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    • 31. 发明授权
    • Process for producing pyromellitic acid
    • 制备均苯四酸的方法
    • US06888023B2
    • 2005-05-03
    • US10440255
    • 2003-05-19
    • Kazuo TanakaHiroshi OgawaIkutraro MarukiAtsushi Okoshi
    • Kazuo TanakaHiroshi OgawaIkutraro MarukiAtsushi Okoshi
    • C07C51/265C07C51/23
    • C07C51/265C07C63/313
    • A process for producing pyromellitic acid which comprises oxidizing 2,4,5-trimethylbenzaldehyde and/or its oxidized derivative in the presence of a catalyst containing iron, manganese and bromine, or additionally containing zirconium or cerium continuously or semi-continuously using aqueous acetic acid solvent and 0.05-2% by weight of bromide ion. The catalyst used in the present invention has high activity, and the catalyst solution has low corrosive because the reaction is performed at low bromide concentration by using a solvent of aqueous acetic acid. So pyromellitic acid is produced industrially advantageously in high yield continuously or semi-continuously which has been a major difficulty up to now.
    • 一种制备均苯四酸的方法,其包括在含铁,锰和溴的催化剂存在下氧化2,4,5-三甲基苯甲醛和/或其氧化的衍生物,或者使用乙酸水溶液连续或半连续地加入锆或铈 溶剂和0.05-2重量%的溴离子。 本发明中使用的催化剂具有高活性,催化剂溶液具有低腐蚀性,因为通过使用乙酸水溶液的低溴化物浓度进行反应。 所以均苯四酸在工业上有利地以高产率连续或半连续地产生,这在现在是一个主要的困难。
    • 33. 发明授权
    • Airbag and its wrapping method
    • 安全气囊及其包装方法
    • US06742806B2
    • 2004-06-01
    • US10014443
    • 2001-12-14
    • Hiroshi OgawaHiroshi YasudaShoji Okajima
    • Hiroshi OgawaHiroshi YasudaShoji Okajima
    • B60R2120
    • B60R21/213B60R21/201
    • An airbag comprises an airbag body, and a wrapping member made tearable for preventing the airbag body from returning to its unfolded state. The airbag body is folded and housed on the peripheral edge of an opening on the inner side of a car body, and is folded up into a rod shape so that it may be inflated when an inflating gas flows thereinto so as to cover the opening. The wrapping member is made flexible and long and is wrapped on the outer periphery of the folded airbag body substantially all along the length of the same, so that it may extend obliquely to the axial direction of the airbag body folded up into the rod-like shape. Moreover, the airbag is restrained in its proper folded state substantially all along its length by a simple wrapping operation.
    • 安全气囊包括气囊本体,以及能够防止气囊本体返回到展开状态的可撕裂的包裹件。 气囊体被折叠并容纳在车身内侧的开口的周缘上,并且折叠成杆状,使得当膨胀气体流入其中时可以使其膨胀以覆盖开口。 包裹件被制造成柔性且较长,并且基本上全部沿其长度包裹在折叠的安全气囊的外周上,使得其可以相对于折叠成杆状的气囊体的轴向倾斜地延伸 形状。 此外,通过简单的包装操作,安全气囊通过其长度基本上全部被约束在其适当的折叠状态。
    • 36. 发明授权
    • Method and apparatus for digital watermarking
    • 数字水印的方法和装置
    • US06704431B1
    • 2004-03-09
    • US09386993
    • 1999-08-31
    • Hiroshi OgawaTakao NakamuraAtsuki TomiokaYouichi Takashima
    • Hiroshi OgawaTakao NakamuraAtsuki TomiokaYouichi Takashima
    • G06K900
    • G06T1/0028G06T2201/0052G06T2201/0083H04N1/32154H04N19/467
    • A method for embedding digital watermark data in digital data contents includes the steps of obtaining a frequency coefficient of block data of digital data contents, obtaining a complexity of the block data, obtaining an amount of transformation of the frequency coefficient from the complexity and the digital watermark data, and embedding the digital watermark data by transforming the frequency coefficient. In addition, a method for reading digital watermark data includes the steps of calculating a probability of reading ‘1’ or ‘0’ in a read bit sequence by using a test method on the basis of binary distribution, determining the presence or absence of digital watermark data according to the probability, and reconstituting digital watermark data. Another method includes the steps of performing soft decision in code theory by assigning weights to the digital watermark sequence with a weighting function, and reconstituting digital watermark data.
    • 一种用于将数字水印数据嵌入数字数据内容的方法包括以下步骤:获得数字数据内容的块数据的频率系数,获得块数据的复杂度,从复杂度获得频率系数的变换量和数字 水印数据,并通过变换频率系数嵌入数字水印数据。 此外,读取数字水印数据的方法包括以下步骤:通过使用基于二进制分布的测试方法来计算读取比特序列中的“1”或“0”的概率,确定是否存在数字 水印数据根据概率,并重构数字水印数据。 另一种方法包括以下步骤:通过对具有加权函数的数字水印序列赋予权重,并重构数字水印数据,在代码理论中进行软判决。
    • 37. 发明授权
    • Multi-layer optical recording medium and method and apparatus for reproducing optical data
    • 多层光学记录介质以及用于再现光学数据的方法和装置
    • US06700845B1
    • 2004-03-02
    • US09762660
    • 2001-02-09
    • Yoichiro SakoTakao IhashiTatsuya InokuchiHiroshi OgawaMasanobu Yamamoto
    • Yoichiro SakoTakao IhashiTatsuya InokuchiHiroshi OgawaMasanobu Yamamoto
    • G11B390
    • G11B7/005G11B7/24G11B7/24038G11B2007/0006G11B2007/0013
    • An optical disc having a protection layer for protecting a recording layer located farther from a substrate and having a first recording layer and a second recording layer stacked on one side of the substrate, wherein the reflectance of one of the first and second recording layers is made higher than the reflectance of the other recording layer, and a reproducing device which uses this optical disc. The reproducing device casts a light beam emitted from a single light source onto the first recording layer or the second recording layer via a single objective lens, discriminates which of the first recording layer and the second recording layer the light beam emitted from the light source is cast on, on the basis of the result of detection of a reflected beam from the first recording layer or the second recording layer, moves the objective lens in a direction parallel to the optical axis of the objective lens on the basis of the result of discrimination, and condenses the light beam on the first recording layer or the second recording layer so as to carry out reproduction of information.
    • 一种光盘,其具有用于保护位于离基板更远的记录层的保护层,并且具有层叠在基板的一侧的第一记录层和第二记录层,其中制成第一和第二记录层之一的反射率 高于另一记录层的反射率,以及使用该光盘的再现装置。 再现装置通过单个物镜将从单个光源发射的光束投射到第一记录层或第二记录层上,鉴别第一记录层和第二记录层中从光源发出的光束是哪个 基于来自第一记录层或第二记录层的反射光束的检测结果,基于鉴别结果在与物镜的光轴平行的方向上移动物镜 并且将光束聚集在第一记录层或第二记录层上,以便执行信息的再现。