: Chiron Ophthalmics, Inc.
    Inventors: Cary Reich, Jean Toner-Webb
  • Patent number: 5259999
    Abstract: A process for producing a resin molded article having a diminished residual stress, which includes heating an injection-molded article of a thermoplastic resin by means of a combination of far infrared radiation with far infrared ray having a frequency of from 10.sup.11 to 10.sup.14 Hz and hot-air flow, thereby to diminish a residual stress in the molded article in a short period of time.
    Type: Grant
    Filed: January 8, 1992
    Date of Patent: November 9, 1993
    Assignee: Mitsubishi Gas Chemical Co., Inc.
    Inventors: Tsuneaki Iwakiri, Toshiaki Izumida, Masanori Iwaki, Chikara Sadano