公开(公告)号：US4992619A

公开(公告)日：1991-02-12

申请号：US320008

申请日：1989-03-07

申请人： Shunichi Koide ,  Shinji Aihara ,  Hiroshi Takeshita ,  Harumasa Tanabe ,  Masami Takao ,  Hitoshi Hatakeyama

发明人： Shunichi Koide ,  Shinji Aihara ,  Hiroshi Takeshita ,  Harumasa Tanabe ,  Masami Takao ,  Hitoshi Hatakeyama

IPC分类号： C07C1/00 ,  C07C7/00 ,  C07C7/14 ,  C07C7/177 ,  C07C15/24 ,  C07C67/00

CPC分类号： C07C7/14 ,  C07C7/005 ,  C07C7/177

摘要： The invention intends to separating a methyl derivative of naphthalene (2,6-dimethyl naphthalene or 2-methyl naphthalene) from a mixture material in a high purity more than 98 weight %. The starting material is preliminarily treated at a raised temperature up to 220.degree. c. at the highest and with LHSV of 0.1-6 Hr.sup.-1 in the presence of an acid catalyst usually used for olefin polymerization. The treated material is distillated to remove the polymerized impurities and to raise the naphthalene derivative content at least up to 50 weight %. And then the obtained material is subjected to the crystallization under a pressure of 500-2500 kgf/cm.sup.2 at a temperature of 80.degree.-150.degree. C. (for 2,6-DMN) or 10.degree.-35.degree. C. (for 2-MN).

公开(公告)号：US5220098A

公开(公告)日：1993-06-15

申请号：US756792

申请日：1991-09-09

申请人： Kazumoto Nakamura ,  Shinji Aihara ,  Yutaka Mito ,  Masami Takao ,  Hitoshi Hatakeyama

发明人： Kazumoto Nakamura ,  Shinji Aihara ,  Yutaka Mito ,  Masami Takao ,  Hitoshi Hatakeyama

IPC分类号： C07C7/14 ,  C07C15/24

CPC分类号： C07C7/14

摘要： The present invention relates to a process for separating 2,7-DMN, characterized in that a mixture containing at least 50% by weight of 2,7-DMN and the other DMN isomers obtained by preliminarily concentrating a fraction in the range of 250.degree.-270.degree. C. of catalytically cracked petroleum oil is preliminarily adjusted to a temperature of 60.degree.-90.degree. C. to form a slurry containing the crystal of 2,7-DMN, which is placed in a tightly sealed pressure vessel, adiabatically pressurized to the range of 500-2,500 kgf/cm.sup.2 and solidified to form a state of co-existing of solid and liquid phases, liquid is then discharged under pressure from the solid-liquid co-existing system, the solid remaining in the vessel is pressed to discharge the liquid remaining between the solid particles, which are integrated to give 2,7-DMN having a purity of 98% by weight or more.

公开(公告)号：US06536593B2

公开(公告)日：2003-03-25

申请号：US09755057

申请日：2001-01-08

申请人： Hitoshi Hatakeyama

发明人： Hitoshi Hatakeyama

IPC分类号： B65D7302

CPC分类号： B65D73/02

摘要： An embossed carrier tape used for carrying electronic devices, includes a plurality of pockets in which the electronic devices are held. Each of the pockets includes a plurality of inner side surfaces which are separated by ridge lines. Each of the pockets is shaped so that corners of the electronic device are not in contact with the ridge lines thereof.

摘要翻译： 用于承载电子装置的压纹载带包括多个袋子，电子装置被保持在其中。 每个凹穴包括由脊线分开的多个内侧表面。 每个口袋的形状使得电子设备的拐角不与其脊线接触。

公开(公告)号：US06555559B1

公开(公告)日：2003-04-29

申请号：US09582071

申请日：2000-08-01

申请人： Hisanori Wakita ,  Naohiro Yamada ,  Hitoshi Hatakeyama ,  Takeshi Ishigaki ,  Noriyuki Hirano ,  Takeshi Mori

发明人： Hisanori Wakita ,  Naohiro Yamada ,  Hitoshi Hatakeyama ,  Takeshi Ishigaki ,  Noriyuki Hirano ,  Takeshi Mori

IPC分类号： A61K3144

CPC分类号： C07D405/06 ,  C07D307/93 ,  C07D407/06 ,  C07F9/65517

摘要： The present invention provides novel PGI2 derivatives and an anti Helicobacter agent, a platelet function potentiating agent or a cervical ripening agent containing any of the derivatives.

摘要翻译： 本发明提供新型PGI2衍生物和抗幽门螺杆菌药，血小板功能增强剂或含有任何衍生物的子宫颈成熟剂。