Patents by Inventor An Ma

An Ma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8299241
    Abstract: The present invention provides processes and intermediates for the preparation of (R)-8-chloro-1-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine and salts thereof which are useful as serotonin-2C (5-HT2C) receptor agonists for the treatment of, for example, obesity.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: October 30, 2012
    Assignee: Arena Pharmaceuticals, Inc.
    Inventors: Tawfik Gharbaoui, Sagun K. Tandel, You-An Ma, Marlon Carlos, John Robert Fritch
  • Publication number: 20110015438
    Abstract: The present invention provides processes and intermediates useful in the preparation of 8-chloro-1-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine, a serotonin (5-HT) receptor agonist that is useful in the treatment or prophylaxis of, for example, central nervous system disorders, such as obesity.
    Type: Application
    Filed: March 3, 2009
    Publication date: January 20, 2011
    Inventors: Marlon V. Carlos, Ryan O. Castro, Tawfik Gharbaoui, Xiao-Xiong Lu, You-An Ma, Nicholas D. San Martin
  • Publication number: 20100305316
    Abstract: The present invention provides processes and intermediates for the preparation of (R)-8-chloro-1-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine and salts thereof which are useful as serotonin-2C (5-HT2C) receptor agonists for the treatment of, for example, obesity.
    Type: Application
    Filed: December 4, 2007
    Publication date: December 2, 2010
    Inventors: Tawfik Gharbaoui, Sagun K. Tandel, You-An Ma, Marlon Carlos, John Robert Fritch
  • Patent number: 7785547
    Abstract: An apparatus and a method that increase the concentration of recycled hydrogen in the hydrogenation unit are disclosed having a hydration separation unit included between the high-pressure separator and hydrocracking reactor. A part of the recycled hydrogen contacts with the water-in-oil microemulsion to form hydrates from which the light hydrocarbon components are removed. The gas flow entering into the hydration separation unit is present in amount of 20%˜100% of the total gas flow coming from the high-pressure separator; the water-in-oil microemulsion, in which the volume ratio of oil and water is 1:1 to 5:1 may increase hydrogen partial pressure in the reactor and thus upgrade the performance of hydrogenation.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: August 31, 2010
    Assignees: PetroChina Company Limited, China University of Petroleum Beijing
    Inventors: Guangjin Chen, An Ma, Lijun Yan, Xuqiang Guo, Changyu Sun, Xiulin Wang
  • Patent number: 7497583
    Abstract: A light provider for an umbrella and stand assembly, comprising a body releasably attachable to the assembly, a source or sources of electric light carried by the body, to direct light away from the body, and incident light responsive means on the body to provide electrical energization for the light source, the means configured to receive incident light from a direction or directions spaced away from light directed from the source or sources.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: March 3, 2009
    Inventor: Oliver Joen-An Ma
  • Publication number: 20080112862
    Abstract: An apparatus and a method that increase the concentration of recycled hydrogen in the hydrogenation unit are disclosed having a hydration separation unit included between the high-pressure separator and hydrocracking reactor. A part of the recycled hydrogen contacts with the water-in-oil microemulsion to form hydrates from which the light hydrocarbon components are removed. The gas flow entering into the hydration separation unit is present in amount of 20%˜100% of the total gas flow coming from the high-pressure separator; the water-in-oil microemulsion, in which the volume ratio of oil and water is 1:1 to 5:1 may increase hydrogen partial pressure in the reactor and thus upgrade the performance of hydrogenation.
    Type: Application
    Filed: October 23, 2007
    Publication date: May 15, 2008
    Inventors: Guangjin Chen, An Ma, Lijun Yan, Xuqiang Guo, Changyu Sun, Xiulin Wang
  • Patent number: 7316773
    Abstract: The present invention relates to a catalytic cracking process and a device used in the process in particular, the present invention provides a catalytic cracking process, which comprises which comprises: 1) catalytic cracking a feedstock in the first riser for less than about 1.5 second and sending the resultant stream into the first separating device,; 2) catalytic cracking the recycle oil obtained from the first separating device in the second riser for less than about 1.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: January 8, 2008
    Assignees: Petrochina Company Limited, University of Petroleum China
    Inventors: Jianfang Zhang, An Ma, Honghong Shan, Chaohe Yang, Genlin Niu, Yongshan Tu, Feng Du, Yudong Sun, Zheng Li, Chunyi Li, Zhongxiang Han
  • Publication number: 20070259879
    Abstract: This invention relates to piperazine and piperidine biaryl compounds of Formula (I): or a pharmaceutically acceptable prodrug, salt, polymorph, solvate, enantiomer, diastereomer, racemate, mixture of stereoisomers thereof, or derivative thereof; and to processes for preparing the compounds or pharmaceutical compositions containing the same. The compounds and pharmaceutical compositions of the present invention are provided for use in the treatment of HIV infection and/or AIDS.
    Type: Application
    Filed: March 6, 2007
    Publication date: November 8, 2007
    Inventors: Rong Lu, John Tucker, Jason Pickens, Tatiana Zinevitch, Sergey Sviridov, Vitaly Konoplev, Enugurthi Brahmachary, You-An Ma
  • Patent number: 7134762
    Abstract: A light provider for an umbrella and stand assembly, including a body releasably attachable to the assembly, a source or sources of electric light carried by the body, to direct light away from the body, and incident light responsive means on the body to provide electrical energization for the light source, the means configured to receive incident light from a direction or directions spaced away from light directed from the source or sources.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: November 14, 2006
    Inventor: Oliver Joen-An Ma
  • Publication number: 20050277801
    Abstract: This application provides processes for recovering hydrogen, ethylene and ethane from dry gas or separating ethylene cracked gas from dry gas of refinery plants, wherein a hydrating separation may be combined with for example a freezing or absorbing separation so as to separate a multiple gas mixture.
    Type: Application
    Filed: December 20, 2004
    Publication date: December 15, 2005
    Inventors: Guangjin Chen, Xuqiang Guo, Guanjing Wu, An Ma, Lijun Yan, Hu Luo, Changyu Sun
  • Publication number: 20040178120
    Abstract: The present invention relates to a catalytic cracking process and a device used in the process in particular, the present invention provides a catalytic cracking process, which comprises which comprises:
    Type: Application
    Filed: March 15, 2004
    Publication date: September 16, 2004
    Inventors: Jianfang Zhang, An Ma, Honghong Shan, Chaohe Yang, Genlin Niu, Yongshan Tu, Feng Du, Yudong Sun, Zheng Li, Chunyi Li, Zhongxiang Han
  • Publication number: 20040123891
    Abstract: Umbrella apparatus for pivotally connecting an umbrella hub and strut, the combination comprising a holder, a keeper to receive and pivotally connect to said holder, one of the holder and keeper located on the hub, and the other of said holder and keeper located on the strut.
    Type: Application
    Filed: May 19, 2003
    Publication date: July 1, 2004
    Inventor: Oliver Joen-An Ma
  • Publication number: 20040108439
    Abstract: A patio umbrella base has a base housing having an aluminum upper wall configured to define an interior space. The umbrella base further includes at least one cast iron piece positioned inside the interior space, and an aluminum seal provided over the cast iron piece(s) and securing the cast iron piece(s) to the upper wall. The aluminum seal can be provided by pouring molten aluminum over the cast iron piece(s) in a manner which completely covers the cast iron piece(s).
    Type: Application
    Filed: December 5, 2002
    Publication date: June 10, 2004
    Inventor: Oliver Joen-An Ma
  • Publication number: 20040060620
    Abstract: In accordance with the invention, nanostructured metallic materials having high tensile strength and increased ductility are prepared by providing a metallic material, deforming the metallic material to form a plurality of dislocation cell structures, annealing the material at a temperature from about 0.3 to about 0.7 of its absolute melting temperature, and cooling the annealed metallic material. The result is a nanostructured metal or alloy having increased tensile strength as compared with the corresponding coarse-grained material and substantially greater ductility as compared with nanostructured material made by conventional processes. Using this process applicants have made nanostructured alloys with tensile strengths in excess of 1.5 Gpa and ductility greater than 1 per cent strain-to-failure. They have also made nanostructured metals with tensile strength in excess of 400 MPa and ductility in excess of 50% strain-to-failure.
    Type: Application
    Filed: April 29, 2003
    Publication date: April 1, 2004
    Applicant: JOHNS HOPKINS UNIVERSITY
    Inventors: Ev An Ma, Yinmin Wang, Mingwei Chen
  • Patent number: 6660157
    Abstract: The invention relates to a new and improved heavy oil hydrocracking process using a multimetallic liquid catalyst in a slurry-bed reactor, particularly an improvement of lightweight treatment of heavy oil in the petroleum processing technology. According to the present invention, a slurry-bed hydrocracking reactor and a highly dispersed multimetallic liquid catalyst are mainly applied during the process. A fixed-bed hydrotreating reactor is also used on line to enhance lightweight oil yield from heavy oil under normal pressure.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: December 9, 2003
    Assignees: PetroChina Company Limited, University of Petroleum
    Inventors: Guohe Que, Cungui Men, Chunxu Meng, An Ma, Jiashun Zhou, Wenan Deng, Zongxian Wang, Baoquan Mu, Chenguang Liu, Dong Liu, Shichang Liang, Bin Shi
  • Publication number: 20030147791
    Abstract: A multi-stage loop reactor, employed in various gas-liquid or gas-liquid-solid chemical reaction systems, which comprises a reactor body, draft tube(s) inside the reactor body, and a gas distributor at the bottom of draft tube. The draft tube can include one or more sections. The multi-stage loop reactor of the present invention has a higher mass transfer rate because the different phases are well mixed throughout the reactor, and the gas bubbles are distributed evenly everywhere. The reactor of this invention can be extensively applied in various gas-liquid or gas-liquid-solid reaction processes including the oxidization process, hydrogenation process, hydrocracking process, coal liquification process, fermentation process, hydrocarbon processing process, and biological treatment of waste water, etc.
    Type: Application
    Filed: December 18, 2002
    Publication date: August 7, 2003
    Inventors: Fuxin Ding, Naiju Yuan, Zheng Liu, An Ma, Yong Qiao
  • Publication number: 20020125172
    Abstract: The invention relates to a new and improved heavy oil hydrocracking process using a multimetallic liquid catalyst in a slurry-bed reactor, particularly an improvement of lightweight treatment of heavy oil in the petroleum processing technology. According to the present invention, a slurry-bed hydrocracking reactor and a highly dispersed multimetallic liquid catalyst are mainly applied during the process. A fixed-bed hydrotreating reactor is also used on line to enhance lightweight oil yield from heavy oil under normal pressure.
    Type: Application
    Filed: November 2, 2001
    Publication date: September 12, 2002
    Applicant: PetroChina Company Limited/University of Petroleum (East China)
    Inventors: Guohe Que, Cungui Men, Chunxu Meng, An Ma, Jiashun Zhou, Wenan Deng, Zongxian Wang, Baoquan Mu, Chenguang Liu, Dong Liu, Shichang Liang, Bin Shi
  • Patent number: 6446650
    Abstract: A tilt device for a patio umbrella has a collar that is provided for slidable movement around the exterior surface of a first pole section of the patio umbrella, and a vertical spring positioned inside the first pole section and having an upper end provided in a fixed position. The tilt device further includes a coupling leg coupled to the collar and positioned inside the first pole section, with the coupling leg having a top edge that abuts the lower end of the vertical spring. The tilt device also has a guide track positioned inside a second pole section of the patio umbrella, with a bottom edge of the coupling leg positioned inside the guide track for reciprocating movement therein.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: September 10, 2002
    Assignee: Treasure Garden, Inc.
    Inventor: Oliver Joen-An Ma
  • Publication number: 20020108887
    Abstract: This invention relates to a new two-stage riser catalytic cracking process, particularly to an improvement of the conventional riser reactor and reaction-regeneration system by application of a two-stage riser reactor to fulfill the aims of the concatenation of oil-vapor, catalyst in relays as result in shortening reaction time and increasing average performance of the catalyst.
    Type: Application
    Filed: December 13, 2001
    Publication date: August 15, 2002
    Applicant: PetroChina Company Limited and University of Petroleum (East China)
    Inventors: Jianfang Zhang, Honghong Shang, Chaohe Yang, An Ma, Genlin Niu, Feng Du, Yudong Sun, Zheng Li, Chunyi Li, Zhongxiang Han, Aijun Duan
  • Patent number: D518629
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: April 11, 2006
    Inventor: Oliver Joen-An Ma