Patents by Inventor Digvijay Singh

Digvijay 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).

  • Plant variety of Catharanthus roseus named "lli"
    Publication number: 20050251887
    Abstract: The present invention relates to the development of a unique inflorescence bearing mutant plant type lli/lli (LEAF-LESS INFLORESCENCE). Further the present invention relates to the development of a unique inflorescence bearing mutant plant type lli/lli (LEAF-LESS INFLORESCENCE) through chemical mutagenesis The present invention relates to the development of a new and distinct plant type for floricultural usage. The new type is a monogenic Mendelian recessive stable mutant plant of Catharanthus roseus with a novel leafless inflorescence architecture with increased flower frequency. This distinct plant of Catharanthus roseus was developed through chemical mutagenesis followed by salt tolerance selection.
    Type: Application
    Filed: May 4, 2004
    Publication date: November 10, 2005
    Inventors: Sushil Kumar, Shashi Rai, Sanjay Kumar, Digvijay Singh, Suchi Srivastava, Raghvendra Mishra
  • Process for isolating artemisinin from Artemisia annua
    Patent number: 6685972
    Abstract: The present invention relates to a process for the isolation of artemisinin, an antimalarial agent from the herb of the Artemisia annua plant, comprising of extracting the herb with ethanol, partitioning of the extract between water and hexane, followed by evaporative crystallization of artemisinin from hexane phase to produce substantially pure artemisinin.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: February 3, 2004
    Assignee: Council of Scientific and Industrial Research
    Inventors: Sushil Kumar, Shiv Kumar Gupta, Digvijay Singh, Madan Mohan Gupta, Dharam Chand Jain, Atul Prakash Kahol, Suman Preet Singh Khanuja, Govind Ram
  • Process for isolating artemisinin from artemisia annua
    Publication number: 20030185914
    Abstract: The present invention relates to a process for the isolation of artemisinin, an antimalarial agent from the herb of the Artemisia annua plant, comprising of extracting the herb with ethanol, partitioning of the extract between water and hexane, followed by evaporative crystallization of artemisinin from hexane phase to produce substantially pure artemisinin.
    Type: Application
    Filed: March 27, 2002
    Publication date: October 2, 2003
    Inventors: Sushil Kumar, Shiv Kumar Gupta, Digvijay Singh, Madan Mohan Gupta, Dharam Chand Jain, Atul Prakash Kahol, Suman Preet Singh Khanuja, Govind Ram