Patents by Inventor Hiteshkumar Natwarlal SUTHAR

Hiteshkumar Natwarlal SUTHAR 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 preparation of apixaban
    Patent number: 9603846
    Abstract: A crystalline Form N-1 of apixaban substantially free from one or more of: 1-(4-methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylic acid; 7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-1-phenyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide; or methyl 1-(4-methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate, relative to apixaban by area percentage of HPLC and having a mean particle size equal to or greater than 100 ?m.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: March 28, 2017
    Assignee: Cadila Healthcare Limited
    Inventors: Brij Khera, Kumar Kamlesh Singh, Santosh Devidas Diwakar, Sunil Dnyaneshwar Narode, Hiteshkumar Natwarlal Suthar
  • PROCESS FOR THE PREPARATION OF APIXABAN
    Publication number: 20160143894
    Abstract: A crystalline Form N-1 of apixaban substantially free from one or more of: 1-(4-methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylic acid; 7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-1-phenyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide; or methyl 1-(4-methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate, relative to apixaban by area percentage of HPLC and having a mean particle size equal to or greater than 100 ?m.
    Type: Application
    Filed: November 24, 2015
    Publication date: May 26, 2016
    Inventors: Brij KHERA, Kumar Kamlesh SINGH, Santosh Devidas DIWAKAR, Sunil Dnyaneshwar NARODE, Hiteshkumar Natwarlal SUTHAR