Patents Represented by Attorney, Agent or Law Firm Jules E. Goldberg
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Patent number: 4853439Abstract: A novel, highly water soluble complex of a substantially insoluble organic compound and a solid homopolymer or copolymer of N-vinyl-2-pyrrolidone. The complex exhibits water solubilities in excess of about 25-fold that of the insoluble organic compound. A method for producing the complex is disclosed wherein the polymer and insoluble compound are dissolved in a mutual solvent, allowed to react for a period of time sufficient to form the complex, and then the solvent is removed to produce the dried highly water-soluble complex.Type: GrantFiled: October 9, 1987Date of Patent: August 1, 1989Assignee: GAF CorporationInventor: Eugene S. Barabas
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Patent number: 4849196Abstract: The present invention provides a process for producing silicon carbide whiskers by reacting a starting mixture comprising starting silicon source material mainly composed of silicon and oxygen and carbonaceous material at a high temperature, wherein one or more of Fe, Co and Ni ingredients are contained in the starting mixture such that the total amount of the Fe, Co, Ni ingredients is from 25 to 2000 ppm based on the silicon ingredient in the starting silicon source material. Silicon carbide whiskers at high purity can be produced at high yield with less content of powdery silicon carbide.Type: GrantFiled: December 23, 1987Date of Patent: July 18, 1989Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Motoyuki Yamada, Akira Hayashida, Kazutoshi Numanami, Takahiro Iizuka
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Patent number: 4846927Abstract: The invention provides a method of high productivity for the preparation of a substantially dislocation-free single crystal of a compound semiconductor such as gallium arsenide by the liquid-encapsulated Czochralski method. The improvement provided by the invention comprises admixing the melt in the crucible with an additive having an equilibrium segregation coefficient K.sub.O smaller than 1.0, which is indium in the preparation of gallium arsenide single crystals, in a concentration of at least 1.0.times.10.sup.21 atoms/cm.sup.3 of the melt and rotating the crucible at an unusually high velocity of at least 40 rpm.Type: GrantFiled: April 29, 1987Date of Patent: July 11, 1989Assignee: Shin-Etsu Handotai Co., Ltd.Inventor: Toru Takahashi
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Patent number: 4847345Abstract: A process for manufacturing an organic silazane polymer which comprises reacting an organic silicon compound of the following formula (I): ##STR1## in which R represents hydrogen, chlorine, bromine, methyl radical, ethyl radical, phenyl radical or vinyl radical, R.sub.1 represents hydrogen or methyl radical and X represents chlorine or bromine, or a mixture of organic silicon compounds of the formula (I) above and an organic silicon compound of the following formula (II): ##STR2## in which R.sub.2 and R.sub.3 represent hydrogen, chlorine, bromine, methyl radical, ethyl radical, phenyl radical or vinyl radical and X represents chlorine or bromine with a disilazane of the following formula (III): ##STR3## in which R.sub.4, R.sub.5, R.sub.6 represents hydrogen, methyl radical, ethyl radical, phenyl radical or vinyl radical in an anhydrous state at a temperature of from 25.degree. to 350.degree. C. while distilling off by-produced organic ingredients out of the system to obtain an organic silazane polymer.Type: GrantFiled: February 23, 1988Date of Patent: July 11, 1989Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Minoru Takamizawa, Yoshihumi Takeda, Akira Hayashida, Tsutomu Takeno
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Patent number: 4844787Abstract: A packaging bag for a sheet for electrophoresis comprising a polyethylene resin layer containing more than 50 wt. % of polyethylene resin having a density of 0.935 to 0.970 g/cm.sup.3 and a melt index of 0.1 to 1.5 g/10 minutes, the thickness of said polyethylene resin layer is 70 to 200 .mu.m, and haze of said bag is 15 to 95%.This packaging bag is excellent is moistureproofness capable of preserving the sheets for electrophoresis without deterioration of quality, and the sheets for electrophoresis can be inspected from the outside. This packaging bag has not the problem as the packaging material for the sheet for electrophoresis such as curling, insertion nor blocking, and it is inexpensive.Type: GrantFiled: September 24, 1987Date of Patent: July 4, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Mutsuo Akao, Takeshi Kato
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Patent number: 4844786Abstract: A means for electrophoresis suitably employable for analysis of biopolymers such as proteins, as well as for determination of base sequence of DNA, RNA, their fragments, and their derivatives is disclosed. The means comprises a membrane of an aqueous polyacrylamide gel for electrophoresis which is sandwiched between a plane support and a plane covering sheet. The membrane has a thickness gradient in its electrophoresis direction.Type: GrantFiled: February 25, 1988Date of Patent: July 4, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Mitsuru Sugihara, Masashi Ogawa
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Patent number: 4842712Abstract: In a device for measuring ion activity in a liquid sample such as a body fluid comprising at least one pair of ion-selective electrodes selectively responsive to a specific ion, a porous liquid distributing member for feeding a liquid sample to one electrode of the pair of electrodes, a porous liquid distributing member for feeding a reference liquid to another electrode of the pair of electrodes and a porous bridge for electrically connecting both liquids to each other, the improvement wherein the liquid distributing members are made of a nonwoven fabric composed of cellulosic long fibers.Type: GrantFiled: February 2, 1987Date of Patent: June 27, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Osamu Seshimoto, Masaaki Terashima, Yoshio Saito
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Patent number: 4838946Abstract: When a liquid chlorosilane compound inadvertently runs out of a container, the liquid must be disposed by absorbing using an absorbent since chlorosilane compounds are generally very dangerous and toxic. Instead of dry sand conventionally used as an absorbent in such a purpose, the invention purposes that a very efficient effect of absorption can be obtained by using a silica-, silica/alumina-based porous ceramic material or a mixture of them as an absorbent without gas evolution in the liquid and with little temperature increase of the liquid when the absorbent material has a specified content of silica or silica/alumina and a pore diameter distribution.Type: GrantFiled: May 25, 1988Date of Patent: June 13, 1989Assignee: Shin-Etsu Handotai Co., Ltd.Inventors: Hisayoshi Yamaguchi, Tamotsu Yanagisawa, Minoru Kobayashi
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Patent number: 4839278Abstract: An integral multilayer analytical element for the measurement of alkaline phosphatase activity, which comprises a porous spreading layer containing a self-developable substrate in response to contact with alkaline phosphatase, a buffer layer containing a diffusion-resistant base and a support in a laminated form.Type: GrantFiled: May 22, 1986Date of Patent: June 13, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Kaoru Terashima, Takushi Miyazako, Harumi Katsuyama
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Patent number: 4834854Abstract: A method of making an electrophoresis medium having a predetermined gradient in concentrations of an acrylamide compound and a cross-linking agent comprises the steps of mixing two kinds of aqueous solutions containing the acrylamide compound and the cross-linking agent in different concentrations such that a mixing ratio of the aqueous solutions to each other is changed gradually, thereby to form a predetermined gradual change (gradient) in concentrations of the acrylamide compound and the cross-linking agent in the mixture, and carrying out cross-linking polymerization of the mixture in the presence of a polymerization initiator. Viscosity values of the two kinds of the aqueous solutions containing the acrylamide compound and the cross-linking agent in different concentrations prior to the mixing are adjusted to be substantially equal to each other.Type: GrantFiled: August 19, 1988Date of Patent: May 30, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Mitsuru Sugihara, Mineo Suyefuji
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Patent number: 4832488Abstract: A method for correction of calibration curve in a dry analytical process for quantitative analysis of analyte in a liquid sample such as blood is disclosed. In the method, a calibration curve which has been previously determined for analysis of the analyte using a standard dry analytical element is corrected for application to a dry analytical element having deviated from the standard dry analytical element in its sensitivity to the analyte due to unintentional denaturation, variation, etc., utilizing an optical density determined on the above deviated dry analytical element which has not received spotting of a liquid sample containing the analyte.Type: GrantFiled: September 1, 1987Date of Patent: May 23, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Kikuo Hirai, Fuminori Arai, Yuzo Iwata
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Patent number: 4830762Abstract: The invention provides a rapid and reliable method for extinguishment of fire on a chlorosilane compound such as trichlorosilane which is hardly extinguishable once set on fire by any conventional fire-extinguishing methods. The inventive method comprises sprinkling an inert siliceous powder composed of porous particles of specified silica or silica-alumina content having a specified particle diameter, pore diameter and porosity over the surface of the burning chlorosilane compound. The efficiency of fire-extinguishment can further be enhanced when sprinkling of the porous siliceous powder is followed by spraying of water or a highly halogenated hydrocarbon compound, e.g., monobromo monochloromethane and carbon tetrachloride, over the siliceous powder.Type: GrantFiled: September 2, 1987Date of Patent: May 16, 1989Assignee: Shin-Etsu Handotai Co., Ltd.Inventors: Hisayoshi Yamaguchi, Tamotsu Yanagisawa, Masao Yabuzuka, Takashi Tanaka, Masakatu Shimizu
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Patent number: 4826761Abstract: An integral multilayer analytical element for analysis of cholesterol which comprises a water-impermeable light-transmissive support, a hydrophilic layer and a spreading layer superposed in this order, and contains cholesterol esterase, cholesterol oxidase, peroxidase and a coloring reagent composition, which is characterized, in that the above coloring reagent composition is a combination of 4-aminoantipyrine or its derivative and 2-hydroxy-3,5-dichlorobenzene sulfonic acid, and in that pH of the layer where coloring reaction proceeds is kept in the range of 7.5 to 9.This analytical element is stable, and capable of preserving more than 8 months without fogging.Type: GrantFiled: July 8, 1986Date of Patent: May 2, 1989Assignee: Fuji Photo Film Co, Ltd.Inventors: Fuminori Arai, Takeshi Igarashi
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Patent number: 4824754Abstract: A toner particle for electrostatography or magnetography which has an inorganic material such as a specific metallic oxide, a carbonate or a silicate in or on its surface. This inorganic material is in the form of particles and has been treated with a titanate coupling agent on its surface.Type: GrantFiled: April 8, 1987Date of Patent: April 25, 1989Assignee: Fuji Photo Film Co., Ltd.Inventor: Takeshi Mikami
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Patent number: 4822445Abstract: An apparatus for processing a double face adhesive tape so as to attach at least one member thereto, comprising a roll of the double face adhesive tape having release papers attached to both faces, a drawing out means of the double face adhesive tape from said roll, a slitting means to slit at least the vicinity of one side edge of the upper release paper or the lower release paper of the double face adhesive tape parallel to said side edge, a separating means to separate the slit release paper leaving at least one side portion of the slit release paper attached, and an attaching means to attach at least one member on the exposed face of the double face adhesive tape is disclosed. The drawing out means intermittently draws out the double face adhesive tape from the roll, and a punching means to punch the double face adhesive tape to form hole(s) is further incorporated.Type: GrantFiled: November 9, 1987Date of Patent: April 18, 1989Assignee: Fuji Photo Film Co., Ltd.Inventor: Akira Yamaguchi
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Patent number: 4822639Abstract: In coating a substrate such as a glass plate with a photo-sensitive coating solution by spin coating, the substrate is tilted so that the coating solution flows down the substrate to cover the entire surface of the latter, and then the substrate is held horizontal, and rotated so that a layer of coating solution uniform in thickness is formed on the substrate.Type: GrantFiled: August 21, 1987Date of Patent: April 18, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Itsuo Fujii, Toshikazu Sato, Kazuharu Kawashima
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Patent number: 4820398Abstract: An electrophoresis gel sheet is composed of electrically non-conductive organic polymer films, gel-casing spacers having predetermined thicknesses and disposed at both side edge portions between the two polymer films, and an electrophoresis medium of uniform thickness encapsulated between the two polymer films at the zone between the gel-casing spacers.Type: GrantFiled: May 14, 1987Date of Patent: April 11, 1989Assignee: Fuji Photo Film Co., Ltd.Inventor: Shoichi Yamamoto
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Patent number: 4816539Abstract: A vinyl chloride copolymer is produced by copolymerizing vinyl chloride monomer or a monomer mixture comoposed of vinyl chloride monomer and copolymerizable monomer, with one or more than one kind of cross-linking agent selected from polyhydric alcohol diglycidyl ether diacrylate and dimethacrylate. The vinyl chloride copolymer has good moldability and can be made into moldings having good matte finish surface and also good permanent compression set resistance, creep resistance, heat resistance, and electrical properties.Type: GrantFiled: December 16, 1987Date of Patent: March 28, 1989Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Junich Watanabe, Tohru Yokota
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Patent number: 4813482Abstract: A method for removing paraffin from a producing oil well comprising (a) contacting a mixture of a paraffin-dispersing effective amount of an alkyl or aralkyl polyoxyalkylene phosphate ester surfactant in the free acid form, or in the form of the alkali metal, amine, or ammonium salt, a mutual solvent and water, said mixture having a temperature of from about 30.degree. to 40.degree. F. higher than the melting point of the paraffin to be removed, with the interior of the oil well for a period of time sufficient to disperse paraffin within the well into the mixture; and (b)removing the mixture and the paraffin dispersed therein from the interior of the well.Type: GrantFiled: September 17, 1987Date of Patent: March 21, 1989Assignee: GAF CorporationInventor: William B. Walton
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Patent number: 4812255Abstract: Water soluble paint remover compositions for the removal of uncured paint are disclosed which avoid the use of toxic organic solvent, in particular, methylene chloride. The inventive compositions comprise an organic carboxylic acid, N-methyl-2-pyrrolidone, and an alkylene glycol ether. Methods for use of the compositions are also disclosed.Type: GrantFiled: March 4, 1987Date of Patent: March 14, 1989Assignee: GAF CorporationInventor: David W. Suwala