Tag Archives: purity

Demodulating method capable of maintaining specular purity

Application Number  00128580 Application Date  2000.09.11 Publication Number  1291827 Publication Date  2001.04.18 Priority Information   1999/9/14 FR 99/11481   International Classification  H03D1/04;H04B1/16   Applicant(s) Name  Koninklijke Philips Electronics N.V.   Address     Inventor(s) Name  N. Grell   Patent Agency Code  72001 Patent Agent  chen jingjun AbstractThe invention relates to a method of demodulating a… Read More »

Cryogenic rectifying system for producing very high purity oxygen

Application Number: 00126404Application Date: 2000.08.29Publication Number: 1286387Publication Date: 2001.03.07Priority Information: 1999/8/31 US 09/386276International: F25J3/04Applicant(s) Name: Praxair Technology, Inc.Address: Inventor(s) Name: D.P. Bonaquist;J.F. BillinghamPatent Agency Code: 72001Patent Agent: lu xinhuaAbstract A cryogenic air separation system for producing very high purity oxygen employing a lower pressure column having a volume in its lower portion set off by… Read More »

Decomposition process of preparing high purity Sb2O3

Application Number: 00112862Application Date: 2000.04.17Publication Number: 1318517Publication Date: 2001.10.24Priority Information: International: C01G30/00Applicant(s) Name: Luo HuijunAddress: Inventor(s) Name: Luo HuijunPatent Agency Code: 52100Patent Agent: wu wujuAbstract The decomposition process includes preparing suspension with antimonic oxide and water, eliminating impurities, feeding to reactor, adding nitric acid to form its 5% dilute with the water in suspension, steam… Read More »

Preparation method of optical purity lansoprazole

Application Number: 00113036Application Date: 2000.06.19Publication Number: 1329003Publication Date: 2002.01.02Priority Information: International: A61P1/04;C07D401/12Applicant(s) Name: Chengdu Inst. of Organic Chemistry, Chinese Academy of SciencesAddress: Inventor(s) Name: Deng Jingen;Peng Xiaohua;Cui XinPatent Agency Code: 51001Patent Agent: zhang yigongAbstract The present invention belongs to the field of optical isomer compound preparation technology, and is characterized by that it uses optical… Read More »

Radom 'primer pair' and method for determining purity of crop seed therewith

Application Number: 00114183Application Date: 2000.04.05Publication Number: 1266609Publication Date: 2000.09.20Priority Information: International: A01C1/00Applicant(s) Name: Vegetables Inst., Guangdong Academy of Agricultural SciencesAddress: Inventor(s) Name: Wang Deyuan;Li Naijian;Deng YicaiPatent Agency Code: 44201Patent Agent: luo guanxiangAbstract The present invention relates to a random "primer pair" and its RPPA amplification labeling method for determining the purity of crop seed. It… Read More »

Decontaminating and purity maintaining technology for three-line hybrid rice

Application Number: 00114492Application Date: 2000.04.18Publication Number: 1318288Publication Date: 2001.10.24Priority Information: International: A01H1/02Applicant(s) Name: Zhang JiwenAddress: Inventor(s) Name: Zhang Jiwen;Wu XiaozhiPatent Agency Code: 00000Patent Agent: Abstract The method of utilizing herbicide bentazone to eliminate female parent sterile line and its maintaining line seedling mixed to three-way hybrid rice seedling includes selecting the maintaining line with homozygous… Read More »

Preparation of high purity bisphenol A

Application Number: 00118372Application Date: 2000.06.15Publication Number: 1300729Publication Date: 2001.06.27Priority Information: 1999/12/23 PL P-337475International: C07C37/16;C07C39/16Applicant(s) Name: Instytut Ciezkiey Syntezy Organicznej BlackowniaAddress: Inventor(s) Name: M. Kiddic;A. Gafderzic;Z. PockerskiPatent Agency Code: 11038Patent Agent: sun aiAbstract The invention relates to a method of preparing high purity bisphenol A by distillation, separation and crystallization in condensation process of phenol and… Read More »

Process for preparing high purity microspheric uniform pore size silica gel for high efficiency liquid phase chromatography

Application Number: 00123252Application Date: 2000.11.15Publication Number: 1351958Publication Date: 2002.06.05Priority Information: International: B01J13/02;C01B33/152;C01B33/157Applicant(s) Name: Dalian Inst. of Chemical Physics, Chinese ACademy of SciencesAddress: Inventor(s) Name: Yang Xinli;Wang Junde;Liu XueliangPatent Agency Code: 21002Patent Agent: zhang chenAbstract During the preparation of the high-purity microspheric silica gel, tetraethoxy silane is first hydrolyzed partially to produce viscous liquid polyethoxy silane,… Read More »

High purity magnesium hydrate and preparation thereof

Application Number: 00105767Application Date: 2000.04.06Publication Number: 1270143Publication Date: 2000.10.18Priority Information: 1999/4/13 US 09/290839International: B01D53/48;C01F5/14;C01F5/22;C01F5/42Applicant(s) Name: Dravo Lime Co.Address: Inventor(s) Name: D. W. Berryskau;M. BabbiPatent Agency Code: 11021Patent Agent: li yueAbstract Magnesium hydroxide of high purity, having a fine particle size suitable for use in flame retardants and other high-end uses, is produced by utilizing flue… Read More »

Process for recovering high purity metal gallium from liquid phase epitaxial waste liquid

Application Number: 00103907Application Date: 2000.02.29Publication Number: 1311343Publication Date: 2001.09.05Priority Information: International: C22B58/00Applicant(s) Name: Changchun Inst. of Optics and Fine Mechanics and Physics, Chinese Academy of SciAddress: Inventor(s) Name: Yuan Jinshan;Zhang Fuwen;Li XiangwenPatent Agency Code: 22001Patent Agent: liang airongAbstract To recover high purity metal gallium from the waste fluid phase epitaxial is to add the floating… Read More »

High purity monochloroacetic acid and preparing process thereof

Application Number: 00102226Application Date: 2000.02.15Publication Number: 1309115Publication Date: 2001.08.22Priority Information: International: C07C53/16;C07C51/29Applicant(s) Name: Daicel Chemical Industry Co., Ltd.Address: Inventor(s) Name: Okada MasayukiPatent Agency Code: 11105Patent Agent: wu xiaonanAbstract A process for preparing high-purity monochloroacetic acid includes the monochloroacetic acid product containing dichloroacetic acid (10 ppm-2 wt.%) and acetic acid (0-5 wt.%) is hydrogenated at 100-188… Read More »

Process for producing high purity 1,8-dinitro anthraquinone

Application Number: 00101555Application Date: 2000.01.18Publication Number: 1261613Publication Date: 2000.08.02Priority Information: International: C09B51/00Applicant(s) Name: Zhongxing Chemical Co., Ltd., ZhaoyuanAddress: Inventor(s) Name: Yang XichuanPatent Agency Code: 21200Patent Agent: shi huasongAbstract Anthraquinone is dinitrified to obtain the mixture of 1,8-,1,5-, 1,6- and 1,7-dinitro anthraquinone isomers. By means of the large crystal characteristics of 1,8-dinitro anthraquinone, 1,8-dinitro anthraquinone product… Read More »