Patents by Inventor Bimal Srivastava

Bimal Srivastava 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).

  • Method for manufacture of compounds related to the class of substituted sulfonyl urea anti-diabetics
    Publication number: 20070255056
    Abstract: The present invention relates to a process for preparation of sulfonyl urea compounds in high conversion rates and purity. More specifically, this invention relates to a process for manufacture of sulfonyl urea class of anti-diabetic pharmaceutical drugs in higher purity and yield. The process may effectively and economically be used to produce anti-diabetic drugs, such as glimepiride, glipizide, gliclazide, glibenclamide, glibornuride, and glisoxepide.
    Type: Application
    Filed: March 10, 2006
    Publication date: November 1, 2007
    Inventors: Ashok Kumar, Satish Soudagar, Pramil Mathur, Arpana Mathur, Dadaso Dalavi, Sanjay Gunjal, Uttamrao Sawant, Ashvini Saxena, Bimal Srivastava, Praveen Singh, Jagdish Sankla, Vijay Dhurandhare
  • Metoprolol manufacturing process
    Publication number: 20050107635
    Abstract: Metoprolol manufacturing process with optimized reaction temperatures and reactant molar ratios, to avoid the manufacture of excessive epoxide intermediates, thus avoiding the need for purification of epoxide intermediates, thus achieving higher yields and higher-purity product than that seen in the prior art teachings.
    Type: Application
    Filed: March 23, 2004
    Publication date: May 19, 2005
    Inventors: Janakraj Mehra, Ajit Choubey, Bimal Srivastava, Rajendra Porwal, Prashant Gautam