Patents by Inventor Vilas H. Dahanukar

Vilas H. Dahanukar 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).

  • PREPARATION OF FIPAMEZOLE
    Publication number: 20120130084
    Abstract: The application relates to processes for preparing fipamezole and its pharmaceutically acceptable salts, and intermediates thereof. It also provides intermediate compounds of Formula III and Formula IV, and processes for their preparation.
    Type: Application
    Filed: January 31, 2012
    Publication date: May 24, 2012
    Applicants: DR. REDDY'S LABORATORIES, INC., DR. REDDY'S LABORATORIES LTD.
    Inventors: Ranjan Bhowmik Dipal, Lingam Yedugani, Raghavndra Rao Kamaraju, Subba Rao Jammula, Swapna Manikonda, Vilas H. Dahanukar
  • Xanthine phosphodiesterase V inhibitor polymorphs
    Patent number: 7192962
    Abstract: Crystalline polymorphs of 1-ethyl-3,7-dihydro-8-[(1R,2R) -(hydroxycyclopentyl)amino]-3-(2-hydroxyethyl)-7-[(3-bromo-4-methoxyphenyl)methyl]-1H-Purine-2,6-dione in Form 1 and Form 2, which exhibit x-ray powder diffraction profiles substantially the same as those shown in FIGS. 5 and 6, respectively, and which exhibit differential scanning calorimtery profiles substantially the same as those shown in FIGS. 2 and 4, respectively, and are represented by the formula: Pharmaceutical compositions comprising the polymorph Form 1 or 2 of Compound 13 and at least one excipient or carrier, and methods of using the polymorph Form 1 or 2 of Compound 13 to treat a variety of physiological disorders, such as erectile dysfunction.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: March 20, 2007
    Assignee: Schering Corporation
    Inventors: Vilas H. Dahanukar, Hoa N. Nguyen, Cecilia A. Orr, Funcheng Zhang, Ilia A. Zavialov, Kevin Klopfer, Jeffrey M. Skell, Albert W. Buchholz, Jr., Craig D. Boyle
  • Process for synthesis of D1 receptor antagonists
    Patent number: 6875866
    Abstract: In one embodiment, the present invention describes the synthesis of a compound of formula and intermediates therefor.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: April 5, 2005
    Assignee: Schering Corporation
    Inventors: Vilas H. Dahanukar, Jeffrey M. Eckert, Dinesh Gala, Brian Lucas, Doris P. Schumacher, Ilia Zavialov
  • Xanthine phosphodiesterase V inhibitor polymorphs
    Publication number: 20030232845
    Abstract: Crystalline polymorphs of 1-ethyl-3,7-dihydro-8-[(1R,2R)-(hydroxycyclopentyl)amino]-3-(2-hydroxyethyl)-7-[(3-bromo-4-methoxyphenyl)methyl]-1H-Purine-2,6-dione in Form 1 and Form 2, which exhibit x-ray powder diffraction profiles substantially the same as those shown in FIGS. 5 and 6, respectively, and which exhibit differential scanning calorimtery profiles substantially the same as those shown in FIGS.
    Type: Application
    Filed: May 30, 2003
    Publication date: December 18, 2003
    Applicant: SCHERING CORPORATION
    Inventors: Vilas H. Dahanukar, Hoa N. Nguyen, Cecilia A. Orr, Funcheng Zhang, Ilia A. Zavialov, Kevin Klopfer, Jeffrey M. Skell, Albert W. Buchholz, Craig D. Boyle
  • Process for synthesis of D1 receptor antagonists
    Publication number: 20030199690
    Abstract: In one embodiment, the present invention describes the synthesis of a compound of formula 1
    Type: Application
    Filed: February 19, 2003
    Publication date: October 23, 2003
    Applicant: Schering Corporation
    Inventors: Vilas H. Dahanukar, Jeffrey M. Eckert, Dinesh Gala, Brian Lucas, Doris P. Schumacher, Ilia Zavialov