Patents by Inventor Ramesh Kumar Selvasankar

Ramesh Kumar Selvasankar 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).

  • PRODUCTION OF POLYPROPYLENE WITH LOW VOLATILES
    Publication number: 20230331881
    Abstract: Process for producing a polypropylene comprising the steps of polymerizing the polypropylene in the presence of a metallocene catalyst, visbreaking said polypropylene and subsequently aerating the polypropylene at elevated temperature.
    Type: Application
    Filed: June 14, 2021
    Publication date: October 19, 2023
    Inventors: Jingbo Wang, Markus Gahleitner, Klaus Bernreitner, Pauli Leskinen, Georg Grestenberger, Ramesh Kumar Selvasankar
  • Extruder screw
    Patent number: 9827692
    Abstract: A double-screw extruder for thermoplastic materials, with a first and a second extruder screw, whereby the extruder screws have an inlet and an outlet and a core, helically extending screw flights being arranged through the core from the inlet to the outlet, so that the screw peaks and valleys are circumferential, and the peaks of the first screw penetrate into the valleys of the second screw, and vice versa. The screw flights may have a geometry which is step-shaped in cross section, whereby the steps may be provided such that the stepped course of the peaks is congruent with the stepped course of the valleys.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: November 28, 2017
    Assignee: BATTENFELD-CINCINNATI AUSTRIA GMBH
    Inventor: Ramesh Kumar Selvasankar
  • EXTRUDER SCREW
    Publication number: 20160089814
    Abstract: A double-screw extruder for thermoplastic materials, with a first and a second extruder screw, whereby the extruder screws have an inlet and an outlet and a core, helically extending screw flights being arranged through the core from the inlet to the outlet, so that the screw peaks and valleys are circumferential, and the peaks of the first screw penetrate into the valleys of the second screw, and vice versa. The screw flights may have a geometry which is step-shaped in cross section, whereby the steps may be provided such that the stepped course of the peaks is congruent with the stepped course of the valleys.
    Type: Application
    Filed: September 28, 2015
    Publication date: March 31, 2016
    Inventor: Ramesh Kumar Selvasankar