Including Coating Or Adherent Layer Patents (Class 249/114.1)
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Publication number: 20090014145Abstract: The present invention relates to wash compositions which comprise a solvent component and a solids component wherein the solvent component comprises as main component water or one or more alcohols, and the solids component comprises as main component a mixture of metakaolinite and pyrophyllite, which can be applied onto casting moulds, casting moulds comprising these wash compositions and the use thereof, in particular in centrifugal casting processes and large-scale casting processes.Type: ApplicationFiled: December 2, 2005Publication date: January 15, 2009Applicant: ASHLAND-SÜDCHEMIE-KERNFEST GMBHInventors: Reinhard Stotzel, Herbert Pitamitz, Gernot Lederer
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Patent number: 7441745Abstract: A mold and a process for producing a base material having a transferred micropattem, wherein the mold comprises a transparent substrate having chemical bonds resulting from functional groups (x) on a surface on which an interlayer (A) is formed, the interlayer (A) present between the surface of the transparent substrate and a surface layer (B) which has a micropattem for molding a photocurable resin, wherein interlayer (A) is a layer made of a fluoropolymer (1) which is a fluoropolymer having a fluorinated alicyclic structure in its main chain and which has reactive groups (y) reactive with functional groups (x), and surface layer (B) is a layer made of a fluoropolymer (2) which is a fluoropolymer having a fluorinated alicyclic structure in its main chain and which has substantially no reactive groups (y).Type: GrantFiled: May 29, 2007Date of Patent: October 28, 2008Assignee: Asahi Glass Company, LimitedInventors: Yasuhide Kawaguchi, Yoshihiko Sakane, Daisuke Shirakawa
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Publication number: 20080259457Abstract: For generation of optical elements, a master prototype, a resin master, a resin molded article or a metal mold is used. In the master prototype, the resin master, the resin molded article or the metal mold, a fine relief structure is formed on a plane through which an object light is transmitted at a pitch smaller than a wavelength band of the object light, an identification pattern region is disposed in a part of a region where fine relief structure is formed, and in the identification pattern region, a state of the fine relief structure is different from that in the other region. An actual manufacturer of the master prototype, the resin master, the resin molded article or the metal mold can be identified by physically verifying the identification pattern region.Type: ApplicationFiled: April 18, 2008Publication date: October 23, 2008Applicants: Sanyo Electric Co., Ltd., Sanyo Optec Design Co., Ltd.Inventors: Kazuaki Someya, Yoshiaki Maeno
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Publication number: 20080254286Abstract: A mold surface of an upper mold with which a fluid resin comes into contact has an oxide therein. The oxide contains a metal cation and an ion. Field strength is calculated based on a valence of the metal cation and ionic radius of the ion. Based on predetermined relationship established between a value of the field strength and adhesion strength between a cured resin and the mold surface, releasability between the cured resin and the mold surface is evaluated. Thereby, a method of evaluating releasability between the cured resin and the mold surface is established. With this evaluation method, a material with high releasability can readily be provided. Further, if the material with high releasability is used for the mold surface of the upper mold, a mold for molding a resin having excellent releasability can be obtained.Type: ApplicationFiled: March 3, 2005Publication date: October 16, 2008Inventors: Takaki Kuno, Keiji Maeda, Yoshinori Noguchi, Satoshi Kitaoka, Naoki Kawashima, Seiichi Suda, Masato Yoshiya, Norio Yamaguchi
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Publication number: 20080251967Abstract: A camera for capturing a casting bead is provided at each side end of a discharge port in a width direction thereof. Plural speakers are provided at the vicinity of an opening of a decompression chamber. The camera continuously captures the casting bead, and outputs image data thereof to a control unit. The control unit includes a vibration detector and a suppressing vibration generator. The vibration detector detects vibration of the casting bead based on the plural image data. The suppressing vibration generator generates suppressing vibration signal representing the phase and amplitude of the suppressing vibration for suppressing the vibration generated in the thickness direction of the casting bead. The control unit controls the speakers based on the suppressing vibration signal to output sound wave. Thereby, the suppressing vibration is applied to the casting bead.Type: ApplicationFiled: April 11, 2008Publication date: October 16, 2008Applicant: FUJIFILM CORPORATIONInventor: Yukihiro KATAI
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Publication number: 20080254570Abstract: A method of making a mold includes forming spaced mold cavities in a mold body. The mold cavities include geometrically similar portions, but have respective depths below an initial reference surface that vary as a function of position along a particular direction. The mold cavities can be formed using anisotropic etching of preferred crystal directions in single crystal materials such as silicon. A portion of the mold material adjacent the initial reference surface is removed to expose a new reference surface at a tilt angle with respect to the initial reference surface. The modified mold cavities have their respective axes at a new desired tilt angle relative to the new reference surface.Type: ApplicationFiled: January 28, 2008Publication date: October 16, 2008Applicant: Metadigm LLCInventor: Victory B. Kley
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Publication number: 20080248334Abstract: To provide a mold structure which is excellent in the transfer quality of a pattern to a substrate and superior in its separability from an imprint resist layer and which allows a high-quality pattern to be transferred and formed on discrete track media and patterned media. Specifically, there is a mold structure including: convex portions and concave portions formed on its surface, wherein the mold structure is used for transferring a concavo-convex pattern onto an imprint resist layer formed on a surface of a substrate having a thickness of 0.3 mm to 2.0 mm by pressing the convex portions and the concave portions against the imprint resist layer, and wherein a ten-point average roughness Rz1 of apical portions of the convex portions and a ten-point average roughness Rz2 of bottom portions of the concave portions are in the range of 0.5 nm to 20 nm each.Type: ApplicationFiled: March 31, 2008Publication date: October 9, 2008Applicant: FUJIFILM CorporationInventors: Kenichi Moriwaki, Masakazu Nishikawa
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Publication number: 20080248333Abstract: The present invention provides a mold structure including: a concavo-convex pattern formed on its surface, wherein the mold structure is used for transferring the concavo-convex pattern onto an imprint resist layer formed on a surface of a substrate having a thickness of 0.3 mm to 2.0 mm by placing the concavo-convex pattern against the imprint resist layer, and wherein a thickness Dm (mm) of the mold structure, a thickness Ds (mm) of the substrate and an area Si (mm2) of the mold structure satisfy the Relationship 1.0?(Dm/Ds)×S11/2?100.Type: ApplicationFiled: March 28, 2008Publication date: October 9, 2008Applicant: FUJIFILM CorporationInventors: Kenichi MORIWAKI, Masakazu Nishikawa
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Patent number: 7419071Abstract: A flexible, silicone mold having a bowl and a peripheral rim that defines an opening to the bowl. Two substantially flat grasping zones are disposed along substantially opposite ends of the rim and the grasping zones have sufficient dimensions to permit control of the geometry of the rim and also to permit control of the horizontal positions of the two grasping zones.Type: GrantFiled: May 27, 2004Date of Patent: September 2, 2008Assignee: Mastrad SAInventor: Mathieu Lion
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Publication number: 20080203271Abstract: There are provided a replica mold which is excellent in transferring a pattern of a master mold, and also has notably excellent hardness, transparency, heat resistance and chemical resistance, and a simple and inexpensive method of manufacturing the replica mold. A method of manufacturing a replica mold according to the present invention includes the steps of: applying, to a substrate, a replica mold material containing a polysilane and a silicone compound; pressing a master mold on which a predetermined minute pattern has been formed to the replica mold material which has been applied to the substrate; irradiating energy rays from a side of the substrate while the master mold is contacted by press with the replica mold material; releasing the master mold; and irradiating the replica mold material with energy rays from a side to which the master mold has been pressed.Type: ApplicationFiled: August 27, 2007Publication date: August 28, 2008Applicants: RIKEN, NIPPON PAINT CO., LTDInventors: Motoki Okinaka, Kazuhito Tsukagoshi, Yoshinobu Aoyagi, Hiroshi Tsushima
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Publication number: 20080203272Abstract: A pressing mold for use in press working of a material includes a mold body, a coating film formed on the portion of the pressing mold that comes into contact with the material in the press working, the coating film being formed by PVD method. The coating film includes a TiN layer formed on a surface of the mold body, a Ti(CxNy) layer (wherein, x+y=1, x<1, and x gradually increases to 1 as it becomes more distant from the surface of the TiN layer) formed on the TiN layer, and a TiC layer formed on the Ti(CxNy) layer.Type: ApplicationFiled: December 3, 2007Publication date: August 28, 2008Applicant: Toyo Advanced Technologies Co., Ltd.Inventors: Hiroshi Fujiwara, Ichiro Kanba, Tadashi Takano
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Patent number: 7377478Abstract: A light guide plate which is made of a transparent resin and has a first main surface and a second main surface opposite to said first main surface, said first main surface having a surface portion provided with convex portions having a height of 5×10?7 m to 6×10?5 m each and a pitch of 5×10?7 m to 4×10?4 m, each convex portion having a tip portion, and the convex portions of at least 80% of the total convex portions having the tip portions having a radius of curvature of 2×10?6 m or less.Type: GrantFiled: January 26, 2006Date of Patent: May 27, 2008Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Hisashi Tahara, Akimasa Kaneishi
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Patent number: 7377477Abstract: Product forming molds have surfaces conformally coated with a coating composite comprising superabrasive particles. In one embodiment, the mold surface is plated (electrolessly or electrolytically) or coated with a metal having superabrasive particles dispersed therein. In another embodiment, the composite is a SiC composite having superabrasive particles dispersed therein.Type: GrantFiled: February 11, 2005Date of Patent: May 27, 2008Assignee: Diamond Innovations, Inc.Inventors: John William Lucek, Marc Gary Davidson, Timothy F. Dumm
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Publication number: 20080115904Abstract: A lightweight mold structure is disclosed, which includes a metal layer and a polymer filled with metal support. The support provides strength to the mold, without the added weight of a solid metal structure. The metal utilized in the polymer is preferably a plurality of metal spheres. Methods of forming the lightweight mold are also disclosed.Type: ApplicationFiled: November 16, 2006Publication date: May 22, 2008Applicant: GMIC, Corp.Inventor: Edmund Aversenti
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Publication number: 20080105996Abstract: A reusable, low investment tool for making parts is made by a process in which a mixture of sand and an activator is applied as a layer onto which a printed resin is deposited to form a base and a pattern. A plurality of sidewalls may also be provided on the base using the same process. The tool is coated with a curable resin to form a protective shell. The reusable tool may be used as a dump box or as a vacuum forming tool for forming parts. A stamping die may be formed by drawing a vacuum through the sand layer as the resin coating is applied to more fully permeate the stamping die.Type: ApplicationFiled: November 7, 2006Publication date: May 8, 2008Applicant: FORD MOTOR COMPANYInventors: James Todd Kloeb, Harold Sears, Lawrence E. Ellis
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Publication number: 20080099658Abstract: The present invention includes methods and appartus for facilitating release of an ophthalmic lens from a mold part used to fashion the lens. Subsequent to formation of the lens, the lens may be adhered to the mold part and a lens swelling substance is utilized to cuase a portion of the lens to separate from the mold part and create a pathway for a hydration solution to enter between teh lens and the mold part an effect release of the lens.Type: ApplicationFiled: October 1, 2007Publication date: May 1, 2008Inventors: Vandana Srinivas, Stephen R. Beaton, Stephen C. Pegram
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Publication number: 20080093047Abstract: Disclosed herein are molds coated for surface enhancement, methods of making the molds, and methods of casting using such molds. In one embodiment, a mold comprises: a mold member comprising copper; and a coating disposed on at least a portion of a surface of the mold member, wherein the coating has a coefficient of thermal expansion of about 10×10?6/° C. to about 16.5×10?6/° C. and a Vickers Hardness Number of greater than about 500 and less than about 1200 at a temperature of less than or equal to about 600° C.Type: ApplicationFiled: October 18, 2007Publication date: April 24, 2008Applicant: Inframat CorporationInventors: Xinqing Ma, T. Danny Xiao
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Publication number: 20080029686Abstract: The invention provides a reusable precision fabricated silicon mold comprising a mold made of silicon which comprises a desired pattern of physical features cavities etched into the mold to transfer a patter on bumps to a semiconductor wafer, e.g., computer chip, semiconductor device, silicon on insulator device, etc.; an aperture etched into the mold adapted to allow gases to escape but does not to allow a solder to escape during the process of transferring solder bumps to a chip; a protective oxide or nitride on the mold; alignment marks adapted to properly align the mold with a semiconductor wafer; an organic release material on the mold adapted to release the mold from the semiconductor wafer, wherein the mold precisely defines a conductive adhesive material volume for interconnects on the semiconductor wafer.Type: ApplicationFiled: August 4, 2006Publication date: February 7, 2008Applicant: International Business Machines CorporationInventors: Peter A. Gruber, John U. Knickerbocker
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Publication number: 20080026139Abstract: Disclosed is: (i) a mold-spraying apparatus of a molding system and/or (ii) a molding system having a mold-spraying apparatus, and/or (iii) a method of a mold spraying apparatus of a molding system, and/or (vi) a method of a molding system having a mold-spraying apparatus, amongst other things.Type: ApplicationFiled: March 23, 2007Publication date: January 31, 2008Applicant: HUSKY INJECTION MOLDING SYSTEMS LTD.Inventors: Jacek Kalemba, Josef Graetz
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Publication number: 20070273826Abstract: A lens mold assembly and optical lens made by it. The lens mold assembly comprises: a lower mold, in each of four corners of the top surface of the lower mold is formed a protrusion, a polarizing film is disposed in an area defined by the four protrusions of the lower mold; and an upper mold, a space is defined between the bottom surface of the upper mold and a top surface of the lower mold, so that melted plastic material is poured into the space to form an optical lens after solidification. The polarizing film is attached to the optical lens at the right angle and position.Type: ApplicationFiled: March 12, 2007Publication date: November 29, 2007Inventor: Shen Zhi Chen
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Publication number: 20070273064Abstract: A hard mold and method of preparing the mold is disclosed. The hard mold is designed for manufacturing articles having various shapes and patterns. The shaping mold includes a layer of hardened material provided over the entire surface of the selected master. The inventor has found that a polyurea coating or other polyurethane hybrid is preferred. Once the layer of hardened material has dried, the surface of the hardened material is sanded with a 20-40 grit sandpaper and a layer of polyester resin is then applied to the layer of hardened material. Once the polyester resin is applied, multiple layers of vinyl ester are applied to the polyester resin to prevent the polyester resin from shrinking. In the preferred embodiment, the application includes at least three (3) layers of vinyl ester.Type: ApplicationFiled: May 29, 2007Publication date: November 29, 2007Inventor: Richie Johnson
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Patent number: 7290751Abstract: A composite mold comprising a main body, a molding layer formed on the main body, and a protective layer formed on the molding layer, the protective layer being made from diamond-like carbon. A method for manufacturing the composite mold comprising the following steps: providing a main body; forming a molding layer on the main body; and forming a protective layer on the molding layer, the protective layer being comprised of diamond-like carbon.Type: GrantFiled: May 24, 2006Date of Patent: November 6, 2007Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Ga-Lane Chen
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Patent number: 7273204Abstract: A mold 50 for forming optical lenses has a molding portion 10 having a molding surface 12, a thin film 30 is formed on the molding surface, which is made from SiCHxNy, wherein x is in the range of 0.02˜0.10, y is in the range of 0.05˜0.30. A method for manufacturing the mold is also provided.Type: GrantFiled: March 8, 2006Date of Patent: September 25, 2007Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Ga-Lane Chen
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Patent number: 7272879Abstract: A molding die for molding glass and renewal method thereof. The molding die includes a substrate, a nickel-phosphorous alloy layer, with phosphorous content 30 wt % or less, overlying the substrate, an intermediate layer overlying the nickel-phosphorous alloy layer, and a passivation film overlying the intermediate layer.Type: GrantFiled: July 1, 2004Date of Patent: September 25, 2007Assignee: Asia Optical Co., Inc.Inventor: Jui-Fen Pai
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Publication number: 20070200278Abstract: A porous bat may be used on a pottery wheel including a locating pin at a nominal location. The porous bat includes an elongated hole at a location corresponding to the nominal location. The elongated hole is adapted to slidably fit over the locating pin. The hole has a first axis with a dimension sized to fit over the locating pin and a second axis with a dimension larger than the first dimension to compensate for variations in the location of the locating pin on the pottery wheel.Type: ApplicationFiled: February 28, 2006Publication date: August 30, 2007Inventor: Sam Lester
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Patent number: 7255553Abstract: A light guide plate mold core (1) includes a main body (13) having a molding surface (12) and a plurality of concavities (13a) formed at the molding surface. The main body is made of a material whose thermal conductivity is limited in the range from 0.002 cal/cm.s.K. (calories/centimeter.second.Kelvin) to 0.009 cal/cm.s.K. The thermal conductivity of the material for the light guide plate mold core is less than that of stainless steel. Therefore the rate of spreading of heat in the light guide plate mold core is lower than that of a conventional light guide plate mold core, so that stresses within a formed light guide plate can be released more. Thus by using the light guide plate mold core, a light guide plate having a highly even bottom surface can be manufactured. A method for manufacturing the light guide plate mold core is also provided.Type: GrantFiled: July 26, 2004Date of Patent: August 14, 2007Assignee: Hon Hai Precision Ind. Co., Ltd.Inventors: Charles Leu, Tai-Cherng Yu, Ga-Lane Chen
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Publication number: 20070170345Abstract: An ice tray unit is configured to be used in a refrigerator. The ice tray unit includes a mounting section configured to be mounted to the refrigerator, and a tray coupled to the mounting section. The tray is made of metal. The tray includes a box section configured to pool water, and partition plates coupled with the box section. The tray is independent from the mounting section. The partition plates are independent from the box section. The ice tray unit provides a die for manufacturing it with a large durability.Type: ApplicationFiled: January 24, 2007Publication date: July 26, 2007Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Akinori TSUJIMOTO, Masatoshi SHOUKYUU
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Patent number: 7222657Abstract: A metal object is formed by die-casting with the use of a specially treated mold. The mold has cavity-defining surfaces covered by a heat-insulating layer made of a material that includes ceramic powder and heat-resistant resin. Molten metal is injected into the cavity coated with the heat-insulating layer.Type: GrantFiled: January 9, 2003Date of Patent: May 29, 2007Assignee: Fujitsu LimitedInventors: Koichi Kimura, Kota Nishii
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Patent number: 7223087Abstract: A mold for relatively uniform heating and molding of a work material to form a workpiece using a microwave oven, includes upper and lower mold members and a sidewall mold member. The mold members are formed from materials selected to have an approximately equal effective thermosensitivity. The effective thermosensitivity of work material is its dissipation factor divided by the product of its dielectric constant, density and specific heat. The effective thermosensitivity of the material of mold layer of each mold member is its dissipation factor divided by the product of its dielectric constant, density, and specific heat and multiplied by the fraction of the mass of its mold layer divided by the total mass of this mold member. A metal sleeve is formed on an inner surface of the sidewall mold member with microwave absorbing material formed on the outside thereof and inner surfaces of the end mold members may also be coated with metal or other highly thermally conductive and wear resistant material.Type: GrantFiled: June 15, 2004Date of Patent: May 29, 2007Inventor: Razmik Akopyan
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Patent number: 7182890Abstract: The invention relates to a matrix suitable for use in the replication of a plastic element having a positive microstructure, comprising a first wear-resistant layer that is supported by a carrier element, wherein the matrix comprises a heating means for supplying electrical heat energy through the wear-resistant layer or carrier element. The invention further relates to a plastic element producing machine and a method for the manufacture of a plastic element having a surface with a positive microstructure.Type: GrantFiled: December 2, 2004Date of Patent: February 27, 2007Assignees: Gyros Patent AB, Åmic ABInventors: Per Ove Öhman, Lars Rune Lundbladh
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Patent number: 7147199Abstract: A mold includes a mold insert body made of at least two kinds of materials. The materials have different coefficients of thermal conductivity. The mold insert body includes a union part formed by sintering the materials, and the union part has a configuration set so as to correspond to a cooling way of a molding material flowed in a cavity forming part of the mold.Type: GrantFiled: May 21, 2003Date of Patent: December 12, 2006Assignee: Sumitomo Heavy Industries, Ltd.Inventors: Yoshiyuki Imatomi, Tatsuro Araki
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Patent number: 7143990Abstract: An apparatus and method for the production of ophthalmic lenses, and particularly contact lenses, which minimizes damage of the lens in removal from the mold. The ophthalmic lens is produced in a mold having a male part and a female part that are placed in proximate relation to each other to create a lens-forming cavity. At least the female surface of the female part mold is preferably coated with plasma and is irradiated for a predetermined time such that the female surface and/or surface coating is at least partially cured. Once the female surface, and alternately the male surface and other surfaces of the mold, is at least partially cured, a curable lens-forming material is placed into the lens-forming cavity and cured to form an ophthalmic lens.Type: GrantFiled: March 26, 2002Date of Patent: December 5, 2006Assignee: Novartis AGInventors: Yasuo Matsuzawa, Harald Bothe, Bernhard Seiferling
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Patent number: 7094047Abstract: A die for extrusion molding of a honeycomb which comprises a structure provided with a groovy slit (2) formed by cell blocks (3) on a front face thereof, and additionally provided with a puddle inlet, on a back face thereof, communicatively connected with the slit (2), wherein each cell block (3) has a soft film (16) on a hard film (14) formed on outermost surfaces of the slit (2) and puddle inlet fabricated in a cell-block body (10). According to the die for extrusion molding of a honeycomb, a dimensional error of the die is possible to be eliminated, a stable force of extrusion friction is possible to be maintained, both extrusion moldability and abrasion resistance are possible to be excellent, and additionally an adjustment of the die at the time of extrusion molding can be performed easily.Type: GrantFiled: October 7, 2002Date of Patent: August 22, 2006Assignee: NGK Insulators, Ltd.Inventors: Kenji Yamada, Takashi Matsukubo, Keiji Matsumoto
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Patent number: 7028974Abstract: A lens molding die for producing a lens, which comprises a base member made of a hard material and having one surface of a predetermined shape; and a resin-molded layer formed on the one surface of the base member and having a surface shape corresponding to a predetemined shape of a lens to be molded. The resin-molded surface is to be made of a resin material which is inactive with a material which is to be molded by the lens molding die. The resin-molded layer is formed by introducing the material into the space formed between the one surface of the base member and a transfer surface formed on a transfer die correspondingly to the surface of a lens to be produced to be cured by heat or ultraviolet rays.Type: GrantFiled: May 19, 2000Date of Patent: April 18, 2006Assignee: PENTAX CorporationInventor: Toru Chiba
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Patent number: 7018195Abstract: A device or method for flaring nylon or plastic tubings while on a tube-bending fixture, without the necessity of flaring in the assembly process so the tube can be inserted with a coupler or connector. A first embodiment includes a tapered post having a bi-metallic spring mounted thereon. A second embodiment includes a tapered movable piston for forming the flare in the tube.Type: GrantFiled: December 4, 2002Date of Patent: March 28, 2006Inventor: Richard Lee Stone
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Patent number: 7000886Abstract: There is disclosed a molding for architectural concrete forming. The molding may be manufactured by applying a coating to a stock. The architectural molding may be rendered better-suited to certain environmental conditions or for certain uses by applying appropriate coatings.Type: GrantFiled: May 23, 2003Date of Patent: February 21, 2006Assignee: Loveday Lumber, Inc.Inventors: Gregory M. Greif, Ronald T Burr
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Patent number: 6986857Abstract: This invention relates to a method for preparing at least one mold part of a two-part mold useful for transferring a hydrophobic top coat from a mold onto an optical substrate. Further, the invention relates to a method for easily transferring a hydrophobic top coat from a mold onto the anti-reflecting coating of a coated optical substrate. Additionally, the invention relates to a method which provides improved adhesion of the hydrophobic top coat onto an optical substrate and in particular onto an anti-reflecting coating of a coated optical substrate. The invention also discloses a mold part useful in such methods.Type: GrantFiled: June 19, 2003Date of Patent: January 17, 2006Assignee: Essilor International Compagnie Generale D'OptiqueInventors: Karl Arthur Klemm, Julie Anne Fairbank
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Patent number: 6948695Abstract: A soft plastic fishing lure or other product may be made to float by incorporating air bubbles therein by molds that draw air from inside the molds in which the lures or products are cast.Type: GrantFiled: February 19, 2003Date of Patent: September 27, 2005Assignee: Knight Manufacturing Co., Inc.Inventor: Michael R. Clark
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Patent number: 6913715Abstract: This invention relates to the preparation of molds for the production of contact lenses and other ophthalmic articles. By using an inorganic material to coat the optical surfaces and sidewalls of mold parts made from clear-resin materials, manufacturers can produce lens molds with greater dimensional stability and chemical resistance. In addition to protecting the clear resin from interaction with otherwise reactive monomers from which the molded article is made, such coatings can also be used to achieve preferential release of the molded article. The resulting mold is especially useful for providing an economical way to improve manufacturing quality of contact lenses.Type: GrantFiled: March 12, 2003Date of Patent: July 5, 2005Assignee: Bausch & Lomb IncorporatedInventors: Hongwen Li, Dominic V. Ruscio, Yu Chin Lai, Horngyih Huang
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Patent number: 6884370Abstract: The invention relates to a matrix suitable for use in the replication of a plastic element having a positive microstructure, comprising a first wear-resistant layer that is supported by a carrier element, wherein the matrix comprises a heating means for supplying electrical heat energy through the wear-resistant layer or carrier element. The invention further relates to a plastic element producing machine and a method for the manufacture of a plastic element having a surface with a positive microstructure.Type: GrantFiled: August 2, 2002Date of Patent: April 26, 2005Assignees: Amic AB, Gyros ABInventors: Per Ove Öhman, Lars Rune Lundbladh
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Patent number: 6875379Abstract: Tools and methods for making molded an optical integrated circuit including one or more waveguides are disclosed. In one embodiment, a molding die is provided that includes a substrate that has a topographically patterned first surface. A conformal protective film is provided over the first surface of the substrate. The substrate may be formed of silicon or gallium arsenide, and may be patterned using conventional semiconductor patterning techniques, such as plasma etching. The protective film may be metal (e.g., nickel or titanium), diamond, or some other hard material. Typically, a plurality of such molding dies are formed from a wafer of the substrate material. The die is pressed into a moldable material, such as thermal plastic, to form the wave guide(s) of the optical integrated circuit. A plurality of the dies may be mounted around the curved surface of a heated roller, and a heated tape of the waveguide material may be fed under the roller in a mass production process.Type: GrantFiled: December 29, 2000Date of Patent: April 5, 2005Assignee: Amkor Technology, inc.Inventors: Thomas P. Glenn, Steven Webster
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Patent number: 6863514Abstract: The present invention relates to an optical fiber recoating device, and to an improvement in the molds employed in this device. The optical fiber recoating device is provided for filling a recoating resin into molds, wherein semicircular mold grooves in molds into which the recoating resin is filled are longer than a bare fiber portion of an optical fiber, and an outer diameter of mold groove is larger than the outer diameter of semicircular sheath engaging grooves that engage a sheath of the optical fiber. As a result, a cylindrically shaped extending portion which extends to the sheath is formed to each end of the recoated sheath, so that joining strength of the recoated sheath is improved.Type: GrantFiled: October 10, 2002Date of Patent: March 8, 2005Assignee: Fujikura Ltd.Inventors: Junichi Suzuki, Yoshinori Kanai, Manabu Fujisawa
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Patent number: 6852420Abstract: According to the present invention, there is provided a mold constituted by an electrically conductive thin plate having a predetermined surface shape, and an electrically insulating reinforcement material, wherein the electrically conductive thin plate and the electrically insulating reinforcement material are bonded to each other by an anodic bonding method. Particularly, the electrically conductive thin plate is preferably formed out of silicon single crystalline and the electrically insulating reinforcement material is preferably oxide glass.Type: GrantFiled: December 4, 2001Date of Patent: February 8, 2005Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Hiroaki Yamamoto, Masahiro Hori, Koichiro Nakamura, Kenichi Nakama, Katsuhide Shimmo
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Publication number: 20040232309Abstract: There is disclosed a molding for architectural concrete forming. The molding may be manufactured by applying a coating to a stock. The architectural molding may be rendered better-suited to certain environmental conditions or for certain uses by applying appropriate coatings.Type: ApplicationFiled: May 23, 2003Publication date: November 25, 2004Applicant: LOVEDAY LUMBER, INC.Inventors: Gregory M. Greif, Ronald T. Burr
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Publication number: 20040222349Abstract: A device, preferably a micro-device, is molded from a plastic material by injection molding, compression molding or embossing. A microabrader can be molded having microneedles for abrading the stratum corneum of the skin to form an abraded site in the tissue for enhancing drug delivery. The micro-device is molded using a mold assembly having a silicon molding surface. The silicon molding surface can include a recess corresponding to the desired shape and length of the microneedles. The silicon molding surface enables micron and submicron size features to be molded from polymeric materials without the polymeric material adhering to the mold surface. Micro-devices having molded features having micron and submicron dimensions can be rapidly produced without the use of a release agent.Type: ApplicationFiled: July 24, 2003Publication date: November 11, 2004Inventors: Kenneth G. Powell, Larry A. Monahan, Burton H. Sage
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Patent number: 6808155Abstract: Lay-up mold comprising a contoured metal frame having an overlying conformal coating of polyurethane.Type: GrantFiled: March 22, 2002Date of Patent: October 26, 2004Assignee: UCAR Carbon Company Inc.Inventor: Parme Gerald Anthony
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Publication number: 20040206881Abstract: A method is disclosed for the induction of a suitable band gap and electron emissive properties into a substance, in which the substrate is provided with a surface structure corresponding to the interference of electron waves. Lithographic or similar techniques are used, either directly onto a metal mounted on the substrate, or onto a mold which then is used to impress the metal. In a preferred embodiment, a trench or series of nano-sized trenches are formed in the metal.Type: ApplicationFiled: January 19, 2004Publication date: October 21, 2004Inventors: Avto Tavkhelidze, Jonathan Sidney Edelson, Isaiah Watas Cox, Stuart Harbron
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Patent number: 6732992Abstract: A mold for producing a silicon ingot having a layered structure comprising an inner silica layer containing at least one layer in which a fused silica powder with a particle size of 100 &mgr;m or less and a fine fused silica sand with a particle size of 100-300 &mgr;m is bonded with a silica binder, and an outer silica layer containing at least one layer in which a fused silica powder with a particle size of 100 &mgr;m or less and a coarse fused silica sand with a particle size of 500-1500 &mgr;m is bonded with a silica binder.Type: GrantFiled: August 24, 2001Date of Patent: May 11, 2004Assignee: Mitsubishi Materials CorporationInventors: Saburo Wakita, Akira Mitsuhashi, Jun-ichi Sasaki
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Patent number: 6692817Abstract: A method for forming a composite structure is disclosed. The method includes four steps. Step one calls for applying a primer (104) to a surface (102) of a tool (100). Step two requires applying a coating (106) to primer (104). Step three calls for curing primer (104) and coating (106). The last step calls for forming the composite structure on tool (100). More specifically, primer (104) may be a powdered primer, and coating (106) may be a powdered fluorinated organic compound.Type: GrantFiled: April 4, 2000Date of Patent: February 17, 2004Assignee: Northrop Grumman CorporationInventors: Ernie R. Silva, Jerry W. Brimer, Sandra J. Stash
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Patent number: 6676872Abstract: A device for stamping a detergent bar, i.e. a bar comprising soap, a synthetic detergent active or a mixture thereof, includes a die. The die has at least one bar stamping surface provided with at least one elastomeric coating which includes a conductive filler such as stainless steel powder. Good release of the detergent bars from the die is possible particularly when the dies are chilled. Use of the conductive filler facilitates chilling of the dies.Type: GrantFiled: December 30, 1997Date of Patent: January 13, 2004Assignee: Lever Brothers Company, division of Conopco, Inc.Inventors: Edward Ross Story, Daniel John Heinz, Pasquale Michael Buzzeo