Patents by Inventor Ptabhu Narain CHAKRAWAL

Ptabhu Narain CHAKRAWAL 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).

  • Morphology modified heterophase propylene copolymers and their products thereof
    Patent number: 11286317
    Abstract: The present invention provides a morphology modified heterophase polymer having No-Break impact strength in the range of 500 J/m-700 J/m as per ASTM standard D256, a high melt flow index in the range of 100 g/10 min as per ASTM D1238, and a balanced flexural modulus as per ASTM standard D790. More particularly, the present invention relates to a process for the modification of morphology of heterophase propylene polymer in the presence of an initiator in the form of organic peroxide and a multifunctional unsaturated organic vinyl compound on the ex-reactor Heterophase Propylene Copolymer powder and/or pellet using special extrusion device.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: March 29, 2022
    Assignee: Indian Oil Corporation Limited
    Inventors: Vimal Kakkarakkal Kottiyath, Saranya Sethuramalingam, Naresh Shiva, Jatinder Dhaliwal Singh, Vishal Goel, Ptabhu Narain Chakrawal, Abhilasha Mishra, Shashikant, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
  • MORPHOLOGY MODIFIED HETEROPHASE PROPYLENE COPOLYMERS AND THEIR PRODUCTS THEREOF
    Publication number: 20200325256
    Abstract: The present invention provides a morphology modified heterophase polymer having No-Break impact strength in the range of 500 J/m-700 J/m as per ASTM standard D256, a high melt flow index in the range of 100 g/10 min as per ASTM D1238, and a balanced flexural modulus as per ASTM standard D790. More particularly, the present invention relates to a process for the modification of morphology of heterophase propylene polymer in the presence of an initiator in the form of organic peroxide and a multifunctional unsaturated organic vinyl compound on the ex-reactor Heterophase Propylene Copolymer powder and/or pellet using special extrusion device.
    Type: Application
    Filed: February 26, 2020
    Publication date: October 15, 2020
    Inventors: Vimal Kakkarakkal KOTTIYATH, Saranya SETHURAMALINGAM, Naresh SHIVA, Jatinder Dhaliwal SINGH, Vishal GOEL, Ptabhu Narain CHAKRAWAL, Abhilasha MISHRA, Shashikant, Gurpreet Singh KAPUR, Sankara Sri Venkata RAMAKUMAR