| Patent Number |
Title Of Patent |
Date Issued |
| 7452599 |
Fine silica particles having specific fractal structure parameter |
November 18, 2008 |
| This invention provides flame-generated fine silica particles having an average particle size of 0.05 to 1 .mu.m, wherein a fractal structure parameter .alpha..sub.1 at length scales ranging from 50 nm to 150 nm and a fractal structure parameter .alpha..sub.2 at length scales ranging fro |
| 7442734 |
Coating composition and optical article |
October 28, 2008 |
| There is provided a coating composition which can be applied to a substrate such as a plastic lens so as to form a photochromic coating layer having good photochromic properties and excellent adhesion to the substrate on the surface of the substrate.This composition comprises, for ex |
| 7441893 |
Layered product and method of producing the same |
October 28, 2008 |
| A layered product comprising an optical substrate having, on at least one surface thereof, a photochromic surface layer constituted by a resin in which a photochromic compound is dispersed, and an ultraviolet ray-absorbing film of a thickness of 0.1 to 100 .mu.m formed on the photoch |
| 7404878 |
Gas diffusion electrode assembly, bonding method for gas diffusion electrodes, and electrolyzer |
July 29, 2008 |
| In a gas diffusion electrode assembly, and in an electrolyzer using the same, a bonding piece having on at least one surface a perfluorosulfonic acid layer, a perfluorosulfonyl fluoride layer or an alkyl ester of perfluorocarboxylic acid layer is positioned at its perfluoro compound |
| 7365106 |
Cationically curable composition for dental use |
April 29, 2008 |
| A cationically curable composition for dental use containing a cationic polymerization initiator (I) and cationically polymerizable monomers (II), the cationically polymerizable monomers (II) containing an oxetane compound and an epoxy compound or an alkenyl ether compound at a ratio of |
| 7338555 |
Highly crystalline aluminum nitride multi-layered substrate and production process thereof |
March 4, 2008 |
| A highly crystalline aluminum nitride multi-layered substrate comprising a single-crystal .alpha.-alumina substrate, an aluminum oxynitride layer and a highly crystalline aluminum nitride film as the outermost layer which are formed in the mentioned order, wherein the aluminum oxynitride |
| 7319080 |
Aluminum nitride sintered compact |
January 15, 2008 |
| An aluminum nitride sintered body comprising crystal grains of an average grain size (D.sub.50) of 0.1 to 2.5 .mu.m, and having a pore area ratio of not larger than 1.times.10.sup.-7, a pore density of not larger than 0.05 pores/mm.sup.2 of pores having diameters of not smaller than 1 |
| 7312357 |
Process for producing aliphatic dicarboxylic acid compound |
December 25, 2007 |
| The present invention discloses a process for producing an aliphatic dicarboxylic acid compound, which comprises oxidizing, with a nitrite or a nitrate in the presence of trifluoroacetic acid, an alicyclic secondary alcohol compound or an alicyclic ketone compound, in each of which at |
| 7272439 |
Working electrode assembly for iontophoresis and iontophoresis device |
September 18, 2007 |
| A working electrode assembly for iontophoresis having a working electrode, a medicine-containing portion containing an ionic medicine, and an ion-exchange membrane arranged between the working electrode and the medicine-containing portion, wherein said ion-exchange membrane has both |
| 7220881 |
Process for production of acid anhydride |
May 22, 2007 |
| According to the present invention there is provided a process for producing an acid anhydride by reacting a carboxylic acid, preferably a carboxylic acid having a polymerizable group, with a sulfonyl halide compound in the presence of a tertiary amine or in the presence of a tertiar |
| 7199264 |
Method of resolving optical isomers of amino acid derivative |
April 3, 2007 |
| Provided is a separating method for an optical isomer mixture comprising the steps of mixing an amino acid derivative such as N-(tert-butoxycarbonyl)-DL-alanine in which optical isomers of a D type and an L type are present in a mixture with a hydrophilic compound such as .beta.-cycl |
| 7169941 |
Photochromic composition |
January 30, 2007 |
| A photochromic composition and a coating composition comprising a molecular compound of a chromene compound and an aromatic compound. The photochromic composition provides a photochromic optical material as a cured product and the coating composition is applied to a lens substrate an |
| 7157609 |
Process for producing propylene chlorohydrin |
January 2, 2007 |
| A process of producing propylene chlorohydrin using a reactor having a one-way flow reaction area and a circulating flow reaction area which are connected in series. In this process, a propylene-containing gas is supplied to an aqueous solution of chlorine in the one-way flow reaction |
| 7157147 |
Gas-barrier film and gas-barrier coating agent, and method for production thereof |
January 2, 2007 |
| Provided are a gas-barrier film which is a laminate comprising a substrate layer comprising a thermoplastic resin film and a gas-barrier layer comprising a hydrolysate of a silicon alkoxide, a stratified silicate and a polyvinyl alcohol base resin, wherein a radius (Rg) of gyration of a |
| 7087798 |
Process for preparation of spirofluorenols |
August 8, 2006 |
| A spirofluorenol such as 3',9'-dimethoxy-5'-hydroxyspiro[(1H-cyclopent[d,e,f]phenanthrene)-1,7'-be- nzo[c]fluorene] is produced by protecting a hydroxyl group bonded to a particular fluorenone compound such as 3,9-dimethoxy-5-hydroxybenzo[c]fluorene-7-one with "a substituted silyl |
| 7087195 |
Photochromic curable composition and cured articles thereof |
August 8, 2006 |
| There is provided a method of preventing decreases in the developed color density and color fading speed of an organic photochromic compound without lowering the mechanical and optical physical properties such as hardness of a cured product when the cured product which has the organic |
| 7084182 |
Photopolymerization initiator |
August 1, 2006 |
| A photopolymerization initiator comprising (A) an .alpha.-diketone compound such as camphorquinone, (B1) an aliphatic amine compound such as triethanolamine or N-methyldiethanolamine, (B2) an aromatic amine compound such as ethyl p-dimethylaminobenzoate or N,N-dimethyl p-toluidine, a |
| 7081425 |
Aluminum nitride sintered body |
July 25, 2006 |
| An aluminum nitride sintered body having an oxygen concentration of not larger than 400 ppm, a metal impurity concentration of not larger than 150 ppm, and a carbon concentration of not larger than 200 ppm, and having an average crystal grain size of 2 .mu.m to 20 .mu.m. The sintered |
| 7071352 |
Processes for preparation of 2-alkyl-2-adamantyl esters |
July 4, 2006 |
| A magnesium halide salt of a 2-alkyl-2-adamantanol is reacted with a carboxylic acid halide such as acrylic chloride or the like in the presence of a tertiary amine to produce a 2-alkyl-2-adamantyl ester (the first invention).A 2-alkyl-2-adamantanol is reacted with a carboxylic acid |
| 7056961 |
Adhesive composition for denture base relining material and dental curable composition |
June 6, 2006 |
| An adhesive composition for a denture base relining material which comprises an organic solvent containing no halogen atoms such as ethyl acetate, ethyl formate or acetone, a polymer such as a copolymer of methyl methacrylate and ethyl methacrylate, and a radical polymerizable monome |
| 7048876 |
Chromene compound |
May 23, 2006 |
| A chromene compound typically represented by the following formula, ##STR00001## When placed in a state of developing color, the chromene compound exhibits absorption bands in two wavelength regions of 440 to 500 nm and 570 to 630 nm. A difference in the absorption intensity between |
| 7045106 |
Method for producing inorganic porous material |
May 16, 2006 |
| A process for producing an inorganic porous material, comprising the steps of preparing an aqueous medium solution containing water-glass as a silica source, a water-soluble polymer and an acid, causing phase separation and gelation in the solution at the same time to form a wet gel, |
| 7041714 |
Dental adhesive |
May 9, 2006 |
| A dental adhesive containing an acidic group-containing radically polymerizable monomer, a non-acidic radically polymerizable monomer, a chemical polymerization initiator and a filler, as well as a 2,4-diphenyl-4-methyl-1-pentene. When the dental adhesive is used for adhering a crown |
| 7026504 |
Process for preparing alkyladamantyl esters and compositions |
April 11, 2006 |
| There is provided a method for obtaining a high-purity alkyladamantyl ester from an alkyladamantyl ester composition containing a large quantity of alkyladamantyl halide obtained by, for example, alkylating raw material 2-adamantanone obtained through oxidation of adamantane by use o |
| 6949495 |
Cleaning solution for removing residue |
September 27, 2005 |
| A solution for washing away residue, comprising an aqueous solution of a water-soluble high molecular compound in which is dissolved at least one kind of dissolving agent selected from an amine and a fluoride. The washing solution is capable of effectively washing away the residue formed |
| 6933327 |
Dental curable composition |
August 23, 2005 |
| A dental polymerizable and curable composition that can be used as a dental composite restorative featuring excellent handling property at the time of filling, a small contraction upon polymerization, a high bending strength, excellent surface smoothness and wear resistance, and a very g |
| 6932954 |
Method for producing silicon |
August 23, 2005 |
| A silicon production process which improves the production efficiency of trichlorosilane while an industrially advantageous output is ensured and the amount of the by-produced tetrachlorosilane is suppressed. This process does not require a bulky reduction apparatus for the by-produced |
| 6930134 |
Photocationic polymerization initiator and photocationically polymerizable composition |
August 16, 2005 |
| A photocationic polymerization initiator comprising (A) a photo acid-generating compound and (B) a fused polycyclic aromatic compound, wherein said fused polycyclic aromatic compound has a molecular structure in which a fused aromatic ring is further condensed with a non-aromatic rin |
| 6923420 |
Method of preparing a ceramic artificial crown and a preparation kit used therefor |
August 2, 2005 |
| A method of preparing a ceramic artificial crown by applying at least one kind of dental porcelain onto the surface of a ceramic core molded by heating and softening a ceramic material and putting it into a mold with the application of pressure followed by firing wherein said mold is the |
| 6894125 |
Scale deposit inhibitor, process for its production, polymerizer whose inside wall is covered wi |
May 17, 2005 |
| A scale adhesion preventing agent for use in a polymerization reactor, consisting essentially of a condensate of a phenol represented by the following formula (1), a 1-naphthol and an aldehyde, which is soluble in an alkaline aqueous solution: ##STR1##wherein R.sup.1 and R.sup.2 are |
| 6878853 |
Process for preparing dihalogenated adamantanes |
April 12, 2005 |
| This invention discloses a process for preparing a dihalogenated adamantane by reacting an adamantane optionally substituted with alkyl at 1-position with a halosulfonic acid, comprising the first stage of monohalogenation conducted at -5 to 15.degree. C. and then the second stage of |
| 6878672 |
Herbicidal emulsion compositions |
April 12, 2005 |
| A herbicidal emulsion composition comprising an ethenylamide compound as a herbicidally active component and a dichloroacetamide compound as a phytotoxicity reducing agent. This composition has excellent keeping stability because the phytotoxicity reducing agent of the composition does |
| 6875878 |
Chromene compound |
April 5, 2005 |
| A chromene compound represented by the general formula (1), ##STR1## wherein R.sup.1 to R.sup.4 are hydrogen atoms, hydroxyl groups, alkyl groups, alkoxy groups, substituted amino groups or halogen atoms, R.sup.1 to R.sup.4 may be bonded together to form a ring, R.sup.5 and R.sup.6 ar |
| 6866742 |
Adhesive for silicone rubber lining materials |
March 15, 2005 |
| An adhesive for silicone rubber lining materials, for adhering a silicone rubber lining material and a (meth)acrylic resin denture base together, comprising (a) 100 parts by weight of an organic solvent, (b) 0.1 to 20 parts by weight of a (meth)acrylic polymer modified with a siloxane ha |
| 6864299 |
Process for producing cured photochromic |
March 8, 2005 |
| The present invention is aimed to produce a cured product having excellent photochromism which can be easily polymerized in a short period of time. The cured product is obtained by photopolymerizing a polymerizable composition comprising (A) a radical polymerizable monomer, (B) an ul |
| 6861552 |
Adamantyl ester monomer composition |
March 1, 2005 |
| The present invention discloses an adamantyl ester monomer composition characterized by containing at least an adamantyl ester monomer having at least one polymerizable unsaturated bond in the molecule, and a compound represented by the following general formula (1): ##STR1##(in the |
| 6861144 |
Polycrystalline silicon and process and apparatus for producing the same |
March 1, 2005 |
| Foamed polycrystalline silicon having bubbles therein and an apparent density of 2.20 g/cm.sup.3 or less. This silicon generates an extremely small amount of fine grains by crushing and can be easily crushed. There is also provided a method of producing foamed polycrystalline silicon. |
| 6852885 |
Production method of high purity organic compound |
February 8, 2005 |
| There is provided a method for obtaining a target organic compound such as an alkyladamantyl ester efficiently by purifying a crude organic compound which contains, as impurities, sublimable materials which start to sublime at temperatures lower than a boiling point of the target organic |
| 6852856 |
Method for preserving quaternary ammonium salt |
February 8, 2005 |
| A method of improving the stability of a quaternary ammonium salt and a method of efficiently preparing the quaternary ammonium salt having improved stability. |
| 6849670 |
Photo-curable reparative material for dental use |
February 1, 2005 |
| A photocurable dental restorative comprising (i) 100 parts by weight of a polymerizable monomer, (ii) 0.01 to 5 parts by weight of a photopolymerization initiator of acylphosphine oxide, and (iii) 200 to 1900 parts by weight of an inorganic filler, wherein the inorganic filler (iii) |
| 6830671 |
Ion-exchange membrane |
December 14, 2004 |
| An ion-exchange membrane having excellent resistance against organic fouling by high molecular weight organic ions etc. and showing low electric resistance is provided. Said ion-exchange membrane is characterized by that a polyether compound containing polyalkylene glycol chain, such |
| 6818574 |
Jointed body of glass-ceramic and aluminum nitride sintered compact and method for producing the |
November 16, 2004 |
| A compact, low electric resistance and high heat-spreading electric circuit substrate, which is suitable for an electric circuit used at microwave of 1 GHz or more as used in the field of wireless communication such as portable telephones or optical communication, is provided. Also provi |
| 6815470 |
Dental catalyst for chemical polymerization and use thereof |
November 9, 2004 |
| A dental catalyst for chemical polymerization comprising an acidic compound, an organic peroxide such as cumene hydroperoxide, and aryl borate compound such as sodium tetraphenylborate, but without substantially containing amine compound. This catalyst is chemically highly stable, is |
| 6802993 |
Curable composition comprising a photochromic compound |
October 12, 2004 |
| A photochromic cured product which has excellent photochromism such as high color density and high fading speed, excellent adhesion to a hard coat and high striping work efficiency. This cured product is obtained by polymerizing and curing a curable composition which comprises (A) a |
| 6784079 |
Method of manufacturing silicon |
August 31, 2004 |
| A production method of silicon which comprises the steps of bringing a silane into contact with a surface of a substrate so as to cause silicon to be deposited while the surface of the substrate is heated to and kept at a temperature lower than the melting point of the silicon, and raisi |
| 6781016 |
Process for the preparation of alicyclic ketones and an alkyl-substituted alicyclic esters |
August 24, 2004 |
| A high-purity alicyclic ketone which is a raw material for an alkyl-substituted alicyclic ester such as an alkyl adamantyl ester compound which is useful as a resist raw material can be obtained by a simple operation such as extraction without a special purification step such as dist |
| 6770777 |
Process for producing 2-alkyl-2-adamantyl ester |
August 3, 2004 |
| This invention discloses a process for preparing an 2-alkyl-2-adamantyl ester comprising the steps of combining a solution or suspension of 2-adamantanone and an alkyl halide with lithium metal for reacting them to generate an lithium 2-alkyl-2-adamantyl alcoholate, and then reacting the |
| 6770130 |
Silica composite oxide particles and method of producing the same |
August 3, 2004 |
| Silica composite oxide particles comprising silica and a metal oxide other than silica, the content of the metal oxide other than silica being from 30 to 50 mol %, and a coefficient of variation in the particle diameter being not larger than 30%. The silica composite oxide particles cont |
| 6767622 |
Porous polyolefin film, process for producing same, and use thereof |
July 27, 2004 |
| The present invention provides a porous polyolefin film abounding in air permeability and moisture permeability and having extremely high degree of light transmission and tear strength, a process for producing same and intended use thereof. This porous polyolefin film is produced, for |
| 6762496 |
Substrate and production method therefor |
July 13, 2004 |
| A sintered aluminum nitride substrate which has a via hole and an internal electrically conductive layer, having high thermal conductivity and high adhesion strength between the sintered aluminum nitride substrate and the internal electrically conductive layer or the via hole and having |
