Patents by Inventor Yashbir Singh

Yashbir Singh 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 isosulfan blue
    Patent number: 10501629
    Abstract: The present invention relates to process for preparation of Isosulfan blue (Formula I) substantially free from desethyl impurity.
    Type: Grant
    Filed: October 1, 2016
    Date of Patent: December 10, 2019
    Assignee: DISHMAN CARBOGEN AMCIS LIMITED
    Inventors: Janmejay Rajnikant Vyas, Yashbir Singh, Chiragkumar Chandrakantbhai Patel, Sandip Babanrao Pawar, Himani Dhotre, K. Narasimha Sarma, Dilip N. Patel, Renish Ghetiya, Babulal R. Patel, Sarika P. Deshmukh, Girish Mavada
  • AN IMPROVED PROCESS FOR THE PREPARATION OF ISOSULFAN BLUE
    Publication number: 20190010330
    Abstract: The present invention relates to process for preparation of Isosulfan blue (Formula I) substantially free from desethyl impurity.
    Type: Application
    Filed: October 1, 2016
    Publication date: January 10, 2019
    Applicant: DISHMAN PHARMACEUTICALS AND CHEMICALS LIMITED
    Inventors: Janmejay Rajnikant Vyas, Yashbir Singh, Chiragkumar Chandrakantbhai Patel, Sandip Babanrao Pawar, Himani Dhotre, K. Narasimha Sarma, Dilip N. Patel, Renish Ghetiya, Babulal R. Patel, Sarika P. Deshmukh, Girish Mavada
  • Process for producing 2,3-diamino-6-methoxypyridine
    Patent number: 7256295
    Abstract: The present invention relates to a novel process for producing 2,3-diamino-6-methxoypyridine. The process comprises neutralizing 2,3-diamino-6-methoxy pyridine dihydrochloride, which, in turn, is prepared by the reduction of 2-amino-6-methoxy-3-nitropyridine. The 2-amino-6-methoxy-3-nitropyridine is further prepared by methoxylation of 2-amino-6-chloro-3-nitropyridine by sodium methoxide in methanol.
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: August 14, 2007
    Assignee: Jubilant Organosys Limited
    Inventors: D. B. Thakare, Yashbir Singh, Ashutosh Agarwal
  • Process for producing 2,3-diamino-6-methoxypyridine
    Publication number: 20060080790
    Abstract: The present invention relates to a novel process for producing 2,3-diamino-6-methxoypyridine. The process comprises neutralizing 2,3-diamino-6-methoxy pyridine dihydrochloride, which, in turn, is prepared by the reduction of 2-amino-6-methoxy-3-nitropyridine. The 2-amino-6-methoxy-3-nitropyridine is further prepared by methoxylation of 2-amino-6-chloro-3-nitropyridine by sodium methoxide in methanol.
    Type: Application
    Filed: August 3, 2005
    Publication date: April 20, 2006
    Applicant: JUBILANT ORGANOSYS LIMITED
    Inventors: D.B. Thakare, Yashbir Singh, Ashutosh Agarwal