Patents by Inventor ANKUR S. VAID

ANKUR S. VAID 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 isolation of romidepsin from fermentation broth and preparation of crystals of romidepsin
    Patent number: 10294276
    Abstract: The present invention describes a process for isolation of romidepsin from fermentation broth and preparation of crystals of romidepsin. The process of the invention includes fewer purification steps and provides romidepsin having purity of greater than 99.5% area by HPLC. The process of the invention involves simple purification steps and hence, does not require multiple chromatographic purification steps to achieve desired quality of romidepsin. The process is advantageous over reported processes in terms of 99.5% pure yield, fast process, less expensive and less cumbersome as multiple chromatographic purification is not necessary to achieve desired quality. The process for the preparation of crystals of romidepsin provides advantages like simple steps and involves use of single solvent. The process is advantageous in terms of time, cost, and simplicity.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: May 21, 2019
    Assignee: Concord Biotech Limited
    Inventors: Ankur S. Vaid, Anand M. Dhiman, Traunkant P. Sharma
  • A PROCESS FOR ISOLATION PF ROMIDEPSIN FROM FERMENTATION BROTH AND PREPARATION OF CRYSTALS OF ROMIDEPSIN
    Publication number: 20170073374
    Abstract: The present invention describes a process for isolation of romidepsin from fermentation broth and preparation of crystals of romidepsin. The process of the invention includes fewer purification steps and provides romidepsin having purity of greater than 99.5% area by HPLC. The process of the invention involves simple purification steps and hence, does not require multiple chromatographic purification steps to achieve desired quality of romidepsin. The process is advantageous over reported processes in terms of 99.5% pure yield, fast process, less expensive and less cumbersome as multiple chromatographic purification is not necessary to achieve desired quality. The process for the preparation of crystals of romidepsin provides advantages like simple steps and involves use of single solvent. The process is advantageous in terms of time, cost, and simplicity.
    Type: Application
    Filed: March 2, 2015
    Publication date: March 16, 2017
    Applicant: CONCORD BIOTECH LIMITED
    Inventors: ANKUR S. VAID, Anand M. DHIMAN, Traunkant P. SHARMA