Patents by Inventor Bishwa Rai

Bishwa Rai 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 ARIPIPRAZOLE
    Publication number: 20070238876
    Abstract: The present invention provides a process for the preparation of aripiprazole of Formula I comprising condensing a carbostyril compound of Formula II wherein X is a leaving group with dichlorophenyl piperazine or its salts of Formula III wherein Y is an organic or inorganic acid in water in the presence of an organic base.
    Type: Application
    Filed: April 10, 2007
    Publication date: October 11, 2007
    Inventors: Neera Tewari, Hashim Nizar, Bishwa Rai
  • PROCESSES FOR THE PREPARATION OF CARBAPENEMS
    Publication number: 20070197781
    Abstract: The invention relates to processes for the preparation of carbapenems. More particularly, it relates to a process for the preparation of meropenem.
    Type: Application
    Filed: July 31, 2006
    Publication date: August 23, 2007
    Inventors: Neera Tewari, Avinash Mane, Bishwa Rai, Mohan Prasad
  • Sulphur-containing oils for controlling plant pathogens and stimulating nutrient uptake
    Publication number: 20070072945
    Abstract: The present invention relates to sulphur-containing oils, their preparation, and their use in controlling/killing plant pathogens and stimulating a plant's uptake of essential elements from the soil and to act as a soil pH adjuster.
    Type: Application
    Filed: March 21, 2004
    Publication date: March 29, 2007
    Inventors: Yatendra Kumar, Neera Tewari, Shailendra Singh, Bishwa Rai
  • PROCESS FOR DESILYLATION OF CARBAPENEM INTERMEDIATES
    Publication number: 20070037971
    Abstract: Provided are processes for desilylating carbapenem intermediates. In particular, such desilylation reactions are done in the presence of one or more desilylating agents selected from acetyl chloride, silica chloride, thionyl chloride, oxalyl chloride or mixtures thereof.
    Type: Application
    Filed: July 31, 2006
    Publication date: February 15, 2007
    Inventors: Hashim Nizar Meeran, Bishwa Rai, Shailendra Singh, Mohan Prasad
  • Monohydrate solvates of loracarbef
    Publication number: 20060205938
    Abstract: This invention relates to monohydrate solvates of loracarbef. The invention also relates to processes for preparing solvates of loracarbef, crystalline monohydrate of loracarbef from said solvates and pharmaceutical compositions that include the crystalline monohydrate of loracarbef.
    Type: Application
    Filed: November 21, 2003
    Publication date: September 14, 2006
    Inventors: Yatendra Kumar, Neera Tewari, Hashim Nizar Poovanathi Meeran, Bishwa Rai, Sailendra Singh
  • Process for the preparation of (z)-isomer enriched 7-amino-3-propen-1-yl-3-cephem-4-carboxylic acid
    Publication number: 20060173176
    Abstract: The invention relates to a process for enrichment of the (Z)-isomer amount in a mixture of the (Z)- and (E)-isomers of 7-amino-3-(1-propen-1-yl)-3-cephem-4-carboxylic acid.
    Type: Application
    Filed: October 8, 2003
    Publication date: August 3, 2006
    Inventors: Yatendra Kumar, Neera Tewari, Shailendra Singh, Bishwa Rai
  • Process for the preparation of cefpodoxime acid
    Publication number: 20050020561
    Abstract: The present invention relates to an improved and cost effective process for the industrial preparation of cefpodoxime acid of Formula (I) and a pharmaceutically acceptable ester thereof.
    Type: Application
    Filed: April 17, 2002
    Publication date: January 27, 2005
    Inventors: Yatendra Kumar, Neera Tewari, Ram Aryan, Bishwa Rai, Hashim Nizar
  • Process for the preparation of crystalline imipenem
    Publication number: 20050004359
    Abstract: The present invention relates to a cost effective and industrially advantageous process for the preparation of imipenem of high purity.
    Type: Application
    Filed: November 18, 2002
    Publication date: January 6, 2005
    Inventors: Bishwa Rai, Neera Tewari, Yatendra Kumar