FUJI CHEMICAL CO. LTD Patent applications |
Patent application number | Title | Published |
20140292160 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, MULTILAYERED PIEZOELECTRIC ELEMENT, LIQUID EJECTION HEAD, LIQUID EJECTION APPARATUS, ULTRASONIC MOTOR, OPTICAL EQUIPMENT, VIBRATION APPARATUS, DUST REMOVING APPARATUS, IMAGING APPARATUS, AND ELECTRONIC EQUIPMENT - Provided is a lead-free piezoelectric material having a satisfactory and stable piezoelectric constant and electric insulation property in a wide practical temperature range. Provided is a piezoelectric material, including a perovskite-type metal oxide represented by the following general formula (1) as a main component, the piezoelectric material containing Mn in a content of 0.01 part by weight or more and 0.80 part by weight or less with respect to 100 parts by weight of the perovskite-type metal oxide: (Li | 10-02-2014 |
20140178290 | BISMUTH IRON OXIDE POWDER, MANUFACTURING METHOD FOR THE BISMUTH IRON OXIDE POWDER, DIELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, AND ULTRASONIC MOTOR - Provided is a lead-free dielectric ceramics having a low leakage current value, and a bismuth iron oxide powder as a raw material thereof. The bismuth iron oxide powder includes at least: (A) grains including a bismuth iron oxide having a perovskite-type crystal structure; (B) grains including a bismuth iron oxide having a crystal structure classified to a space group Pbam; and (C) grains including a bismuth iron oxide or a bismuth oxide having a crystal structure that is classified to a space group I23. The dielectric ceramics are made of bismuth iron oxide in which the bismuth iron oxide crystals having the crystal structure classified to the space group Pbam are distributed at a grain boundary of crystal grains of the bismuth iron oxide crystals having the perovskite-type crystal structure. | 06-26-2014 |
20140069326 | METHOD FOR PRODUCING COLLOIDAL CRYSTAL AND COLLOIDAL CRYSTAL - [Problem] To provide a method for producing a colloidal crystal, wherein the method is easily controlled and is capable of dealing with a wide range of types of colloidal particle. | 03-13-2014 |
20120251820 | PIEZOELECTRIC THIN FILM, METHOD OF MANUFACTURING PIEZOELECTRIC THIN FILM, PIEZOELECTRIC ELEMENT, AND INK JET RECORDING HEAD - There is are disclosed a piezoelectric thin film having less non-uniform portions and holding satisfactory piezoelectric characteristics, a method of manufacturing the film, a piezoelectric element using the piezoelectric thin film, and an ink jet system recording head using the piezoelectric element. In the piezoelectric thin film of perovskite crystals formed on a substrate by a sol-gel process and represented by a general formula Pb | 10-04-2012 |
20120142860 | Acrylic Resin Composition, Method of Manufacturing the Same, and Architectural Material, Fashion Accessory, and Optical Material Formed Using the Same - The present invention provides an acrylic resin composition containing a polycrystal of colloidal particles of silicon oxide in an acrylic resin that is formed by curing an acrylic monomer liquid at room temperature and/or an acrylic oligomer liquid at room temperature, wherein a mean distance between the colloidal particles in the polycrystal is 140 to 330 nm. The size of the single crystal that constitutes the polycrystal can be controlled by adjusting the content of silicon oxide and/or the additive amount of impurities. An architectural material, a fashion accessory, and an optical material are provided that are formed by using the acrylic resin composition. | 06-07-2012 |
20110221302 | BISMUTH IRON OXIDE POWDER, MANUFACTURING METHOD FOR THE BISMUTH IRON OXIDE POWDER, DIELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, AND ULTRASONIC MOTOR - Provided is a lead-free dielectric ceramics having a low leakage current value, and a bismuth iron oxide powder as a raw material thereof. The bismuth iron oxide powder includes at least: (A) grains including a bismuth iron oxide having a perovskite-type crystal structure; (B) grains including a bismuth iron oxide having a crystal structure classified to a space group Pbam; and (C) grains including a bismuth iron oxide or a bismuth oxide having a crystal structure that is classified to a space group I23. The dielectric ceramics are made of bismuth iron oxide in which the bismuth iron oxide crystals having the crystal structure classified to the space group Pbam are distributed at a grain boundary of crystal grains of the bismuth iron oxide crystals having the perovskite-type crystal structure. | 09-15-2011 |
20110123803 | PROCESS FOR PRODUCING COLLOIDAL CRYSTAL AND COLLOIDAL CRYSTAL - Provided is a process for producing colloidal crystals from which a large single crystal reduced in lattice defects and unevenness can be easily produced at low cost without fail. The process for colloidal crystal production comprises: preparing a colloidal polycrystal dispersion in which colloidal crystals precipitate at a given temperature (preparation step); introducing into a vessel The colloidal polycrystal dispersion in the state of containing fine colloidal polycrystals precipitated (introduction step); and melting the colloidal polycrystals and then recrystallizing the molten polycrystals (recrystallization step). The crystals thus obtained have fewer lattice defects and less unevenness than the original polycrystals. | 05-26-2011 |
20080233277 | PIEZOELECTRIC THIN FILM, METHOD OF MANUFACTURING PIEZOELECTRIC THIN FILM, PIEZOELECTRIC ELEMENT, AND INK JET RECORDING HEAD - There is disclosed a piezoelectric thin film having less non-uniform portion and holding satisfactory piezoelectric characteristics, a method of manufacturing the film, a piezoelectric element using the piezoelectric thin film, and an ink jet system recording head using the piezoelectric element. In the piezoelectric thin film of perovskite crystals formed on a substrate by a sol-gel process and represented by a general formula Pb | 09-25-2008 |