Patents by Inventor Ajit Kumar Sarkar

Ajit Kumar Sarkar 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).

  • Reusable heat pack, method of manufacture thereof, mixture for use in a reusable heatpack and process for the preparation thereof
    Patent number: 6537309
    Abstract: The invention discloses a reusable heat pack comprising a soft sealed plastic bag containing a mixture of supercooled supersaturated recrystalizable solution of inorganic substance, alcohol, chemical compound additives, and means to trigger recrystallization of supercooled supersaturated recrystalizable solution of inorganic substance.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: March 25, 2003
    Assignee: Council of Scientific and Industrial Research
    Inventors: Chattrapal Sharma, Rajendra Kumar Sharma, Chandra Kant, Ajit Kumar Sarkar
  • Reusable heat pack, method of manufacture thereof, mixture for use in a reusable heatpack and process for the preparation thereof
    Publication number: 20020177886
    Abstract: The invention discloses a reusable heat pack comprising a soft sealed plastic bag containing a mixture of supercooled supersaturated recrystalizable solution of inorganic substance, alcohol, chemical compound additives, and means to trigger recrystallization of supercooled supersaturated recrystalizable solution of inorganic substance.
    Type: Application
    Filed: March 26, 2001
    Publication date: November 28, 2002
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Chattrapal Sharma, Rajendra Kumar Sharma, Chandra Kant, Ajit Kumar Sarkar