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    • 1. 外观设计
      USD850699S1 Troffer light 有权
    • Troffer light
    • USD850699S1
    • 2019-06-04
    • US29630949
    • 2017-12-25
    • Yibo Xu
    • Yibo Xu
    • FIG. 1 is a perspective view of the front of a troffer light showing my new design;
      FIG. 2 is a front elevational view of the troffer light of FIG. 1;
      FIG. 3 is a rear elevational view of the troffer light of FIG. 1;
      FIG. 4 is a left side elevational view of the troffer light of FIG. 1;
      FIG. 5 is a right side elevational view of the troffer light of FIG. 1;
      FIG. 6 is a top plan view of the troffer light of FIG. 1;
      FIG. 7 is a bottom plan view of the troffer light of FIG. 1;
      FIG. 8 is an exploded view of the light frame of the troffer light taken from the circled portion in FIG. 1; and,
      FIG. 9 is a perspective view of the rear of a troffer light showing my new design.
      The broken lines in the drawings illustrate the environment of the troffer light and form no part of the claimed design.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 6. 发明授权
      US5852198A Wittig reagents and method for preparing .alpha.,.beta.-unsaturated phosphonates 失效
    • Wittig reagents and method for preparing .alpha.,.beta.-unsaturated phosphonates
    • Wittig试剂和制备α，β-不饱和膦酸酯的方法
    • US5852198A
    • 1998-12-22
    • US831233
    • 1997-04-02
    • Yibo Xu , Michael T. Flavin
    • Yibo Xu , Michael T. Flavin
    • C07F9/40 , C07F9/535 , C07F9/54 , C07H19/20
    • C07F9/5421 , C07F9/4006 , C07F9/4015 , C07F9/4056 , C07F9/5352 , C07H19/20
    • Wittig-type reagents and methods of preparation and use thereof for preparing .alpha.,.beta.-unsaturated phosphonate esters from aldehydes and ketones are disclosed. The Wittig-type reagents have the following formulae: ##STR1## wherein X represents triflate, halide, BF.sub.4, SbF.sub.6, or ClO.sub.4 ; R.sub.1 represents alkyl, aryl or arylalkyl; and R.sub.2 represents alkyl, aryl or arylalkyl, provided that R.sub.1 and R.sub.2 not represent phenyl at the same time. The Wittig reagent diethyl phosphono-methylidenetriphenylphosphorane (1b) has been successfully synthesized for the first time via its phosphonium triflate salt (4a), by treating diethyl phosphonomethyltriflate with triphenylphosphine according to the disclosed method. The procedure has been applied to the synthesis of other new Wittig-type reagents such as phosphoranes and phosphonium salts. The new Wittig reagents thus synthesized were treated with various aldehydes and an activated ketone, affording the corresponding .alpha.,.beta.-unsaturated phosphonates, saturated phosphonates or phosphoric acids. Triphenylphosphorane 1b and triphenylphosphonium 4a led to both cis and trans isomers with the latter being predominant, while trans isomers were almost exclusively formed when tributyl reagents (1c and 4d) were used.
    • 公开了Wittig型试剂及其制备方法及其用于从醛和酮制备α，β-不饱和膦酸酯的方法。 Wittig型试剂具有下式：其中X代表三氟甲磺酸酯，卤化物，BF4，SbF6或ClO4; R1代表烷基，芳基或芳基烷基; 并且R 2表示烷基，芳基或芳烷基，条件是R 1和R 2不同时表示苯基。 根据所公开的方法，通过其三氟甲磺酸盐（4a），通过用三苯基膦处理二乙基膦酰甲基三氟甲磺酸酯，Wittig试剂二乙基膦酰基 - 亚甲基三苯基正膦（1b）首次成功合成。 该方法已被应用于合成其他新的维蒂希型试剂如磷烷和鏻盐。 将如此合成的新的Wittig试剂用各种醛和活化酮处理，得到相应的α，β-不饱和膦酸酯，饱和膦酸酯或磷酸。 三苯基磷烷1b和三苯基鏻4a同时导致顺式和反式异构体，后者是主要的，而当使用三丁基试剂（1c和4d）时，反式异构体几乎完全形成。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 7. 外观设计
      USD861948S1 Emergency panel light 有权
    • Emergency panel light
    • USD861948S1
    • 2019-10-01
    • US29630951
    • 2017-12-25
    • Yibo Xu
    • Yibo Xu
    • FIG. 1 is a perspective view of the front of an emergency panel light showing my new design;
      FIG. 2 is a front elevational view of the emergency panel light of FIG. 1;
      FIG. 3 is a rear elevational view of the emergency panel light of FIG. 1;
      FIG. 4 is a left side elevational view of the emergency panel light of FIG. 1;
      FIG. 5 is a right side elevational view of the emergency panel light of FIG. 1;
      FIG. 6 is a top plan view of the emergency panel light of FIG. 1;
      FIG. 7 is a bottom plan view of the emergency panel light of FIG. 1;
      FIG. 8 is an enlarged view of the emergency panel light taken from the circled portion in FIG. 1;
      FIG. 9 is an enlarged view of the emergency panel light taken from the circled portion in FIG. 4; and,
      FIG. 10 is a perspective view of the rear of an emergency panel light showing my new design.
      The broken lines in the drawings illustrate the environment of the emergency panel light which forms no part of the claimed design.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
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