Patents by Inventor Omaprasana Ojha

Omaprasana Ojha 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).

  • POLYISOBUTYLENE-BASED POLYURETHANES
    Publication number: 20200109232
    Abstract: An elastomeric polymer, comprising (1) a hard segment in the amount of 10% to 60% by weight of the elastomeric polymer, wherein the hard segment includes a urethane, urea or urethaneurea; and (2) a soft segment in the amount of 40% to 90% by weight of the elastomeric polymer. The soft segment comprises (a) at least 2% by weight of the soft segment of at least one polyether macrodiol, and/or at least one polycarbonate macrodiol; and (b) at least 2% by weight of the soft segment of at least one polyisobutylene macrodiol and/or diamine.
    Type: Application
    Filed: December 6, 2019
    Publication date: April 9, 2020
    Inventors: Rudolf Faust, Omaprasana Ojha
  • Polyisobutylene-based polyurethanes
    Patent number: 10513576
    Abstract: An elastomeric polymer, comprising (1) a hard segment in the amount of 10% to 60% by weight of the elastomeric polymer, wherein the hard segment includes a urethane, urea or urethaneurea; and (2) a soft segment in the amount of 40% to 90% by weight of the elastomeric polymer. The soft segment comprises (a) at least 2% by weight of the soft segment of at least one polyether macrodiol, and/or at least one polycarbonate macrodiol; and (b) at least 2% by weight of the soft segment of at least one polyisobutylene macrodiol and/or diamine.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: December 24, 2019
    Assignee: University of Masschusetts Lowell
    Inventors: Rudolf Faust, Omaprasana Ojha
  • POLYISOBUTYLENE-BASED POLYURETHANES
    Publication number: 20170137558
    Abstract: An elastomeric polymer, comprising (1) a hard segment in the amount of 10% to 60% by weight of the elastomeric polymer, wherein the hard segment includes a urethane, urea or urethaneurea; and (2) a soft segment in the amount of 40% to 90% by weight of the elastomeric polymer. The soft segment comprises (a) at least 2% by weight of the soft segment of at least one polyether macrodiol, and/or at least one polycarbonate macrodiol; and (b) at least 2% by weight of the soft segment of at least one polyisobutylene macrodiol and/or diamine.
    Type: Application
    Filed: January 27, 2017
    Publication date: May 18, 2017
    Inventors: Rudolf Faust, Omaprasana Ojha