Patents Examined by Hoa T. Le
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Patent number: 6420012Abstract: A toner carrier which carries a toner in the form of thin film on its surface, comes close to or comes into contact with the image-forming body so as to supply the toner to the surface of the image-forming body, thereby forming a visible image on the surface of the image-forming body, said toner carrier being characterized in that its conductive elastic layer has a coating layer thereon which is made of a material containing a resin with a glass transition point lower than 10° C. and has a dynamic elastic modulus (E′) of 107-109.8 dyn/cm2 and a loss tangent (tan &dgr;) smaller than 0.7. A toner carrier in which the electrically conductive elastic layer is formed from an elastic material having a tear strength greater than 10 kg/cm measured according to JIS K6252.Type: GrantFiled: July 20, 2000Date of Patent: July 16, 2002Assignee: Bridgestone CorporationInventors: Koji Takagi, Toshiaki Arai, Takao Ohuchi, Tokuo Okada
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Patent number: 6420029Abstract: Carrier particles having a coating comprising a polycondensation network containing a chemical compound selected from the group consisting of a monomeric polyfunctional organosilane, an hydrolysis product of a monomeric polyfunctional organosilane, a reaction product of a monomeric polyfunctional organosilane with an organosilane containing an hetero-atom and a reaction product of a monomeric polyfunctional organosilane with an alkoxide, characterized in that the coating further comprises between 5% and 50%, by weight, both limits included, of a polymeric compound not containing silicon atoms.Type: GrantFiled: November 22, 1999Date of Patent: July 16, 2002Assignee: Xeikon InternationalInventors: Serge Tavernier, Daniel Heitzmann
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Patent number: 6420030Abstract: Black iron-based composite particles of the present invention comprise: as a core particle black iron oxide particle or black iron oxide hydroxide particle having an average particle size of 0.08 to 1.0 &mgr;m; a coating layer formed on the surface of the black iron oxide particle or black iron oxide hydroxide particle, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtained from alkoxysilane compounds, (2) polysiloxanes, or modified polysiloxanes and (3) fluoroalkyl organosilane compounds obtained from fluoroalkylsilane compounds; and carbon black coat formed on said coating comprising said organosilicon compound, in an amount of 1 to 30 parts by weight based on 100 parts by weight of said black iron oxide particles or black iron oxide hydroxide particles.Type: GrantFiled: March 8, 2000Date of Patent: July 16, 2002Assignee: Toda Kogyo CorporationInventors: Kazuyuki Hayashi, Yasuyuki Tanaka, Hiroko Morii
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Patent number: 6416864Abstract: Black magnetic toner comprising: a binder resin, and black magnetic composite particles comprising: magnetic iron oxide particles having an average particle diameter of 0.055 to 0.95 &mgr;m; a coating layer formed on the surface of said magnetic iron oxide particles, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, (2) polysiloxanes or modified polysiloxanes, and (3) fluoroalkyl organosilane compounds obtainable from fluoroalkylsilane compounds; and a carbon black coat formed on said coating layer comprising said organosilicon compound, in an amount of 1 to 25 parts by weight based on 100 parts by weight of said magnetic iron oxide particles. Such a black magnetic toner can be free from being deteriorated in electric resistance due to the existence of the carbon black coat, and as a result, is suitable as a high-resistance or insulated magnetic toner.Type: GrantFiled: April 3, 2000Date of Patent: July 9, 2002Assignee: Toda Kogyo CorporationInventors: Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka, Seiji Ishitani
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Patent number: 6413638Abstract: Finely divided particles can be provided in a simple manner and with good adhesion with a coating which is a polyfunctional organosilane and/or a hydrolysis product thereof, and/or a reaction product thereof with an organosilane which contains a hetero atom and/or with an alkoxide.Type: GrantFiled: December 9, 1999Date of Patent: July 2, 2002Assignee: Agfa Gevaert AGInventors: Michael Mager, Johannes Eickmans, Rainer Bellinghausen, Serge Tavernier, Raf Voets
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Patent number: 6413646Abstract: The present invention is directed to acyl and carbonate blocked phenolic silanes of the general structural formula is: (RIC(═O)O)yC6RII6−y−z[CxH2xSi(ORIII)3−a(RIV)a]z where RI is H, CH3 or RVO; RII is H or RVO; RIII is alkyl, phenyl or acyl from 1 to 6 carbon atoms; RIV is hydrogen, alkyl or phenyl from 1 to 6 carbon atoms; RV is a linear or branched alkyl group from 1 to 4 carbon atoms; y is an integer from 1 to 3; z is an integer from 1 to 3; x is an integer from 2 to 6 and a is an integer from 0 to 2.Type: GrantFiled: July 29, 1999Date of Patent: July 2, 2002Assignee: Crompton CorporationInventors: Eric R. Pohl, Scot M Turner
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Patent number: 6413639Abstract: The Mg—Al-based hydrotalcite-type particles according to the present invention have a plate surface diameter as large as from 0.1 to less than 1.0 &mgr;m, an adequate thickness ranging from 0.02 to 0.08 &mgr;m and a heat-resisting time of not less than 160 minutes when measured by a specific method, and are, therefore, suitable as a stabilizer for chlorine-containing resins.Type: GrantFiled: August 4, 2000Date of Patent: July 2, 2002Assignee: Toda Kogyo CorporationInventors: Naoya Kobayashi, Torayuki Honmyo, Tsutomu Katamoto, Akinori Yamamoto
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Patent number: 6413627Abstract: A freestanding GaN single crystal substrate is made by the steps of preparing a (111) GaAs single crystal substrate, forming a mask having periodically arranged windows on the (111) GaAs substrate, making thin GaN buffer layers on the GaAs substrate in the windows of the mask, growing a GaN epitaxial layer on the buffer layers and the mask by an HVPE or an MOC, eliminating the GaAs substrate and the mask away and obtaining a freestanding GaN single crystal substrate. The GaN single crystal has a diameter larger than 20 mm and a thickness more than 0.07 mm, being freestanding and substantially distortion-free.Type: GrantFiled: June 15, 1999Date of Patent: July 2, 2002Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kensaku Motoki, Takuji Okahisa, Naoki Matsumoto, Tatsuya Nishimoto
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Patent number: 6406786Abstract: Consolidated or composite lignocellulosic products such as fiberboard, particle board, chipboard, waferboard, plywood, straw composites, etc. are formed by using a particulate binder or adhesive constituting particles of crude cellulose polysaccharide materials, e.g. wood flour or ground straw, coated with MDI or other isocyanate binder in a thickness preferably in the range of 1-7 &mgr;m.Type: GrantFiled: August 13, 1999Date of Patent: June 18, 2002Assignee: Carbocol Systems Inc.Inventor: John I. Stofko
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Patent number: 6399201Abstract: A powder comprising a blowing agent powder core which is coated with at least one oil-like substance on its surface, and a process for producing a powder comprising a blowing agent powder core which is coated with at least one oil-like substance on its surface, comprising the following steps (a) and (b): (a) adding at least one oil-like substance in the form of a mist to a blowing agent powder; and (b) mixing the oil-like substance with the blowing agent powder under such mixing conditions that the blowing agent powder is less susceptible to pulverization.Type: GrantFiled: July 10, 1998Date of Patent: June 4, 2002Assignee: Otsuka Chemical Co., Ltd.Inventors: Tsukasa Maekawa, Toshinori Takao, Sadafumi Shono, Chiaki Yasumaru, Shigeru Sumitomo, Nobuyuki Ueda, Yoshifumi Tachi
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Patent number: 6399202Abstract: Gas-diffusion electrodes containing modified carbon products are described wherein the modified carbon product is a carbon product having attached at least one organic group. The modified carbon product can be used for at least one component of the electrodes such as the active layer and/or the blocking layer. Methods to extend the service life of electrodes as well as methods to reduce the amount of fluorine containing compounds are also described.Type: GrantFiled: October 12, 1999Date of Patent: June 4, 2002Assignee: Cabot CorporationInventors: Yuan Yu, Laurent Kosbach
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Patent number: 6391454Abstract: Controlled release urea-based feed supplements for ruminant animals and controlled release urea-based plant nutrients are comprised of particles or granules comprised in whole or in principal part of urea or having urea at or on the exterior surfaces thereof, and a moisture resistant interpenetrating polymer network coating on the particles comprised of the reaction products of urea and a polyisocyanate, and the reaction products of polyisocyanate, an alkyd resin having at least one double bond in each repeat unit and an oil having at least one double bond, the double bonds being reactive with one another and with themselves. The coated plant nutrients have a substantially linear rate of release of nutrients to the soil over a controlled period of time, e.g., 30 to 120 days. The coated ruminant feed supplements have a substantially linear rate of NPN release in the rumen over a controlled period of time, e.g., 12 to 24 hours.Type: GrantFiled: March 16, 2000Date of Patent: May 21, 2002Assignee: Agway Inc.Inventors: Lijun Mao, Xiaoming Yang, Robert J. Petcavich
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Patent number: 6391448Abstract: Liquid is purified by passing it through a bed containing disc-shaped buoyant media beads having grooved surfaces. Such beads are formed from a polymeric pellets. The pellets are passed through a scarifier to roughen their surfaces. Pellets are also passed through a rolling mill which grooves the pellets and compresses them into disc-like shapes.Type: GrantFiled: November 9, 1994Date of Patent: May 21, 2002Assignee: United States Filter CorporationInventor: Kurt M. Geiser
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Patent number: 6391453Abstract: A binder is applied to particles which are then combined with fibers to bind the particles to the fibers. The particles have functional sites for forming a hydrogen bond or a coordinate covalent bond. The fibers have hydrogen bonding functional sites. The binder comprises binder molecules, the binder molecules having at least one functional group that is capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group that is capable of forming a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers may be adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder in turn may be adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.Type: GrantFiled: March 4, 1998Date of Patent: May 21, 2002Assignee: Weyernaeuser CompanyInventors: Michael R. Hansen, Richard H. Young, Sr.
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Patent number: 6387501Abstract: A method for forming resin coated refractory aggregates and the resulting resin coated aggregates which can be used for forming refractory shapes such as furnace linings, bricks, etc. The process includes contacting a heated refractory material in particulate form with a resin or resin solution which is then shaped or projected or otherwise compacted, exhibiting high green strength when cold pressed. Substantially reduced organic emissions are the result.Type: GrantFiled: August 2, 1999Date of Patent: May 14, 2002Assignee: Borden Chemical, Inc.Inventors: Avis Lloyd McCrary, Jimmy Pingao Chen, Pitchaiya Chandramouli
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Patent number: 6387531Abstract: A collection of nanoscale particles are a composite of carbon and metal oxide or silicon oxide. The composite particles have an average diameter from about 5 nm to about 1000 nm, and can be produced by laser pyrolysis. The laser pyrolysis involves the formation of a molecular stream including a metal precursor, an infrared absorber, an oxidizing agent and a carbon precursor. The pyrolysis is driven by heat absorbed from a laser beam. Furthermore, nanoparticles including titanium oxide with a rutile crystal structure have been produced.Type: GrantFiled: July 27, 1998Date of Patent: May 14, 2002Assignee: NanoGram CorporationInventors: Xiangxin Bi, Sujeet Kumar, Nobuyuki Kambe
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Patent number: 6383619Abstract: Generally, the present invention relates to a display film and a method of making same, where the display uses electrically responsive, reflective particles disposed within a polymer matrix. The invention includes a method of making a display film having one or more monolayers of the reflective particles. The invention is also directed to a display having particles selected from a production distribution of particles.Type: GrantFiled: January 29, 1999Date of Patent: May 7, 2002Assignee: 3M Innovative Properties CompanyInventors: David A. Engler, Brit G. Billingsley, William D. Miller, Richard John Pokorny
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Patent number: 6383625Abstract: An antifouling infrared shielding film comprising a transparent substrate film having, on one face thereof, at least an infrared shielding layer which comprises a cured product of a coating layer comprising (A) an ionizing radiation curing resin, (B) an infrared absorbent and (C) an ionizing radiation curing silicone resin in an amount of 0.1 to 50 parts by weight per 100 parts by weight of the resin of the ionizing radiation curing resin of (A); and a process for producing an antifouling infrared shielding film comprising coating one face of a transparent substrate film with a coating agent comprising the component (A), the component (B) and the component (C) in an amount of 0.1 to 50 parts by weight per 100 parts by weight of the component (A) to form a coating layer and curing the formed coating layer by irradiation of an ionizing radiation.Type: GrantFiled: January 18, 2000Date of Patent: May 7, 2002Assignee: Lintec CorporationInventors: Satoru Shoshi, Yutaka Onozawa, Shunpei Watanabe
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Patent number: 6383628Abstract: There is disclosed an image heating device, provided with a movable member including an electroconductive layer and adapted to move with a recording member, a magnetizing coil for generating a magnetic flux, provided continuously over the entire width of the movable member in a direction perpendicular to the moving direction of the movable member, and a core member for guiding the magnetic flux. The magnetic flux generated by the magnetizing coil induces an eddy current in the movable member, thereby heating an image supported on the recording member by the heat generated in the movable member by the eddy current. At least a part of the magnetizing coil is provided along the movable member not along the core member.Type: GrantFiled: January 9, 1998Date of Patent: May 7, 2002Assignee: Canon Kabushiki KaishaInventors: Atsuyoshi Abe, Toru Saitou
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Patent number: 6376063Abstract: We make particulates, especially magnetic Fe—Co alloys having high magnetic permeability, of controlled dimensions, especially those having a narrow thickness size distribution centered around a median or target thickness in the range of about 0.1-1.0 &mgr;m, using electrodeposition typically on a smooth (polished) titanium cathode. Our preferred continuous process uses a rotating drum cathode inside a fixed anode to grow flakes and to produce them automatically by inherent instability in the deposited film. The drum preferably rotates about a substantially vertical axis. The particulates shed (slough off) into the electrolyte (because of mismatch between the cathode surface and the plated metal or alloy at the molecular level) where they are separated in a magnetic separator or other suitable device. If the flakes are soft iron or iron-cobalt alloys, the drum generally is titanium or titanium alloy.Type: GrantFiled: June 14, 1999Date of Patent: April 23, 2002Assignee: The Boeing CompanyInventors: Glen L. Rasmussen, Micheal E. Dickson, Robert J. Miller, Mary J. Nelson, Jonathan C. Hughes, Diane C. Rawlings