专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明授权

US07545493B2 Raman spectroscopic apparatus utilizing internal grating stabilized semiconductor laser with high spectral brightness 有权
标题翻译：利用具有高光谱亮度的内部光栅稳定的半导体激光器的拉曼光谱仪
公开(公告)号：US07545493B2
公开(公告)日：2009-06-09
申请号：US11608237
申请日：2006-12-07
申请人： Sean Xiaolu Wang , Qun Li
发明人： Sean Xiaolu Wang , Qun Li
IPC分类号： G01J3/44
CPC分类号： G01J3/44 , G01J3/10 , G01N21/64 , G01N21/65 , G01N2021/6417
摘要： A Raman spectroscopic apparatus utilizing a broad stripe semiconductor laser as the excitation light source is provided. The output spectrum of the semiconductor laser is narrowed and stabilized by an internal grating to provide high spectral brightness. A high throughput optical system is also disclosed for Raman scattering signal excitation and extraction, which takes full advantage of the high spectral brightness of the laser source.
摘要翻译：提供了利用宽条形半导体激光器作为激发光源的拉曼光谱仪。半导体激光器的输出光谱由内部光栅变窄并稳定，以提供高光谱亮度。还公开了用于拉曼散射信号激发和提取的高通量光学系统，其充分利用了激光源的高光谱亮度。

32. 发明申请

US20090117941A1 Structure of radio front end and antenna for mobile base station 审中-公开
标题翻译：无线电前端和移动基站天线的结构
公开(公告)号：US20090117941A1
公开(公告)日：2009-05-07
申请号：US12290472
申请日：2008-10-31
申请人： Qun Li
发明人： Qun Li
IPC分类号： H04M1/00
CPC分类号： H01Q1/246 , H01Q21/08 , H01Q21/24
摘要： A combination structure of radio front end and antenna for wireless base station and a means of share the antenna for multiple carriers are presented. The front part of the antenna has several independent radiation units for spatial combining radiation of multiple carriers. There is a heat dissipation cavity with natural air flow in back part of the antenna. The radio front end circuits formed a module with heat sink panel are installed in the cavity and on the back panel of the antenna.
摘要翻译：提出了一种用于无线基站的无线电前端和天线的组合结构以及用于多个载波共享天线的装置。天线的前部具有多个独立的辐射单元，用于空间组合多个载波的辐射。在天线后部有一个具有自然气流的散热腔。形成有散热片的模块的无线电前端电路安装在天线的腔体和后面板上。

33. 发明授权

US07218655B2 Solid state laser insensitive to temperature changes 有权
标题翻译：固态激光对温度变化不敏感
公开(公告)号：US07218655B2
公开(公告)日：2007-05-15
申请号：US11245451
申请日：2005-10-07
申请人： Sean Xiaolu Wang , Qun Li , Rongsheng Tian
发明人： Sean Xiaolu Wang , Qun Li , Rongsheng Tian
IPC分类号： H01S3/13 , H01S3/10
CPC分类号： H01S3/1312 , H01S3/09415 , H01S3/109 , H01S5/141
摘要： A temperature insensitive diode-pumped solid state laser is disclosed in this invention. The components of the laser are optimized with temperature insensitive design, making the laser capable of operating in a wide temperature range without using any cooling/heating system to maintain the temperature of its components.
摘要翻译：在本发明中公开了一种温度不敏感的二极管泵浦固态激光器。激光器的组件通过温度不敏感设计进行了优化，使得激光器能够在宽的温度范围内工作，而无需使用任何冷却/加热系统来维持其部件的温度。

34. 发明申请

US20060061761A1 Apparatus for fluorescence subtracted Raman spectroscopy 有权
公开(公告)号：US20060061761A1
公开(公告)日：2006-03-23
申请号：US11227432
申请日：2005-09-16
申请人： Qun Li , Sean Wang
发明人： Qun Li , Sean Wang
IPC分类号： G01J3/44 , G01N21/65
CPC分类号： G01N21/65 , G01J3/1256 , G01J3/4338 , G01J3/44 , G01J2001/4242 , G01N21/658
摘要： A fluorescence subtracted Raman spectroscopy apparatus uses a wavelength modulated tunable filter as the spectrometer. The wavelength modulation results in an amplitude modulation on the detected optical signal. By using a frequency selective detection technique, the Raman signal is amplified and extracted from the fluorescence background.

35. 发明授权

US5618813A Benzo[5.6]pyrano[2.3.4-ij]quinolizine and benzo[5.6]thiopyrano[2.3.4-ij]quinolizine derivatives as antibacterial and antineoplastic agents 失效
标题翻译：苯并[5.6]吡喃并[2,3,4-ij]喹嗪和苯并[5,6]噻喃并[2,3,4-ij]喹嗪衍生物作为抗细菌和抗肿瘤剂
公开(公告)号：US5618813A
公开(公告)日：1997-04-08
申请号：US451243
申请日：1995-05-26
申请人： Daniel T. Chu , Qun Li , Kathleen Raye
发明人： Daniel T. Chu , Qun Li , Kathleen Raye
IPC分类号： C07D491/16 , A61K31/535 , A61K31/44 , A61K31/495 , C07D491/147
CPC分类号： C07D491/16
摘要： Benzo[5.6]pyrano[2.3.4-ij]quinolizine and benzo[5.6]thiopyrano[2.3.4-ij]quinolizine compounds having the formula ##STR1## wherein A is sulfur or oxygen; R.sup.1 is selected from the group consisting of hydroxy, protected-hydroxy, C.sub.1 -C.sub.6 -alkoxy, halo, amino, C.sub.1 -C.sub.6 -alkylamino, hydroxy-C.sub.1 -C.sub.6 -alkylamino, bicyclic nitrogen-containing heterocycle, nitrogen-containing aromatic heterocycle, and nitrogen-containing heterocycle; R.sup.2 is selected from the group consisting of hydrogen, halo, C.sub.1 -C.sub.6 -alkyl, or halo-C.sub.1 -C.sub.6 -alkyl; R.sup.3 is selected from the group consisting of hydrogen, C.sub.1 -C.sub.6 -alkyl or C.sub.5 -C.sub.7 -cycloalkyl; and R.sup.4 and R.sup.5 are independently selected from the group consisting of hydrogen, C.sub.1 -C.sub.6 -alkyl or C.sub.1 -C.sub.6 -alkoxyl, having utility as intermediates or having antibacterial or antineoplastic activity
摘要翻译：苯并[5.6]吡喃并[2,3,4-ij]喹嗪和苯并[5,6]噻喃并[2,3,4-ij]喹嗪化合物，其中A为硫或氧; R 1选自羟基，被保护的羟基，C 1 -C 6 - 烷氧基，卤素，氨基，C 1 -C 6烷基氨基，羟基-C 1 -C 6烷基氨基，双环含氮杂环，含氮芳族杂环，和含氮杂环; R 2选自氢，卤素，C 1 -C 6 - 烷基或卤代-C 1 -C 6 - 烷基; R 3选自氢，C 1 -C 6 - 烷基或C 5 -C 7 - 环烷基; 并且R 4和R 5独立地选自氢，C 1 -C 6烷基或C 1 -C 6烷氧基，其可用作中间体或具有抗细菌或抗肿瘤活性

36. 发明授权

US5599816A Quinolizinone type compounds 失效
标题翻译：喹诺酮类化合物
公开(公告)号：US5599816A
公开(公告)日：1997-02-04
申请号：US482249
申请日：1995-06-07
申请人： Daniel T. Chu , Qun Li , Curt S. Cooper , Anthony K. L. Fung , Cheuk M. Lee , Jacob J. Plattner , Zhenkun Ma , Wei-Bo Wang
发明人： Daniel T. Chu , Qun Li , Curt S. Cooper , Anthony K. L. Fung , Cheuk M. Lee , Jacob J. Plattner , Zhenkun Ma , Wei-Bo Wang
IPC分类号： A61K38/00 , C07D213/61 , C07D213/68 , C07D455/02 , C07D471/04 , C07D491/16 , C07D519/00 , C07K5/06 , A61K31/495 , A61K31/44 , A61K31/505 , A61K31/535 , C07D471/02 , C07D487/00 , C07D498/02
CPC分类号： C07D471/04 , C07D213/61 , C07D213/68 , C07D455/02 , C07K5/06026 , A61K38/00
摘要： Antibacterial compounds having the formula ##STR1## and the pharmaceutically acceptable salts, esters and amides thereof, selected preferred examples of which include those compounds whereinA is.dbd.CR.sup.6 --;R.sup.1 is cycloalkyl of from three to eight carbon atoms or substituted phenyl;R.sup.2 is selected from the group consisting of ##STR2## R.sup.3 is halogen; R.sup.4 is hydrogen, loweralkyl, a pharmaceutically acceptable cation, or a prodrug ester group;R.sup.5 is hydrogen, loweralkyl, halo(loweralkyl), or --NR.sup.13 R.sup.14 ; andR.sup.6 is halogen, loweralkyl, halo(loweralkyl), hydroxy-substituted loweralkyl, loweralkoxy(loweralkyl), loweralkoxy, or amino(loweralkyl),as well as pharmaceutical compositions containing such compounds and the use of the same in the treatment of bacterial infections.
摘要翻译：具有式（I）的抗菌化合物及其药学上可接受的盐，酯和酰胺，其选择的优选实例包括其中A = CR 6 - 的那些化合物; R1是3至8个碳原子的环烷基或取代的苯基; R2选自 R3是卤素; R4是氢，低级烷基，药学上可接受的阳离子或前药酯基; R5为氢，低级烷基，卤代（低级烷基）或-NR13R14; 并且R6是卤素，低级烷基，卤代（低级烷基），羟基取代的低级烷基，低级烷氧基（低级烷基），低级烷氧基或氨基（低级烷基），以及含有这些化合物的药物组合物及其用于治疗细菌感染。

37. 发明授权

US5166208A Fredericamycin A derivatives 失效
标题翻译：弗雷德霉素A衍生物
公开(公告)号：US5166208A
公开(公告)日：1992-11-24
申请号：US774780
申请日：1991-10-09
申请人： Thomas R. Kelly , Qun Li , Vidya B. Lohray
发明人： Thomas R. Kelly , Qun Li , Vidya B. Lohray
IPC分类号： C07D221/20
CPC分类号： C07D221/20
摘要： The invention pertains to derivatives of fredericamycin A, their preparation and pharmaceutical uses as antitumor agents.
摘要翻译：本发明涉及fredericamycin A的衍生物，其制备方法和药物用途作为抗肿瘤剂。

38. 发明授权

US10746658B1 Method for material identification with laser induced breakdown spectroscopy (LIBS) 有权
公开(公告)号：US10746658B1
公开(公告)日：2020-08-18
申请号：US16662180
申请日：2019-10-24
申请人： Qun Li , Sean Xiaolu Wang
发明人： Qun Li , Sean Xiaolu Wang
IPC分类号： G01J3/30 , G01N21/71 , G01J3/443
摘要： This invention discloses a method for material identification by analyzing the LIBS spectrum of the sample. The LIBS spectrum is pre-processed to equalize the contribution of elements with strong and weak emission lines. In the meantime, the number of spectral variables is reduced to enhance the specificity and minimize the influence of instrument noise. Commonly used spectrum identification and library search algorithms are then applied to the pre-processed LIBS spectrum for material identification.

39. 发明授权

US09909923B2 Laser induced breakdown spectroscopy (LIBS) apparatus based on high repetition rate pulsed laser 有权
公开(公告)号：US09909923B2
公开(公告)日：2018-03-06
申请号：US14845980
申请日：2015-09-04
申请人： Sean Xiaolu Wang , Qun Li
发明人： Sean Xiaolu Wang , Qun Li
IPC分类号： G01J3/443 , G01J3/10 , G01J3/02 , G01J3/06 , G01J3/28
CPC分类号： G01J3/443 , G01J3/0208 , G01J3/06 , G01J3/10 , G01J3/28
摘要： This invention discloses a laser induced breakdown spectroscopy (LIBS) apparatus based on a high repetition rate pulsed laser. The laser produces a train of laser pulses at a high repetition rate in the kHz or even higher range. When the laser beam hits the sample, it generates several thousands of micro-plasmas per second. Synchronized miniature CCD array optical spectrometer modules collect the LIBS signal from these micro-plasmas. By adjusting the integration time of the spectrometer to cover a plurality of periods of the laser pulse train, the spectrometer integrates the LIBS signal produced by this plurality of laser pulses. Hence the intensity of the obtained LIBS spectrum can be greatly improved to increase the signal-to-noise ratio (SNR) and lower the limit of detection (LOD). In addition, the influence of pulse to pulse variation of the laser is minimized since the obtained LIBS spectrum is the spectrum of a plurality of micro-plasmas produced by a plurality of laser pulses. The high repetition rate laser also makes it possible for fast scanning the laser beam over the sample surface such that an average spectrum of the sample is collected to overcome the sample non-uniformity issue or for performing spectral imaging of the sample by correlating the obtained LIBS spectrum with the position of the scanning laser beam.

40. 发明申请

US20170045459A1 Laser Induced Breakdown Spectroscopy (LIBS) Apparatus for Analyzing Biological Samples 有权
标题翻译：用于分析生物样品的激光诱导分解光谱（LIBS）设备
公开(公告)号：US20170045459A1
公开(公告)日：2017-02-16
申请号：US15235170
申请日：2016-08-12
申请人： Sean Xiaolu Wang , Qun Li
发明人： Sean Xiaolu Wang , Qun Li
IPC分类号： G01N21/71
CPC分类号： G01N21/718 , G01J3/0208 , G01J3/10 , G01J3/28 , G01J3/2803 , G01J3/443 , G01N2201/0612 , G01N2201/129
摘要： This invention discloses a laser induced breakdown spectroscopy (LIBS) apparatus based on high repetition rate pulsed laser. The laser produces a train of laser pulses at a high repetition rate in the kHz (or even higher) range. When the laser beam hits the biological sample, it generates several thousands of micro-plasmas per second. Synchronized miniature CCD array optical spectrometer modules collect the LIBS signal from these micro-plasmas. By adjusting the integration time of the spectrometer to cover a plurality of periods of the laser pulse train, the spectrometer integrates the LIBS signal produced by this plurality of laser pulses. Hence the intensity of the obtained LIBS spectrum can be greatly improved to increase the signal-to-noise ratio (SNR) and lower the level of detection (LOD).
摘要翻译：本发明公开了一种基于高重复率脉冲激光的激光诱导击穿光谱（LIBS）装置。激光器在kHz（或甚至更高）的范围内以高重复率产生一串激光脉冲。当激光束撞击生物样品时，它每秒产生数千个微等离子体。同步微型CCD阵列光谱仪模块从这些微等离子体收集LIBS信号。通过调整光谱仪的积分时间来覆盖激光脉冲串的多个周期，光谱仪将由多个激光脉冲产生的LIBS信号进行积分。因此，可以大大提高获得的LIBS频谱的强度，以增加信噪比（SNR）并降低检测电平（LOD）。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式