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    • 5. 发明申请
    • Power Converter
    • US20120320645A1
    • 2012-12-20
    • US13580272
    • 2010-08-19
    • Shinichi FujinoYusuke TakagiTakuma Hakuto
    • Shinichi FujinoYusuke TakagiTakuma Hakuto
    • H02M7/00
    • H02M7/003H01L2224/0603H01L2224/4903H01L2224/49111H01L2924/1305H01L2924/13055H01L2924/19107H02M3/00H03K17/691H01L2924/00
    • A power converter which has a power module allowing supply and cutoff of main current, and a driver module controlling supply and cutoff of the main current allowed by the power module includes: a high potential side semiconductor device which allows supply and cutoff of the main current on the high potential side of the power module; a low potential side semiconductor device which allows supply and cutoff of the main current on the low potential side of the power module, and is connected with the high potential side semiconductor device in series; plural power module side wirings connected with respective electrodes contained in the high potential side semiconductor device and the low potential side semiconductor device, and disposed adjacent to each other substantially on the same plane as the power module in the order of applied potentials with a connection end between the plural power module side wirings and the driver module located along the end of the power module; plural driver module side wirings provided on the driver module as wirings connected with the plural corresponding power module side wirings, and disposed adjacent to each other substantially on the same plane as the driver module in the order corresponding to the positions of the plural power module side wirings in positions along the end of the driver module; a power source transformer as a circuit which converts a signal voltage for controlling the supply and cutoff of the main current by the driver module into voltage applied to a control electrode of the high potential side semiconductor device and a control electrode of the low potential side semiconductor device, plural terminals of the power source transformer in correspondence with the plural driver module side wirings being provided in the order of the positions of the plural corresponding driver module side wirings; and conductors disposed in the vicinity of the plane on which the plural power module side wirings are provided and in the vicinity of the plane on which the plural driver module side wirings are provided, and electrically connected in such positions as to surround magnetic flux generated by current looping at least through the power source transformer, the driver module side wirings, and the power module side wirings.
    • 8. 发明授权
    • Polyacrylic acid-type water absorbent resin and method for producing same
    • 聚丙烯酸型吸水性树脂及其制造方法
    • US09074030B2
    • 2015-07-07
    • US13807530
    • 2011-06-29
    • Toshihiro TakaaiHidenori WadaShinichi Fujino
    • Toshihiro TakaaiHidenori WadaShinichi Fujino
    • C08F20/00C08J9/20A61L15/24A61L15/60C08F220/06C08J3/24C08J9/36C08F2/01
    • C08J9/122A61L15/24A61L15/60C08F2/01C08F20/00C08F220/06C08J3/245C08J9/20C08J9/36C08J2203/06C08J2205/05C08J2333/02C08J2335/02Y10T428/2982C08L33/02C08F2222/1013
    • Provided is a method for producing a water absorbent resin, which promotes the formation of interconnected voids (continuous gas bubbles) in a foamed polymer (foam-like water absorbent resin) by a more convenient method, and produces with high efficiency a water absorbent resin which exhibits a high water absorption rate even when stepped into a sheet form or a powder form in hygiene articles and the like. Disclosed is a a method for producing a polyacrylic acid-type water absorbent resin, comprising (A) a step of obtaining an aqueous solution of acrylic acid-type monomers containing gas bubbles dispersed therein; (B) a step of polymerizing the aqueous monomer solution and thereby obtaining a foamed polymer; and (C) a step of heating and drying the foamed polymer, wherein gas bubbles are incorporated such that the volumetric expansion factor defined by the following formula (1); [Formula 1] Volumetric expansion factor=(Volume of aqueous monomer solution after gas bubble dispersion)/(volume of aqueous mononer solution before gas bubble dispersion)  Formula (1); exceeds 1.1 times, and the aqueous monomer solution having a monomer concentration defined by the following formula (2); [Formula 2] Monomer concentration [wt %]=(Weight of a monomer)/{(weight of a monomer)+(weight of solvent)}×100   Formula (2); of 40% by weight or greater is boiling polymerized at a temperature of 100° C. or higher.
    • 提供一种通过更方便的方法促进发泡聚合物(泡沫状吸水性树脂)中形成互连空隙(连续气泡)的吸水性树脂的制造方法,高效率地制造吸水性树脂 即使在卫生用品等中成为片状或粉末状时,也显示出高的吸水率。 本发明提供一种聚丙烯酸型吸水性树脂的制造方法,其特征在于,包括:(A)获得含有分散在其中的气泡的丙烯酸型单体的水溶液的工序; (B)使单体水溶液聚合,得到发泡聚合物的工序; 和(C)加热和干燥发泡聚合物的步骤,其中加入气泡,使得由下式(1)定义的体积膨胀系数; [式1]体积膨胀系数=(气泡分散后的单体水溶液的体积)/(气泡分散前的单体溶液的体积)式(1) 超过1.1倍,单体浓度由下式(2)定义的单体水溶液; [式2]单体浓度[wt%] =(单体重量)/ {(单体重量)+(溶剂重量)}×100式(2) 为40重量%以上时,在100℃以上的温度下进行沸腾聚合。