Patents by Inventor Ajit Singh Gujral

Ajit Singh Gujral 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).

  • Efficient process for the synthesis of 2-[2-(1-chlorocyclopropyl)-3-(2-chlorophenyl)-2-hydroxypropyl]-2,4-dihydro-3H-1,2,4-triazole-3-thione(prothioconazole) and its intermediates
    Patent number: 11292775
    Abstract: The present invention relates to an improved and efficient process for the synthesis of 2-[2-(1-chlorocyclopropyl)-3-(2-chlorophenyl)-2-hydroxypropyl]-2,4-dihydro-3H-1,2,4-triazole-3-thione, compound of formula (I) (Prothioconazole). The present invention more particularly relates to an improved process for manufacturing of 2-(1-chloro-cycloprop-1-yl)-3-(2-chloro phenyl)-2-hydroxy propyl-1-hydrazine (compound of formula III) and 2-[2-(1-chlorocyclopropyl)-3-(2-chlorophenyl)-2-hydroxypropyl]-1,2,4-triazolidine-3-thione (compound of formula II) which are mainly used for synthesis of Prothioconazole which is knows as an active compound with microbicidal fungicidal properties.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: April 5, 2022
    Assignee: GSP CROP SCIENCE PVT. LTD.
    Inventors: Subhash Rajaram Kadam, Nilesh Jani, Ravindra Shinde, Kenal V. Shah, Bhavesh V. Shah, Ajit Singh Gujral, Ganganarasaiah Byregowda, Ganadi Sivaiah, Jivan Dhanraj Pawar, Hari Narayan Pati
  • Process for the preparation of Pyraclostrobin
    Patent number: 11242320
    Abstract: The present invention relates to a novel and improved process for preparation of methyl [2-({[1-(4-chlorophenyl)-1H-pyrazol-3-yl]oxy}methyl)phenyl]methoxycarbamate (Pyraclostrobin) of formula (I) in free form or in agrochemically acceptable salt form useful as a pest control agent starting from methyl [2-({[1-(4-chlorophenyl)-1-H-pyrazol-3-yl]oxy}methyl)phenyl]hydroxycarbamatein simple manner and in high purity and good yield.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: February 8, 2022
    Assignee: GSP CROP SCIENCE PVT. LTD.
    Inventors: Ajit Singh Gujral, Kenal V. Shah, Bhavesh V. Shah, Subhash Rajaram Kadam, Nilesh N. Jani, Ravindra Y. Shinde
  • IMPROVED AND EFFICIENT PROCESS FOR THE SYNTHESIS OF 2-[2-(1-CHLOROCYCLOPROPYL)-3-(2-CHLOROPHENYL)-2-HYDROXYPROPYL]-2,4-DIHYDRO-3H-1,2,4-TRIAZOLE-3-THIONE(PROTHIOCONAZOLE) AND ITS INTERMEDIATES
    Publication number: 20200369627
    Abstract: The present invention relates to an improved and efficient process for the synthesis of 2-[2-(1-chlorocyclopropyl)-3-(2-chlorophenyl)-2-hydroxypropyl]-2,4-dihydro-3H-1,2,4-triazole-3-thione, compound of formula (I) (Prothioconazole). The present invention more particularly relates to an improved process for manufacturing of 2-(1-chloro-cycloprop-1-yl)-3-(2-chloro phenyl)-2-hydroxy propyl-1-hydrazine (compound of formula III) and 2-[2-(1-chlorocyclopropyl)-3-(2-chlorophenyl)-2-hydroxypropyl]-1,2,4-triazolidine-3-thione (compound of formula II) which are mainly used for synthesis of Prothioconazole which is knows as an active compound with microbicidal fungicidal properties.
    Type: Application
    Filed: December 20, 2018
    Publication date: November 26, 2020
    Applicant: GSP CROP SCIENCE PVT. LTD.
    Inventors: Subhash Rajaram Kadam, Nilesh Jani, Ravindra Shinde, Kenal V. Shah, Bhavesh V. Shah, Ajit Singh Gujral, Ganganarasaiah Byregowda, Ganadi Sivaiah, Jivan Dhanraj Pawar, Hari Narayan Pati
  • IMPROVED PROCESS FOR THE PREPARATION OF PYRACLOSTROBIN
    Publication number: 20200354322
    Abstract: The present invention relates to a novel and improved process for preparation of methyl [2-({[1-(4-chlorophenyl)-1H-pyrazol-3-yl]oxy}methyl)phenyl]methoxycarbamate (Pyraclostrobin) of formula (I) in free form or in agrochemically acceptable salt form useful as a pest control agent starting from methyl [2-({[1-(4-chlorophenyl)-1-H-pyrazol-3-yl]oxy}methyl)phenyl]hydroxycarbamatein simple manner and in high purity and good yield.
    Type: Application
    Filed: January 16, 2019
    Publication date: November 12, 2020
    Inventors: Ajit Singh Gujral, Kenal V. Shah, Bhavesh V. Shah, Subhash Rajaram Kadam, Nilesh N. Jani, Ravindra Y. Shinde