Patents by Inventor Chiajen Lai

Chiajen Lai 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).

  • Publication number: 20060293304
    Abstract: A process is provided for preparing triazole substituted azaindoleoxoacetic piperazine derivative. Novel intermediates produced in the above process, and novel N-1 and amorphous forms of a 1,2,3-triazole substituted azaindoloxoacetic piperazine derivatives and processes for producing such novel forms are also provided.
    Type: Application
    Filed: June 19, 2006
    Publication date: December 28, 2006
    Inventors: Nachimuthu Soundararajan, Yuping Qiu, Wenhao Hu, David Kronenthal, Pierre Sirard, Jean Lajeunesse, Robert Droghini, Ramakrishnan Chidambaram, Xinhua Qian, Kenneth Natalie, Shawn Pack, Nathan Reising, Erqing Tang, Michael Fakes, Qi Gao, Feng Qian, Blisse Vakkalagadda, Chiajen Lai, Shan-Ming Kuang
  • Publication number: 20060128726
    Abstract: A process is provided for preparing novel crystalline forms, namely selectively and consistently preparing the H2-1 dihydrate crystalline form, the H2-2 dihydrate crystalline form, the N-3 anhydrate crystalline form and the MTBE solvate crystalline form of the IKur compound (2S)-1-[[(7R)-7-(3,4-dichlorophenyl)-4,7-dihydro-5-methylpyrazolo[1,5]pyrimidine-6-yl]carbonyl]-2-(4-fluorophenyl)pyrrolidine. The process includes preparation of the H2-1 and H2-2 forms which are used in preparing the N-3 anhydrate form which is particularly stable and has suitable flow properties and desired particle size. Novel H2-1 dihydrate and H2-2 dihydrate forms, the N-3 anhydrate form and the MTBE solvate form of the above IKur compound, pharmaceutical compositions containing such novel forms and a method for preventing or treating arrhythmias including atrial fibrillation and IKur related conditions employing such novel forms are also provided.
    Type: Application
    Filed: November 21, 2005
    Publication date: June 15, 2006
    Inventors: Xuebao Wang, Chiajen Lai, Nachimuthu Soundararajan, Nina Nguyen, Weiming Ying, Lori Burton, Rajesh Gandhi, Krishnaswamy Raghavan, Ronald West, Yuji Zhou, Lin Yan, Xiaotian Yin, John DiMarco, Jack Gougoutas
  • Publication number: 20060100209
    Abstract: The instant invention provides formulations of 1-(4-benzoyl-piperazin-1-yl)-2-[4-methoxy-7-(3-methyl-[1,2,4]triazol-1-yl)-1H-pyrrolo[2,3-c]pyridin-3-yl]-ethane-1,2-dione; processes for the production of such formulations; and methods of treating HIV or AIDS with such crystalline materials or such formulations.
    Type: Application
    Filed: November 4, 2005
    Publication date: May 11, 2006
    Inventors: Chong-Hui Gu, Qi Gao, Shan-Ming Kuang, Chiajen Lai, Jaquan Levons, Feng Qian
  • Publication number: 20040208924
    Abstract: The invention is directed toward a tablet containing an unusually high percentage of an active ingredient in proportion to exipients.
    Type: Application
    Filed: May 24, 2004
    Publication date: October 21, 2004
    Inventors: Omar Leopold Sprockel, Chiajen Lai, Chenkou Wei, Sanjeev H. Kothari, Robert P. Discordia, Soojin Kim
  • Publication number: 20040175419
    Abstract: The invention is directed toward a method for increasing the compactability of an active ingredient by determining the crystallization parameters of the active ingredient that affect compactability; and controlling the crystallization parameters to achieve increased compactability.
    Type: Application
    Filed: April 19, 2004
    Publication date: September 9, 2004
    Inventors: Omar Leopold Sprockel, Chiajen Lai, Robert P Discordia, Chenkou Wei, Sanjeev H Kothari, Soojin Kim
  • Publication number: 20040138439
    Abstract: Method for the production of C-aryl glucoside SGLT2 inhibitors useful for the treatment of diabetes and related diseases. and intermediates thereof. The C-aryl glucosides may be complexed with amino acid complex forming reagents.
    Type: Application
    Filed: December 23, 2003
    Publication date: July 15, 2004
    Inventors: Prashant P. Deshpande, Bruce A. Ellsworth, Janak Singh, Theodor W. Denzel, Chiajen Lai, Gerard Crispino, Michael E. Randazzo, Jack Z. Gougoutas