Patents by Inventor Virendra K. Tiwari

Virendra K. Tiwari 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).

  • Slit film tape compositions
    Patent number: 11492474
    Abstract: In an embodiment, a slit film tape composition includes a propylene-based elastomer comprising 1-16 wt % ethylene based on a total weight of the propylene-based elastomer, the propylene-based elastomer having a melt flow rate (MFR) of 1-50 g/10 min; a polypropylene comprising 10-100 mol % propylene based on a total weight of the polypropylene, the polypropylene having a MFR of 2-35 g/10 min; and a filler. In another embodiment, a slit film tape composition includes a propylene-based elastomer comprising from 5-30 wt % ethylene based on a total weight of the propylene-based elastomer, the propylene-based elastomer having a MFR of 35-60 g/10 min; a polypropylene comprising 10-100 mol % propylene based on a total weight of the polypropylene, the polypropylene having a MFR of 2-35 g/10 min; and a filler.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: November 8, 2022
    Assignee: EXXONMOBIL CHEMICALS PATENTS INC.
    Inventors: Kaushik Das, Nilesh C. Shah, Saifudin M. Abubakar, Saurabh C. Sharma, Virendra K. Tiwari
  • Slit Film Tape Compositions
    Publication number: 20200207962
    Abstract: In an embodiment, a slit film tape composition includes a propylene-based elastomer comprising 1-16 wt % ethylene based on a total weight of the propylene-based elastomer, the propylene-based elastomer having a melt flow rate (MFR) of 1-50 g/10 min; a polypropylene comprising 10-100 mol % propylene based on a total weight of the polypropylene, the polypropylene having a MFR of 2-35 g/10 min; and a filler. In another embodiment, a slit film tape composition includes a propylene-based elastomer comprising from 5-30 wt % ethylene based on a total weight of the propylene-based elastomer, the propylene-based elastomer having a MFR of 35-60 g/10 min; a polypropylene comprising 10-100 mol % propylene based on a total weight of the polypropylene, the polypropylene having a MFR of 2-35 g/10 min; and a filler.
    Type: Application
    Filed: November 13, 2019
    Publication date: July 2, 2020
    Inventors: Kaushik Das, Nilesh C. Shah, Saifudin M. Abubakar, Saurabh C. Sharma, Virendra K. Tiwari
  • Compositions comprising EPDM and a polyolefin elastomer, preparation and use thereof
    Patent number: 9976021
    Abstract: Provided are compositions comprising: (a) an ethylene-propylene-diene terpolymer having a Mooney viscosity [ML(1+4) 125° C.] of about 25 to about 300 and an ethylene content of at least about 60 wt % of the ethylene-propylene-diene terpolymer; and (b) a polyolefin elastomer. The presence of the polyolefin elastomer improves rheological properties of the composition to an extent that does not significantly compromise other properties, such as tensile strength at break and compression set.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: May 22, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Liang Li, Milind B. Joshi, Jian Shen, Eric P. Jourdain, Virendra K. Tiwari, Jun Tong, Pradeep P. Patki
  • Compositions Comprising EPDM and a Polyolefin Elastomer, Preparation and Use Thereof
    Publication number: 20150056392
    Abstract: Provided are compositions comprising: (a) an ethylene-propylene-diene terpolymer having a Mooney viscosity [ML(1+4) 125° C.] of about 25 to about 300 and an ethylene content of at least about 60 wt % of the ethylene-propylene-diene terpolymer; and (b) a polyolefin elastomer. The presence of the polyolefin elastomer improves rheological properties of the composition to an extent that does not significantly compromise other properties, such as tensile strength at break and compression set.
    Type: Application
    Filed: March 9, 2012
    Publication date: February 26, 2015
    Applicant: Exxon Mobil Chemical Patents Inc.
    Inventors: Liang Li, Milind B. Joshi, Jian Shen, Eric P. Jourdain, Virendra K. Tiwari, Jun Tong, Pradeep P. Patki