Patents by Inventor Chandiran Thakashinamoorthy

Chandiran Thakashinamoorthy 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).

  • Process for the manufacture of Isradipine
    Patent number: 7329756
    Abstract: The present invention relates to an improved method for the manufacture of Isradipine, 4-(4-Benzofurazanyl)-1,4-dihydro-2,6-dimethyl-3,5-pyridinedicarboxylic acid methyl 1-methylethyl ester. Which, involves reacting 2,1,3-benzoxadiazole-4-carboxaldehyde with methyl acetoacetate in the presence of acetic acid and piperidine in diisopropyl ether. To obtain the product 2-acetyl-3-benzofurazan-4-yl-acrylic acid methyl ester which is then reacted with isopropyl-?-aminocrotonate in ethanol at 25 to 35° C. to obtain the product.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: February 12, 2008
    Assignee: Shasun Chemicals and Drugs Limited
    Inventors: Chandiran Thakashinamoorthy, Minor Kumar Senthil, Kaliyaperumal Palanivel, Radhakrishnan Selvaraju Mullaiyur
  • Process For Making Form I Of Olanzapine
    Publication number: 20080009481
    Abstract: This invention discloses a new dihydrate polymorph of Olanzapine (hereinafter referred to as “dihydrate C”), and process for recovering anhydrous Form I of Olanzapine from this novel Dihydrate C.
    Type: Application
    Filed: July 13, 2005
    Publication date: January 10, 2008
    Applicant: SHASUN CHEMICALS AND DRUGS LIMITED
    Inventors: Chandiran Thakashinamoorthy, Devarajan Krishnan, Saravanan Govindaraju, Shobana Jothi
  • Process for the manufacture of isradipine
    Publication number: 20060167063
    Abstract: The present invention relates to an improved method for the manufacture of Isradipine, 4-(4-Benzofurazanyl)-1,4-dihydro-2,6-dimethyl-3,5-pyridinedicarboxylic acid methyl 1-methylethyl ester. which, involves reacting 2,1,3-benzoxadiazole-4-carboxaldehyde with methyl acetoacetate in the presence of acetic acid and piperidine in diisopropyl ether. To obtain the product 2-acetyl-3-benzofurazan-4-yl-acrylic acid methyl ester which is then reacted with isopropyl-?-aminocrotonate in ethanol at 25 to 35° C. to obtain the product.
    Type: Application
    Filed: July 15, 2004
    Publication date: July 27, 2006
    Inventors: Chandiran Thakashinamoorthy, Kumar Senthil, Kaliyaperumal Palanivel, Radhakrishnan Mullaiyur